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3301.

5. In Fig. 9.17, PQRS and ABRS are parallelograms P Aand X is any point on side BR. Show that(1)ar(PQRS) = ar (ABRS)(ii) ar (AX S)2ar (PORS)Fig. 9.17

Answer»

1)

3302.

what should be the daily routine of a 19 year old goals

Answer»

The famous sayings of The famous person !

3303.

What is the old name of RCH programmes? When was it initiated in India.

Answer»

The Reproductive and Child Health (RCH) Programme which was launched on 15th October, 1997 incorporated from two earlier programmes i.e, National family welfare (NFW) programme and Child survival & Safe motherhood (CSSM) programme.It was initiated in 1951

Please like the solution 👍 ✔️👍

3304.

1. What is a tissue?441111 nttilitu of tis

Answer»

Atissueis one of the building blocks of an organism either animal or plant. An organism is comprised of tissues, which are made up of individual cells.

3305.

Hod geneval grouuth cund Sexval machurat?on10เงิdifferent som each othes

Answer»

General growth and sexual maturation are different from each other in many senses. General growth is all about attaining physical maturity in which the organism undergoes through various stages to become an adult. Once the growth is complete, it lays the foundation for sexual maturity. Sexual maturity is related to preparing the body for physical and psychological responsibilities related to reproduction.

3306.

ham is made from fibres

Answer»

TrueFibreismadefromyarnby spinning. Spinning isdonemanually as well as using machines by twisting fiber; like rope making.

yes

3307.

Writea brief note on peptic ulcer ?

Answer»

Peptic ulcers are sores that develop in the lining of the stomach, lower esophagus, or small intestine. They're usually formed as a result of inflammation caused by the bacteria H. pylori, as well as from erosion from stomach acids. Peptic ulcers are a fairly common health problem.

thank u

3308.

Q.1. Why do we classify organisms?

Answer»

It is necessary toclassify organismsbecause: ... It helps in the identification of livingorganismsas well as in understanding the diversity of livingorganisms.Classificationhelps us to learn about different kinds of plants and animals, their features, similarities and differences.

3309.

0 Why do iwe classify organisms?

Answer»

Scientistsclassify organismsin order to study and include eachorganismalong with its identification and habitat. It helps in the specific identification of any givenorganismfrom a pool. Scientistsclassify organismsin order to understand their characteristics.

3310.

organisms thal0.oesplration.olt designed to maximise the exchange of gases?g he the consequences of a deficieney of haemodl

Answer»

Thealveoliare thin walled and richly supplied with a network of blood vessels to facilitateexchange of gases between blood and the air filled inalveoli.

They have balloon – like structure that provide maximum surface area forexchange of gases.

3311.

nature, poetess seocual mode of 、repood UGton3

Answer»

Natural selection can not produce information it can only choose the information best suited or adapted to a particular environment by eliminating and causing the extinction of those variations that are less well adapted.

Sexual reproduction provides a vast selection of variations for Natural Selection to chose from. Think about all the variations of humans on the planet some suited to some environments better than other variations.Please like the solution 👍 ✔️

3312.

हक kb haf b kel LS

Answer»

१३०/८० से ऊपर का रक्तचाप, उच्च रक्तचाप या हाइपरटेंशन कहलाता है। इसका अर्थ है कि धमनियों में उच्च चाप (तनाव) है। उच्च रक्तचाप का अर्थ यह नहीं है कि अत्यधिक भावनात्मक तनाव हो। भावनात्मक तनाव व दबाव अस्थायी तौर पर रक्त के दाब को बढ़ा देते हैं। सामान्यतः रक्तचाप १२०/८० से कम होनी चाहिए और १२०/८० तथा १३९/८९ के बीच का रक्त का दबाव पूर्व उच्च रक्तचाप (प्री हाइपरटेंशन) कहलाता है और १४०/९० या उससे अधिक का रक्तचाप उच्च समझा जाता है। उच्च रक्तचाप से हृदय रोग, गुर्दे की बीमारी, धमनियों का सख्त हो जाने, आंखे खराब होने और मस्तिष्क खराब होने का जोखिम बढ़ जाता है। है। युवाओं में ब्लड प्रेशर की समस्या का मुख्य कारण उनकी अनियमित जीवन शैली और गलत खान-पान होते हैं।

3313.

, 12 to 213 (C)tan-IV x = 106-1 (1-x)tan XCOS

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3314.

