InterviewSolution
Saved Bookmarks
InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 9101. |
Kaun kaun sa chapter delete ho gya hai science me ?? |
|
Answer» Who are you Dhairya Khandelwal and how day you to talk like this??? Should i report content? (dhairya khandelwal)??? Thanks On July 7, HRD Minister Ramesh Pokhriyal announced a major CBSE syllabus reduction with 30% of the syllabus slashed for the year 2020-21 for classes 9 to 12 because of the reduction in classroom teaching time due to the Covid-19 pandemic and lockdown.Click on the link:Revised Curriculum for the Academic Year 2020-21 |
|
| 9102. |
Why do we like our sister |
|
Answer» Because they cares about us. She is your best friend Because she is the another mother for us I don\'t like them U fool we don\'t like them ?? |
|
| 9103. |
Which process is convert light energy into chemical energy |
|
Answer» Photosynthesis Photosynthesis is a process used by plants and other organisms to convert light energy, normally from the sun, into chemical energy, that can be later released to fuel the organisms\' activities. It mainly takes place in two steps, light reaction, and dark reaction. Light reaction is mainly used to produce ATP and NADPH2\u200b\xa0which is used during carbon dioxide fixation during the dark reaction. |
|
| 9104. |
Who is W.Wattson |
|
Answer» I think this question is from history ??? A person Human ?? |
|
| 9105. |
Give four examples of non-uniform circular motion. |
|
Answer» Hii Yogita IngleFan is doing rotatory motion not circular motion Thanku all of u Hello trishla Four examples of non-uniform circular motion.\tFan\xa0\ttires of a car\t\xa0 Examples of non- uniform circular motions are : Oscillation of pendulum , the motion of a train, a person jogging in the park , hour hands of a watch |
|
| 9106. |
Is force a vector or scalar quantity |
|
Answer» Vector Force is a vector quantity Force is a vector quantity Force is a vector Force is a vector quantity. |
|
| 9107. |
Which type of simple tissues |
| Answer» 1 . Name types of simple tissues .Ans .\xa0The types of simple tissues are parenchyma, collenchyma, sclerenchyma and aerenchymaParenchyma is divided into two types :\t\xa0Chlorenchyma\tAerenchyma. | |
| 9108. |
Why humans like each other of opposite gender |
|
Answer» Ask only about our school lessons. And not about something else. ? But I can\'t Think yourself and answer (only) this question yourself. Can any one answer me. ???Koi mujhe batayega??? |
|
| 9109. |
Why the 0°C is the cooling point of water and also the melting point of water???? |
|
Answer» Thank you so much for your answer The melting point and the freezing point are usually the same temperature. The melting point is the temperature at which a solid turns into a liquid, while the freezing point is the temperature at which a liquid turns into a solid. The transition of matter is same. For water, it is 0 degrees Celsius. When a block of ice is heated above 0 degrees Celsius, it melts, while a glass of water is cooled below 0 degrees Celsius it freezes. There are a few substances that have different melting and freezing points. Example, agar melts at 85 degrees Celsius but freezes between 32 and 40 degrees Celsius. That is called “hysteresis,” and it’s not very common phenomenon.\xa0 |
|
| 9110. |
What is the role of evaporation in the weather |
|
Answer» Evaporation helps to dry up our cloths after washing them . Evaporation is a heat which is less than 100° C but it changes the water into water vapour. Separating of salt from sea water is done by the process called evaporation . But that matter should be in spacious form ex, if you keep your cloths to dry so you don\'t keep is string you have to spread the cloth and keep it . Even the rain cause by evaporation because the sea water evaporates and become cloud and cloud starts condensation and it rains , as it is raining over here out of my house . It can cause rain, And other examples of evaporation are-1.after a hot sunny day, people sprinkle water on the roof because the large latent heat of vaporisation of water helps to cool the hot surface. 2.during summer, we perspire(फसिने) more because of which mechanism of our body which keeps us cool. 3.sea breeze and land breeze occur .So, plz ????try to read cbse book then you can find out more examples and understand fast???. |
|
| 9111. |
How to learn easy |
| Answer» When we understand a topic and when we concentrate on it .We can learn it,even it is that much hard. U can also take notes,teach it parents and friends because when we teach to others it registers in our mind. | |
