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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.
| 851. |
Difference in between guttation and diffusion!!!??? |
| Answer» Guttation means the directly removal of water from plants in the form of droplets in winter season whereas diffusion means movement of any molecule from higher concentration to lower concentration. | |
| 852. |
Define interphase ✌✌ |
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Answer» The interphase, though called the resting phase, is metabolically quite active. It is the time during which the cell prepares itself for division by undergoing both cell growth and DNA replication in an orderly manner. The interphase is further divided into three phases:• G1 (Gap 1) phase• S (Synthesis) phase• G2 (Gap 2) phase A stage in the life cycle of cell between two successive mitotic or meiotic division |
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| 853. |
Explain the process of nodule formation!!!!???? |
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Answer» The roots of leguminous plant come in contact with rhizobium it becomes curled or deform by chemical secretion by bacteria the rhizobium enter into deform root hairs and proliferate with in the roots hair the plant responds by forming an infection thread that grows inward to deliver the bacteria to the tissue the nodules established contact with the vascular tissue of the host for thr absorption of nutrients the formation of roots nodules and nitrogen fixation occur unfer the control of genes of leguminous and the gene of bacteria Your wellcome Alia ji Thanks aayushi ji ??? Nodule formation : (a) It includes the reactions between Rhizobium and roots of host plant. Rhizobia multiply, (b) They colonise the surrounding of the roots. They get attached to root epidermal hair cells,©\tA root hair curls and the bacterium invades into it. An infection thread is formed carrying it into root jcortex: (d) The bacteria are then released from the thread into cells and it causes the differentiation of N2 fixing cells. Nodule formation occurs. In general terms, nodules are formed as a result of infection of the roots by soil bacteria. ... The complex process by which plant roots are infected by rhizobia is known as infection. The complex process in which nodules are formed is known as nodulation. |
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| 854. |
explain about Mycoplasma in detail (5marks) |
| Answer» Mycoplasma is also known as molliates.It is the simplest and smallest living organism Discovered in the pleuro field of cattle suffering from pleuropnemonia .Often called MLO OR PPLO (pleuropnemonia like organism)Cell wall is absent in them.Plasma membrane forms the outer boundary of the cell. They are pleomorphic | |
| 855. |
Floral formula for lilliaceae |
| Answer» ✶ P3+3 A3+3 G(3)General floral formula of the Liliacaeae: Flowers actinomorphic and hermaphrodite with 6 undifferentiated tepals in two whorls of three, the same number and arrangement of stamens, and a superior ovary with 3 fused carpels. Individual species and genera may have more or less derived formulas. | |
| 856. |
Intercellular and Intracellular difference |
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Answer» U r most wlcm. .......?? Thank u Intercellular - relating to, involving, or occurring in the space between the cells of a multicellular organism or in the space between cells of closely associated unicellular microorganisms (such as bacteria). Intracellular -existing, occurring, or functioning within a cell Thnks yogita (i) Intracellular digestion, occurs inside the living cells with the help of lysosomal enzymes. Food particle is taken in through endocytosis. It forms a phagosome, which fuses with a lysosome. The digested material pass into the cytoplasm. The undigested matter is thrown out by exocytosis. It occurs in Amoeba, Paramecium, etc.(ii) Extracellular digestion In case of coelenterates digestion occurs in gastrovascular cavity. This cavity has gland cells which secrete digestive enzymes over the food. The partially digested fragmented food particles are ingested by nutritive cells. It occurs in Hydra, Aurelia, etc. Plz answer anyone?? |
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| 857. |
State the advantages of vegitetive propagation |
| Answer» 1. The new plants produced by artificial vegetative propagation will be exactly like the parent plants. Any desirable feature of the parent plant will be replicated in the new plants. 2. The fruit trees grown form seed may take many years before they start to bear fruit. But the fruit trees grown form cuttings or by grafting start to bear fruits much earlier. 3. The plants grown by vegetative propagation usually need less attention in their early year than the plants grown from seeds.4. Many plants can be grown from just one parent plants by artificial propagation. 5 we can also get seedless plant by artificial propagation. | |
| 858. |
Difference between dicot and monocot leaf. |