| 9112. |
And all other subjects syllabus after reduction of 30%? |
| Answer» 70% | |
| 9113. |
Syllabus of class 9th after reduction of 30%? |
| Answer» | |
| 9114. |
Name the technique to separate butter from curd |
|
Answer» The process by which we have to separate butter from curd is called centrifugation By the process of centrifugation Centrifugation Butter is separated from curd through the process of Centrifugation. |
|
| 9115. |
What are the functions of eosinophil and basophils?? |
| Answer» Neutrophils: This is the largest group of\xa0white blood cells\xa0in your\xa0body. They help fight infections. Eosinophils: These help cells combat parasite infections. Like basophils and mast cells, they play a role in allergic reactions, asthma, and fighting parasite pathogens. | |
| 9116. |
When will next exam held? |
| Answer» After lockdowns | |
| 9117. |
What is the formula for displacement |
|
Answer» Distance is the total movement of an object without any regard to direction. We can define distance as to how much ground an object has covered despite its starting or ending point.Distance FormulaΔd = d1\xa0+ d2 Velocity multiple by time |
|
| 9118. |
To take biology which job we can do |
|
Answer» Medical ok |
|
| 9119. |
What is nucleolus ? |
|
Answer» Nucleolus :- A small body in the nucleus of a cell that contains protein and RNA and is the site for the synthesis of ribosomal RNA and for the formation of ribosomal subunits. Nucleolus are the component present in nucleus |
|
| 9120. |
Why animals color is different from our colur |
| Answer» Some animals are colored for physical protection, with pigments in the skin to protect against sunburn, while some frogs can lighten or darken their skin for temperature regulation. Finally, animals can be colored incidentally. For example, blood is red because the heme pigment needed to carry oxygen is red. Animals colored in these ways can have striking natural patterns.Animals produce color in both direct and indirect ways. Direct production occurs through the presence of visible colored cells known as pigment which are particles of colored material such as freckles. Indirect production occurs by virtue of cells known as chromatophores which are pigment-containing cells such as hair follicles. The distribution of the pigment particles in the chromatophores can change under hormonal or neuronal control. For fishes it has been demonstrated that chromatophores may respond directly to environmental stimuli like visible light, UV-radiation, temperature, pH, chemicals, etc. | |
| 9121. |
Derive the mathematical relation of Newton\'s second law of motion |
|
Answer» At what height the surface of earth does the acceleration a due to gravity become zero Let us consider an object of mass m, moving along a straight line with an initial velocity u. Let us say, after a certain time t, with a constant acceleration, the final velocity becomes v.Here we see that, the initial momentum(P1)=m*uThe final momentum(P2)=m*vThe change in momentum can be written as(P2-P1)=(m*v)-(m*u)=m(v-u)As we know, the rate of change of\xa0momentum\xa0with respect to time is proportional to the applied force. The applied forceF=m*a. |
|
| 9122. |
What are neutrons |
| Answer» Neutron, neutral\xa0subatomic particlethat is a\xa0constituent\xa0of every atomic nucleus except ordinary\xa0hydrogen. It has no\xa0electric charge\xa0and a rest\xa0mass\xa0equal to 1.67493 × 10−27\xa0kg—marginally greater than that of the\xa0proton\xa0but nearly 1,839 times greater than that of the\xa0electron. | |
| 9123. |
What is turgid |
| Answer» In biology, turgid refers to cells or tissues that are swollen from water uptake. Turgidity is the state of being swollen or turgid, especially due to high fluid content. Turgidity is a cellular state in which a plant cell, having absorbed water, is in a state of tension. A turgid plant cell is a plant cell that has been filled with water as a result of osmosis.\xa0 | |
| 9124. |
Can anyone tell me a short summary of Atoms and molecules?Plz..... |
|
Answer» Thanks Dwanish shetty Tendulkar Molecules: A group of two or more than two atoms of the same or different elements that are chemically bonded together is called a molecule. For example: Two atoms of hydrogen (H2) and one atom of oxygen (O2) react with each other and form one molecule of water. |
|
| 9125. |
Define 1 Walt of power. |
|
Answer» Volt is the electrical unit of voltage or potential difference (symbol: V). One Volt is defined as energy consumption of one joule per electric charge of one coulomb. 1 watt power\xa0is\xa0defined\xa0as the\xa0power\xa0produced when\xa01\xa0Joule of work is done for\xa01\xa0second. |
|
| 9126. |
Define animal. Husbandry |
|
Answer» The branch of agriculture that focuses upon the proper feeding, shelter, health and breeding of the domestic animals is called animal husbandry.To meet the growing the demand for food (milk, egg, meat, fish) with the growing population animal husbandry is necessary. Animal husbandry is a state of work to manage animals in a large amount or scale....It is also known as science of breeding animals..... |
|
| 9127. |
What is glandular epithelium? |
|
Answer» Glandular Epithelium –\xa0These are modified columnar epithelial tissues. They are large cells that present in the tear glands, sweat glands etc. Their main\xa0function\xa0is secretion. A single cell or group of cells that produce and secrete specific products (e.g.-mucin).Glandular epithelium can be endocrine or exocrine. |
|
| 9128. |
Is milk a colloid, suspension or solution ? |
|
Answer» Milk is a collide Milk is a colloid solution Milk is collide solution, through which beam of light can pass easily Unhomogenized milk is a suspension because its fat(cream) separate from rest of the milk What is question |
|
| 9129. |
Is cytosol similar to vacuoles? |
| Answer» Yes, we can say that cytosol similar to vacuoles as they both perform the function of storage | |
| 9130. |
Phle egg aaya..ya hen?????? |
|
Answer» This is the most difficult question ?? But interpreted literally, the answer to the riddle is clear. Dinosaurs were forming bird-like nests and laying bird-like eggs long before birds (including chickens) evolved from dinosaurs. "The egg came before the chicken," Zelenitsky said. "Chickens evolved well after the meat-eating dinosaurs that laid these eggs." Kese?????? Hen |
|
| 9131. |
What is a main difference between acid and base |
| Answer» \tBasisAcidBaseDefinitionAn acid is any chemical compound once dissolved in water produces a solution with hydrogen ion activity more than purified waterA base is an aqueous substance that could absorb hydrogen ions.StrengthRelies on the concentration of the hydronium ionsRelies on the concentration of the hydroxide ionsExamplesAcetic acid CH3COOH and\xa0sulphuric acidSodium Hydroxide (NaOH) and AmmoniaCharacteristics (Physical)Would depend upon the temperature acids would look solid, liquid or in the form of gas. It would also have a sour taste.Bases would feel slippery and solid in nature (except for ammonia, which is gaseous). It would have a bitter taste.DisassociationAcids would release hydrogen ions (h+) when mixed with waterBases would release hydroxide ions(OH-) when mixed with waterTest with LitmusWould turn litmus paper redWould turn litmus paper blue\t | |
| 9132. |
What is the SI unit of resistence |
|
Answer» Ohm Ohm Ohm D SI unit of resistance\xa0is\xa0Ohm\xa0(Ω) |
|
| 9133. |
Solve all the numericals of motion ch 8 more briefly of science.... |
| Answer» | |
| 9134. |
What is the formula for potassium permagnate? |
|
Answer» Potassium permanganate/FormulaKMnO₄ The chemical\xa0formula\xa0of\xa0potassium permanganate\xa0is KMnO4. |
|
| 9135. |
How to separate dye from red ink |
|
Answer» Chromatography In textbook it is in activity Dyes are seperated by the process called\xa0column chromatography.Steps-\tpacking of column with adsorbing substance like sillica gel etc\tWetting of column using suitable solvent\trunning of mixture across the column\trunning if same solvent used earlier\tcollection of the seperate components. By chromotography the dye from red ink can be separated. We can spreate by chromotography |
|
| 9136. |
Sodium chloride from its solution in water |
| Answer» With eveproration sepreat sodium chloride from its solution in water | |
| 9137. |
A battery lights bulb.Describe the energy change involves in process. |
| Answer» When a\xa0battery lights\xa0a\xa0bulb, first\xa0energy\xa0transformation takes place in the\xa0battery\xa0and then in the\xa0bulb. In the\xa0battery, the chemical\xa0energy\xa0gets converted into electrical\xa0energy. In the\xa0bulb, the electrical\xa0energy\xa0from the\xa0bulb\xa0gets converted into heat\xa0energy\xa0and then into\xa0light energy. | |
| 9138. |
Find g value And explain how |
| Answer» To calculate the value of g, we should put the values of G, M and R in Eq. (9), namely, universal gravitational constant,G = 6.7 × 10–11\xa0N m2\xa0kg-2, mass of the earth,M = 6 × 1024\xa0kg, and radius of the earth,R = 6.4 × 106\xa0m.\xa0g=G M/R2 6.7 10-11\xa0N m2\xa0kg-2\xa06 1024\xa0kg / (6.4 106\xa0m)2 = 9.8 m s–2.Thus, the value of acceleration due to gravity of the earth, g = 9.8 m s–2. | |