| Answer» One of their classification is as monocot and dicots. Monocots and dicots differ from each other in four structures: leaves, stems, roots and flowers. ... Another main difference in monocot and dicot leaf is that monocot leaf has an equal number of stomata on either side, but dicot has more stomata at its lower surface. | |
| 859. |
How many sphincters are present in a digestive system. What are they? |
| Answer» There are six sphincter present in a digestive system. They are -The mouth is separated from the esophagus by the upper esophageal sphincter. The division between the esophagus and the stomach is the cardiac sphincter, or lower esophageal sphincter. Dividing the lower stomach from the small intestine is the pyloric sphincter. Between the small intestine and colon is the ileocecal sphincter. The exit from the body at the **** is actually two different sphincters the internal **** sphincter, and the external **** sphincter. | |
| 860. |
Explain the theory of vital and mass flow theory.? |
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Answer» In 1815 AD, a Swedish chemist J.J. Berzelius put forward vital force theory to explain the origin of organic compound. According to this theory, organic compound are formed and synthesized only within living species( plants and animals ). ... This theory defied the vital force theory. The Pressure Flow Hypothesis, also known as the Mass Flow Hypothesis, is the best-supported theory to explain the movement of sap through the phloem. ... This creates turgor pressure, also known as hydrostatic pressure, in the phloem. Movement of phloem sap occurs by bulk flow (mass flow) from sugar sources to sugar sinks. |
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| 861. |
How many times does carbonic anhydrase enhance the formation of carbonic acid? |
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Answer» Really??? 10 million times |
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| 862. |
Which is the longest and smallest bone in human body ?? |
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Answer» Femur is the longest bone which is thighbone. The smallest bone is stapes whish is the third bone of the three ossicles present in the middle ear. Longest:femur and smallest:stapes |
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| 863. |
Write about different types enzymes |
| Answer» These are six type of enzyme are as follow : oxidoreductases, transferses, isomerases, hydrolases, lyases, ligases | |
| 864. |
Sa node |
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Answer» After reading ur question firstly i thought ....in which language are u talking.....then i got realised after reading prakul\'s answer??? Sino auricular node is located in the wall of right auricle of superior vena cava _Has capacity of self excitation -acts as a pacemaker -controlled by cardio vascular centre present in medulla oblongata of brain |
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| 865. |
Draw the internal structure of heart |
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Answer» No I will send you send me your no |
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| 866. |
What is guttation? |
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Answer» Guttation is the process of loss of water from the uninjured part or leaves of the plant in the form of water droplets is called guttation. U always give a nice answer Thank you Guttation is the exudation of drops of xylem sap on the tips or edges of leaves of some vascular plants, such as grasses. Guttation is not to be confused with dew, which condenses from the atmosphere onto the plant surface. |
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| 867. |
EMP stands for? |
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Answer» An electromagnetic pulse (EMP) is an intense burst of electromagnetic (EM) energy caused by an abrupt, rapid acceleration of charged particles, usually electron s. An EMP can contain energy components over a large part of the EM spectrum , from very-low-frequency ( VLF ) radio to ultraviolet ( UV ) wavelengths. Electromagnetic pulse |
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| 868. |
What is transpiration pull theory? |
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Answer» It is the pulling force responsible for lifting the water column. As water is lost in form of water vapour to atmosphere from the mesophyll cells by transpiration, a negative hydrostatic pressure is created in the mesophyll cells which in turn draw water from veins of the leaves.The negative tension is then gradually transmitted downwards via xylem tissues of the leaf, stem and finally to the roots. As a result there is a continuous upward movement of water column in the plant. 1 atm. pressure can raise water to a height of more than 32ft. So a tension of 13 atm is needed to raise water to a height of 416 feet, scientist have measured this tension to be more than 75 atm. in case of trees, more than 400 feet in height.Thus the transpiration pull acts as pull from above on the-whole of water column of the plant which pushes the water column of xylem vessels of roots lowers leaves i.e. in an upward direction. This is how ascent of sap is affected in plants.The whole process can be compared to a person (transpiration pull) pulling a bucket full of water with a steel rope (unbroken and continuous water column) Respiration |