| 9139. |
What to mean inversely and directly proportional |
|
Answer» Inverse proportion is the relationship between two variables when their product is equal to a constant value. When the value of one variable increases, the other decreases, so their product is unchanged.y is inversely proportional to x when the equation takes the form:y = k/xorxy = kwhere k is a constantIn contrast, directly proportional variables increase or decrease with each other.Inversely Proportional ExamplesSpeed and travel time are inversely proportional. The faster you go, the less time it takes to complete your trip.The\xa0volume\xa0of an\xa0ideal gas\xa0is inversely proportional to the\xa0pressure\xa0of the gas (Boyle\'s Law) 2. Direct proportion is the relationship between two variables when their ratio is equal to a constant value.Examples:The\xa0volume\xa0of an\xa0ideal gas\xa0is directly proportional to the\xa0absolute temperature\xa0of the gas (Charles\' Law)If you get paid by the hour, the more you work the more you will get paid. If you earn $15/hour and work 2 hours, you will earn $30 (Not including taxes, etc.) and if you work 4 hours, you will earn $60. The ratio of money earned to hours worked is 15 to 1 or $15/hour Inversely means that when any objects value increases then other object\'s value decreasesEXAMPLE- to go to any distance if our speed is high or fast then our time will decrease means it will take less time to reach our destinationDirectly means when any object\'s value increases then other object\'s value also increasesEXAMPLE- to travel any distance if our speed is fast then we will reach the distance faster.Over here when the speed fasten then our distance gap also gets faster to cover.Hope this would help ?? |
|
| 9140. |
What are the components of cell biology class 9 |
|
Answer» Cell is generally composed of three basic components:(i) Cell wall and cell membraneCell Wall is found in plant cells outside the plasma membrane.It is a rigid covering made up of cellulose which a complex substance is providing structural support to the plants.The contents of the cell wall contracts during loss of water in plant cells by the process of osmosis.Due to the presence of cell wall plant cells can withstand greater changes in the surrounding media due to the exertion of equal pressure to the cell when it swells up by taking up water through osmosis in a hypnotic media.(ii) NucleusThe nucleus is small, round and membrane bound structure found in cell.The fluid inside the nucleus surrounded by nuclear membrane is called nucleoplasm.It controls the cell’s growth and reproduction because it contains cell\'s hereditary information.It is covered by dual layer called nuclear membrane.The nuclear membrane contains pores due to which materials can travel both inside the nucleus from its outer surrounding i.e. cytoplasm.(iii) CytoplasmA thick solution composed of water, salts, and proteins that fills the cell is called cytoplasm.It is surrounded by cell membrane.The nucleus of the cell is surrounded by the cytoplasm Cell is generally composed of three basic components:(i) Cell wall and cell membrane\tCell Wall is found in plant cells outside the plasma membrane.\tIt is a rigid covering made up of cellulose which a complex substance is providing structural support to the plants.\tThe contents of the cell wall contracts during loss of water in plant cells by the process of osmosis.\tDue to the presence of cell wall plant cells can withstand greater changes in the surrounding media due to the exertion of equal pressure to the cell when it swells up by taking up water through osmosis in a hypnotic media.(ii) Nucleus\tThe nucleus is small, round and membrane bound structure found in cell.\tThe fluid inside the nucleus surrounded by nuclear membrane is called nucleoplasm.\tIt controls the cell’s growth and reproduction because it contains cell\'s hereditary information.\tIt is covered by dual layer called nuclear membrane.\tThe nuclear membrane contains pores due to which materials can travel both inside the nucleus from its outer surrounding i.e. cytoplasm.(iii) Cytoplasm\tA thick solution composed of water, salts, and proteins that fills the cell is called cytoplasm.\tIt is surrounded by cell membrane.\tThe nucleus of the cell is surrounded by the cytoplasm |
|
| 9141. |
What is the meaning of the world |
| Answer» -------------KING----------- | |
| 9142. |
What is the function of cartilage and bone? |