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| 869. |
What do you mean by tertiary structure of protein? |
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Answer» -The helical polypeptide molecules may fold in itself and assumes a complex but specific form.-it may be rod shaped or spherical or any other form. These specific geometrical shapes are known as tertiary structure of proteins.-It is 3D structure of proteins. -It is maintained by disulphite bond and H bond,ionic bond,hydrophobic interaction, hydrophilic interaction, vanderwall forceTertiary structure is affected by:- PH, temperature, chemicalThe tertiary structure is mainly observerd in globular proteins \tBonds between neighboring amino acids results in further folded structure\tTertiary structure depends upon the primary structure\tCreates active sites of enzymatic proteins\tSome of the tertiary structures are spherical forming Globular proteins; while some others are like long fibers forming Fibrous proteins Protein |
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| 870. |
List any 3 differences between diffusion And osmosis |
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Answer» 1) Direction of diffusion is from higher concentration to lower concentration but in osmosis the direction from lower concentration to higher concentration. 2) nature of medium in diffusion in any medium but in osmosis nature of medium is always in liquid medium. 3)nature of molecules in diffusion may be solid or liquid or gases but in osmosis it is always water or any other solvent molecules. diffussion means moment of particle from higherconcentration to lower concentration but Osmosis means moment of water particle from higher concentration to lower concentration through diffusion diffusion is any particle but osmosis means only moment of water |
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| 871. |
Coaching for biology in samastip |
| Answer» | |
| 872. |
Define conjugate acid and conjugate base |
| Answer» Cojugate acid is obtained from base in which one H+ in added. Cojugate base is one which is obtained from acid where one H+ is removed.For example :- NH3 + H2O ➡️ NH4 + OHIn this example, NH4 is conjugate acid of base NH3 and OH is conjugte base of acid H2O. | |
| 873. |
What is hydroponics?? |
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Answer» Hydroponics is a subset of hydroculture, which is a method of growing plants without soil by using mineral nutrient solutions in a water solvent.[1] Terrestrial plants may be grown with only their roots exposed to the mineral solution, or the roots may be supported by an inert medium, such as perlite or gravel.The nutrients used in hydroponic systems can come from an array of different sources; these can include, but are not limited to, byproduct from fish waste, duck manure, or purchased chemical fertilisers. Hydrophonic or hydrophobic |
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| 874. |
what is cell envelop |
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Answer» Cell envelope is a combination of the cell membrane, cell wall, and an outer membrane if it is present. Usually, this envelope is a characteristic of prokaryotes like bacteria. Hence, the composition would be cell membrane, bacterial cell wall and bacterial outer membrane (made of glycocalyx). It is the outer protective covering of all most bacterias.it is made up of 3 layers each layer is stocked with each other they are-1)glycocalyx or the outermost layer.2)cell wall or the middle layer3)cell membrane or inner most layer |
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| 875. |
explain mitotic cell division Breafly |
| Answer» Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells. During cell division, mitosis refers specifically to the separation of the duplicated genetic material carried in the nucleus. | |
| 876. |
explain addition disease? |
| Answer» Primary adrenal insufficiency is\xa0caused\xa0by the destruction of the adrenal gland. Idiopathic adrenal atrophy is the\xa0most common cause\xa0of adrenal insufficiency. It is not known exactly why this occurs, but it is believed to be related to an autoimmune response that results in the slow destruction of adrenal tissue.\xa0Addison\'s disease, also called adrenal insufficiency, is an uncommon\xa0disorder\xa0that occurs when your body doesn\'t produce enough of certain hormones. In\xa0Addison\'s disease, your adrenal glands, located just above your kidneys, produce too little cortisol and, often, too little aldosterone. | |
| 877. |
explain raas cycle ? kidney regulation |