| Answer» The main function of bones are:\tTo serve as storage for minerals.\tTo provide structural support.\tTo protect the internal organs of the body.CartilageIt is a thin, fibrous, flexible connective tissue, which is mainly found in the external ear, larynx, respiratory tract, and the articulating surface of the joints. These cartilages lack\xa0blood vessels; therefore, the growth and development of these tissues are slower compared to that of other tissues. | |
| 9143. |
Which animal are carnivores |
|
Answer» Lion ,tiger,cheetah are carnivorous mammals Human is the best example of all as like omnivorous. ? ? Following are some of the examples of carnivorous animals:\tCarnivorous mammals include tiger, lion, cheetah, etc.\tBlack eagle, kite, hawk are carnivorous birds.\tAlligator, crocodile, snake, komodo dragon are some of the carnivorous reptiles.\tWhale, shark, tuna are carnivorous fish. |
|
| 9144. |
How do atom exists in nature ? Explain with example. |
|
Answer» Thank you ma\'am Atoms exist\xa0in free states in the form of molecule. ... Molecules may be formed by the combination of\xa0atoms\xa0of two or more different elements. For example molecule of water. It is formed by the combination of two\xa0atoms\xa0of hydrogen and one\xa0atom\xa0of oxygen. Hope this would help?? |
|
| 9145. |
Different between sexual and asexual reproduction |
|
|
Answer» Sexual Reproduction involves two parents. Asexual Reproduction involves only one parent | \tOccurs in prokaryotic microorganisms and in some eukaryotic unicellular and multicellular organisms, lower invertebrates and plantsOccurs almost in all types of multicellular organisms including humans, animals, and higher plants.It is uniparental.It is usually bi-parental.Gametes are not formed.Gametes are formed.Somatic cells of parents are involved.Germ cells of parents are involved.No fertilization occurs.Fertilization takes place.No involvement of reproductive organs.Presence of fully developed reproductive organs.Only mitosis type of cell division occurs.Both meiosis and mitosis type of cell division occurs.The progeny and the parent are genetically identical.The progenies will be genetically different from the parents.Characteristics of only one parent are inherited.Characteristics of both parents are inherited.The genes and genetic material are just multiplied and passed on to new organisms from the parent.The genetic material undergoes intermixing from both parents to form a new set of genetic material.Multiplication is very rapid and takes less time.Multiplication is not so rapid and takes a longer time to complete.The number of offsprings produced may vary from two to many.The number of offsprings produced is comparatively lower.No evolutionary significance.Has evolutionary significance in the population.Bacterial fission, fragmentation, spore formation, budding of hydra are different types of asexual reproduction.Syngamy, external fertilization, and conjugation are different types of sexual reproduction.\t \tAsexual ReproductionSexual ReproductionInvolves reproduction through any part of the body. Male and female gametes are absent.Involves fusion of male and female gametes.It is a simple process of cell divisionThe fusion of male and female gametes forms zygote from which develops a new individual. This process is known as ‘fertilisation’.No mixing of genetic material. Hence less variation is observed.Mixing of genetic material takes place. Hence it shows great extent of variation.It is a rapid process during favourable conditions.It is a slower process.Ex: Binary fission in amoeba, budding in hydraEx: reproduction in multi-cellular organisms.\t | |
|---|---|---|
| 9146. |
Types of plant tissue |
|
Answer» There are two types of plant tissues:-1.Meristematic tissues2.Permanent tissuesPlz give me thanks as i answered your question my your parents live 100 years if you give thanks ???? Types of Plant Tissues:Based on the dividing capacity of the tissues, various plant tissues can be classified as growing or meristematic tissue and permanent tissue which have further sub-divisions as explained below:A. Meristematic Tissue\xa0Meristematic tissues are responsible for growth in plants. Cells in these tissues can divide and form new cells.Meristematic tissues are of three types:(i) Apical Meristem:\xa0It is present at the growing tip of the stem and roots and increases the length.\xa0.(ii) Lateral Meristem (cambium):\xa0It is present beneath the bark. It is responsible for growth in girth of trunk.(iii) Intercalary Meristem:\xa0It is present at internodes or base of the leaves and increases the length between the nodes.\xa0B. Permanent Tissue\tCells of meristematic tissues change their shape & size to get specialised in performing other functions in plants body. This process is called Differentiation.\tOnce the cells of meristematic tissue divide to a certain extent, they become specialized for a particular function.Permanent tissues are of two types:Simple tissues and Complex tissues(i) Simple tissues:\xa0This type of tissue is composed of same type of cells.These are again of four types:(a) Parenchyma simple tissues:\xa0Cells of parenchyma tissues are live. They are oval, elongated and loosely packed with large inter-cellular space, forming basic packing of tissue and are found throughout the plant body.Functions of parenchyma:\tThey provide mechanical support to the plant body.\tThey store food and nutrients in vacuoles.Chlorenchyma:\xa0Parenchyma with chlorophyll which performs photosynthesis is called as\xa0chlorenchyma.\xa0Aerenchyma:\xa0In aquatic plants, cells of parenchyma have large air cavities to give\xa0buoyancy to the plant and is called\xa0aerenchyma\xa0.(b) Collenchyma simple Tissues:\xa0Cells of collenchyma are live. They are oval and elongated and tighily packed with no inter-cellular spaces. They are found below epidermis in leaves and stem.Functions of collenchymas tissues:\tThey provides mechanical support to plant.\tThey also provide flexibility to plants so that they can bend without breaking.(c) Sclerenchyma Simple Tissues:\xa0Cells of sclerenchym are dead. They are narrow and elongated. The cell wall in sclerenchyma is composed of lignin which makes it hard. Sclerenchyma are found around vascular bundles, veins of leaves in hard covering of seeds and nuts. For example: Scalerenchyma tissues are found in coconut husk.Functions of sclerenchyma:\tThey help to makes parts of plant hard and stiff.\tAlso provides mechanical strength.(d) Protective tissues: They protect the plant body by forming an outer layer.There are two types of protective tissues:1. Epidermis Simple Tissues:\xa0Epidermis tissue covers the entire body of plant. They protect plant from injury, germs and water loss.Cells of epidermal tissue form a continuous layer without intercellular spaces.Stomata are small openings on epidermal layer of leaf and soft part of stem to facilitate the gaseous exchange and transperation in plants. Each stomata is composed of two guard cells which regulate the opening and closing of stomata.In desert plants, epidermis and cutin (a water proof waxy substance secreted by epidermis) are thicker to reduce loss of water due to transpiration.2. Cork Simple Tissues:\xa0These types of tissue consist dead cells with no intercellular spaces. They form the outer layer of old tree trunks.Cork cells have a chemical called suberin in their walls that makes them impervious to gases and water.Cork tissue protects plants from injuries, germs and water loss.Cork being light in weight is used for making several products like bottle stoppers and shuttle cork.(ii) Complex tissues:\xa0Group of different type of cells performing common task together are named as complex tissues.Complex tissues are of two types:(a) Xylem (b) Phloem(a) Xylem:\xa0This is the tissue that transports water and nutrients from root to upper parts of plant. It is composed of four types of cells i.e., tracheid, vessel, xylem parenchyma and xylem sclerenchyma (fibre).1.Trachieds are long elongated cells with tapered ending. Trachied cells are dead. Trachied transports water through pits.2. Vessel is a pipe like structure. Vessels are dead and have lignified thick cell wall. Upper and lower portion of cell wall is absent.3. Parenchymas are living cells. They store food and nutrients.4. Sclerenchymas (fibres) are dead cells. They provide mechanical support to plant.(b) Phloem:\xa0Phloem is the tissue that transports food from site of photosynthesis to different parts of plants.It is composed of four types of cell i.e. sieve cells, companion cells, phloem parenchyma, phloem fibre or blast fibre. Al types of cells are live except phoem fibres.1. Sieve cells are elongated and have thin cell wall. They have cytoplasm but no nucleus and other organelles. These cells are responsible for transportation of food and nutrients2. Companion cells have cytoplasm, nucleus and other organelles. They perform the tasks required for sieve cells for living.3. Phloem parenchyma store food.4. Phloem fibres have thick cell wall and they provide mechanical support to plant. Different types of plant tissues include permanent and meristematic tissues.b>Meristematic tissue:These tissues have the capability to develop by swift division. They assist in the major growth of the vegetation. Growth in length and growth in diameter of the plant is carried about by these cells. The Meristematic cells are cubical, living cells with a big nucleus. These cells are meticulously crammed with no intercellular spaces. Depending on the section where the meristematic tissues are existing, they are categorized as intercalary, lateral and apical meristems.