| Answer» Your body has a huge system involved in the sensation and control of blood pressure, not only within the kidneys, but all over the body - especially in times of great need. This is in contrast to a smaller system called tubuloglomerular feedback, which you can think of as the system that senses and controls blood pressure and glomerular filtration rate within the kidneys on a moment-by-moment basis. When called upon, this smaller system can also rev up the really big system I\'m about to get into. The most important system involved in the regulation of systemic blood pressure, renal blood flow and glomerular filtration rate is called the renin-angiotensin-aldosterone system, or (RAAS) for short. | |
| 878. |
Best coaching of biology in samatipur |
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| 879. |
what is matrix ? which is present in mitochondria |
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Answer» MATRIX IS THE MATERIAL IN ANIMAL OR PLANT CELLS, IN WHICH MORE SPECIALISED STRUCTURES ARE EMBEDDED, AND A SPECIFIC PART OF THE MITOCHONDRIA. THE INTERNAL STRUCTURE OF CONNECTIVE TISSUE IS AN EXTRACELLULAR MATRIX. FINGER NAILS AND TOENAILS GROW FROM MATRICES . IT IS FOUMD IN VARIOUS CONNECTIVE TISSUES..... The mitochondrion consists of an outer membrane, an inner membrane, and a gel-like material called the matrix. This matrix is more viscous than the cell\'s cytoplasm as it contains less water.The mitochondrial matrix is a viscous fluid that contains a mixture of enzymes and proteins. It also comprises ribosomes, inorganic ions, mitochondrial DNA, nucleotide cofactors, and organic molecules. The enzymes present in the matrix play an important role in the synthesis of ATP molecules. |
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| 880. |
Explain PPLO |
| Answer» \tPPLO stands for Pleuro Pneumonia Like Organism. It is an organism that causes pneumonia in human beings.\tIt is resistant to many commonly available antibiotics. It belongs to the group mycoplasma that includes bacteria which lack cell wall.\tThey can survive in the absence of oxygen. | |
| 881. |
Name the fungus which causes diseases in wheat [1]drust [2]smut . |
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Answer» Black rust of wheat is by puccinia graminis triticiLoose smut of wheat is by istilago tritia Basidiomycetes May be smuy |
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| 882. |
What is systematic . |
| Answer» Systematics is the study of the units of biodiversity.You can also say that systematics is the study of identification , nomenclature and classification of plants and animals . It helps in storing the information about living organisms. | |
| 883. |
How many species are there in our india . |
| Answer» There are 410 species in India. There are about 410 species of mammals known from India ,which is about 8.86% of the world species. India has the most number of cat species than any other country. The World Conservation monitoring centre gives an estimate of about 15000 species of flowering plants in India. | |
| 884. |
Q.1 What is meaning of growth. |
| Answer» Growth is defined as an irreversible constant increase in the size of an organ or even an individual cell. Put differently, growth is the most fundamental characteristics of living bodies accompanied by various metabolic processes that take place at the cost of energy. The processes can be anabolic or catabolic. When it comes to plants, the seeds germinate, develop into a seedling and acquires a shape of an adult plant are discrete stages of growth and the growth of Plants is indefinite. | |
| 885. |
How is the excited PS II brought back to the ground state? |
| Answer» The ionized chlorophyll-a+\xa0of\xa0PS II\xa0is\xa0brought back to the ground state\xa0with the help of the electrons made available through the photolysis of water. (e) Non-Cyclic electron transfer: ... Because of the zig-zag path of the electrons, the non cyclic process is also called \'Z\' scheme electron transport. | |
| 886. |
Yakshi wait for 2-3 days? |
| Answer» Why????what happened???? | |
| 887. |
Explain plasmolysis and what is isotonic,hypotonic and hypertonic |
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Answer» If a normal plant cell is placed in a hypertonic solution , the shrinkage od protoplasm away from its cell wall takes place . This process is called plasmolysis. Hypertonic solution - When the surrounding solution possesses higher osmotic pressure than that of the cell sap.Hypotonic solution - When the surrounding solution possesses lower osmotic pressure than that of the cell sap.Isotonic solution - When the osmotic pressure of the surrounding solution and that of he cell sap is same. Plasmolysis is the process in which cells lose water in a hypertonic solution hypotonic solution is any solution that has a lower osmotic pressure than another solution Plasmolysis-contraction of the protoplast of a plant cell as a result of loss of water from the cell.Hypotonic-hypotonic solution is a water that is less-concentrated than the cell the water surrounds. Hypertonic-hypertonic solution is basically the opposite of a hypotonic solution. In this case, the water has more of a solute than the cell does. two solutions having the same osmotic pressure across a semipermeable membrane known as isotonic solution A hypertonic solution is a particular type of solution that has a greater concentration of solutes on the outside of a cell when compared with the inside of a cell. |