\tApical meristem\xa0is existent at the growing tips or apical of stems and roots. Apical meristem upsurges the length of the plant.\tLateral meristem\xa0is existent in the radial portion of the stem or root. Lateral meristem upsurges the thickness of the plant.\tIntercalary meristem\xa0is found at the internodes or at the base of the leaves. Intercalary meristem upsurges the size of the internode.Permanent tissues:These cells have lost their ability to distribute but are specialised to offer elasticity, flexibility and strength to the plant. These tissues can be additionally categorised into:\tSimple Permanent Tissue: They can be classified into sclerenchyma, collenchyma and parenchyma based on their purpose.\tComplex Permanent Tissue: These tissues include phloem and xylem. Xylem is valuable for the transportation of water and solvable constituents. It is made up of xylem parenchyma, fibres, vessels and tracheids. Phloem is valuable in the transportation of food particles. Phloem consists of phloem parenchyma, phloem fibres, companion cells, sieve cells and sieve tubes. |
|
| 9147. |
Write the activity of this practical |
| Answer» Which practical | |
| 9148. |
How crystallization can give puriest form of matter |
|
Answer» Thanks The crystallization process consists of two major events,\xa0nucleation\xa0and\xa0crystal growth\xa0which are driven by thermodynamic properties as well as chemical properties. In crystallization\xa0Nucleation\xa0is the step where the solute molecules or atoms dispersed in the\xa0solvent\xa0start to gather into clusters, on the microscopic scale (elevating solute concentration in a small region), that become stable under the current operating conditions. These stable clusters constitute the nuclei. Therefore, the clusters need to reach a critical size in order to become stable nuclei. Such critical size is dictated by many different factors (temperature,\xa0supersaturation, etc.). It is at the stage of nucleation that the atoms or molecules arrange in a defined and\xa0periodic\xa0manner that defines the\xa0crystal structure\xa0— note that "crystal structure" is a special term that refers to the relative arrangement of the atoms or molecules, not the macroscopic properties of the crystal (size and shape), although those are a result of the internal crystal structure.The\xa0crystal growth\xa0is the subsequent size increase of the nuclei that succeed in achieving the critical cluster size. Crystal growth is a dynamic process occurring in equilibrium where solute molecules or atoms precipitate out of solution, and dissolve back into solution. Supersaturation is one of the driving forces of crystallization, as the solubility of a species is an equilibrium process quantified by Ksp. Depending upon the conditions, either nucleation or growth may be predominant over the other, dictating crystal size.Many compounds have the ability to crystallize with some having different crystal structures, a phenomenon called\xa0polymorphism. Certain polymorphs may be\xa0metastable, meaning that although it is not in thermodynamic equilibrium, it is kinetically stable and requires some input of energy to initiate a transformation to the equilibrium phase. Each polymorph is in fact a different thermodynamic solid state and crystal polymorphs of the same compound exhibit different physical properties, such as dissolution rate, shape (angles between facets and facet growth rates), melting point, etc. For this reason, polymorphism is of major importance in industrial manufacture of crystalline products. Additionally, crystal phases can sometimes be interconverted by varying factors such as temperature, such as in the transformation of\xa0anatase\xa0to\xa0rutile\xa0phases of\xa0titanium dioxide. |
|
| 9149. |
When the product of masses is directly and inversely proportional?? |
| Answer» The law of gravitation states that the force of attraction between any two objects is\xa0proportional\xa0to the\xa0product\xa0of their\xa0masses\xa0and\xa0inversely proportional\xa0to the square of the distance between them. | |
| 9150. |
10 examples of acceleration |
| Answer» | |