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| 888. |
Easy define of critical concentration in plants... |
| Answer» The concentration of the essential element below which growth in plant is reduced is termed as critical concentration. | |
| 889. |
What is Scota active stomata? |
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Answer» IT\'S SCOTOACTIVE STOMATA .WHEN THE STOMATA IS CLOSED IN THE DAY TIME AND IT IS OPENED DURING NIGHT TIME , THIS TYPE OF STOMATA IS CALLED SCOTOACTIVE STOMATA.... Stomata Stomata opens during night in succulent plants and closes during the day. ... This type of stomatal opening is called \'Scotoactive type\' |
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| 890. |
What is aestivation? |
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Answer» Aestivation is the mode of arrangement of sepals or petals in a floral bud with respect to the other members of the same whorl.There are four main types of aestivation. They are:1. Valvate aestivation:2. Twisted aestivation:3. Imbricate aestivation:4. Vexillary aestivation: the arrangement of petals and sepals in a flower bud |
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| 891. |
Define the term "Pseudounipolar". |
| Answer» pseudounipolar neuron is a kind of sensory neuron in the peripheral nervous system. This neuron contains an axon that has split into two branches; one branch runs to the periphery and the other to the spinal cord. | |
| 892. |
Difference between B-DNA and Z-DNA |
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Answer» Thanks \tB-DNAZ-DNAThe B-DNA right handed helixThe Z DNAis a left handed helical structureThe distane of helix/pitch/turn is 3.4 nm.Size of helix is 4.5 nm.The distance between adjacent base pair is 0.34 nm since 10 bp/helix. Distance between adjacent bp is 0.375 nm since there are 12 bp/helix. The diameter of the DNA is approximately 2 nm .The diameter is 1.8 nm.\t\xa0 |
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| 893. |
what is centromere |
| Answer» It is a region of chromosome at which spindle fibril is attached during cell division | |
| 894. |
what is middle lammellae? |
| Answer» Binding layer between the adjacent plant cell | |
| 895. |
HeY!!\xa0GooD Afternoon All!! xD |
| Answer» Sbko Namastey?✌ | |
| 896. |
Bile juice contains no digestive enzymes,yet it is important for digestion.Why? |
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Answer» Because it helps in emulsification of fat. If fat will not emulsify then it will deposit inside the blood vessels and may causes block. It also causes high blood pressure etc. bile helps in emusification of fats it neutralizes the acidic ph of chime bile salts are needed for formation of chylomicrons for absorption of fats so, although bile is not having Andy pigments it is needed for digestion Although bile juice does not contain any digestive enzymes, it helps in the digestion of fats. Bile juice has some bile pigments. These break down large fat globules into smaller globules so that the pancreatic enzymes can easily act on them. This process is known as emulsification of fats. Bile juice also makes the medium alkaline deu to presense of NaHCO3 and also activate lipase. |
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| 897. |
Easy defination of critical temperature... |
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Answer» Sorry it\'s critical concentration...i wrote it by mistake Thanks but I asked in biology not in chemistry the temperature at which the gas cannot be converted to liquid by applying pressure after this temperature it\'s called critical temprature |
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| 898. |
What is erythroblastosis foetalis? |
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Answer» Srry thanks sagar Thanks riya Hlw Riya........ It is the stage in which when mother is having negitive blood group and father having positive blood group. After the birth of first child the blood of mother and child mix due to this the mothers blood will get deantgenified and when second child take birth again blood of mother and child mix and due to this the mother will lead to death |
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| 899. |
Hi everyone i am annu |
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Answer» I think ab kaafi log friends ban chukey h.......? Kon\'nichiwa.....???Ogenkidesuka???? |
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| 900. |
is DNA is present in chloroplast |
| Answer» Although the vast majority of DNA in most eukaryotes is found in the nucleus, some DNA is present within the mitochondria of animals, plants, and fungi and within the chloroplasts of plants. | |