Smallest cell so far known is(1) Bacteria(23 Cyanobacteria(3) PPLO(4) Virus

Answer»

cyanobacteria is the smallest cell

cyanobacteria is the smallest cell

cyanobacteria is the smallest cell

cyanobacteria is the smallest cell

cyanobacteria is the smallest cell

cyanobacteria is the smallest cell

cyanobacteria is the smallest cell

cyanobacteria is the smallest cell

cyanobacteria is the smallest cell

cyanobacteria is the smallest cell

cyanobacteria is the smallest cell

cyanobacteria is the smallest cell

Mycoplasmais alsocalledasPPLO(Pleuro Pneumonia Like organisms). They are the smallest living organisms on earth, they also lack cell wall and can survive without oxygen. ManyMycoplasmaare pathogenic to animals and plants.

Option (3) is correct.

why does u had hidden it ????

3315.

Foam accumulates on the surface kept for a long time in summer

Answer»

1. Saponins - Lentils contain glycosides called Saponins. When they come in contact with water, they get dissolved. These saponins are substances which have properties similar to soap, which when boiled trap the air in them forming a foam.

2. Protein Denaturation - Another theory is that the proteins in the lentils are released when boiled. The air particles which hold more dissolved gases than the hot water leech out forming a foam on the surface.

Since it is harmful toconsume any denatured protein or a substance whose natural structure has beendamaged, it is advisable to remove the foam from the surface before consumingthem.

3316.

if 3 cot theta = 4 find value of 5 sin theta - 3 cos theta÷5 sin theta + 3 cos theta

Answer»

ty

3317.

5.Why do man made material like plastics persist for a long time in our environment.

Answer»

Does Plastic Persist in the Environment?

Plastic is a man-made material that is designed to be durable and to withstand the elements; consequently, it does not break down readily in the environment, but rather persists for a very long time. When it does eventually start to break down, it doesn’t disappear, but rather breaks down into smaller and smaller pieces, eventually resulting in gazillions of tiny plastic fragments – or microplastics – measuring less than 5mm.

Microplastics

While plastic pollution on land has always been recognized as a huge environmental problem, only recently has the extent ofmarine plastic pollutionbecome truly apparent. This is partly because plastic tends to sink to the ocean depths, out of sight and out of mind. But as more and more plastic debris washes up onto beaches around the world, and people become increasingly aware of the existence of theGreat Pacific Garbage Patch– an extensive area where plastic debris converges in the middle of the ocean – conservationists are beginning to sit up and alarm bells are beginning to sound. Microplastics are an emerging pollutant that has scientists particularly concerned. Due to their tiny size, they have until recently slipped under the radar. Butrecent oceanic surveyshave revealed that these tiny particles are abundant in all the world’s oceans, and scientists are particularly concerned about the impact on marine animals and higher predators, especially man, who relies heavily on the world’s ocean for a source of protein food.

3318.

4. a) What happens if we overeat or go hungry for a long time?

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“Whenpeoplearesuperhungry,theytend togofor the carbs and sweets because those will raise their blood sugar,”

Overeatingusuallyhappensbecauseyou're taking food in way too quickly and ignoring your body's satiety cues, habits that, overtime, can lead to weight gain

3319.

Science:1) 1 time Explain the process of aerobic &anaerobic respiration.

Answer»

Aerobic Respiration

Aerobic means “with air”. Therefore, aerobic respiration is the process of cellular respiration that uses oxygen to produce energy from food. This type of respiration is common in most of the plants and animals including humans, birds, and other mammals. While breathing, we inhale air that contains oxygen and we exhale air rich in carbon dioxide. As we breathe in, the oxygen-rich air is transported to all the parts of our body and ultimately to each cell. Inside the cell, the food, which contains glucose, is broken down into carbon dioxide and water with the help of oxygen. The process of breaking down the food particles releases energy, which is then utilized by our body. The energy released via aerobic respiration helps plants and animals, including us, grow.

The process can be simply explained with the help of the following equation:

Glucose + Oxygen → Carbon dioxide + Water + Energy

Aerobic respiration is a continuous process and it happens all the time inside thecellsof animals and plants.

Anaerobic Respiration

Anaerobic means “without air”. Therefore, this type of cellular respiration does not use oxygen to produce energy. Sometimes there is not enough oxygen around for some organisms to respire, but they still need the energy to survive. Due to lack of oxygen, they carry out respiration in the absence of oxygen to produce the energy they require, which is referred to as anaerobic respiration. Anaerobic respiration usually occurs in lower plants and microorganisms. In the absence of oxygen, the glucose derived from food is broken down into alcohol and carbon dioxide along with the evolution of energy.

Glucose → Alcohol + Carbon dioxide + Energy

Anaerobic respiration is also used by multi-cellular organisms, like us, as a temporary response to oxygen-less conditions. During heavy exercise, fast running, cycling or weight lifting, our body demands high energy. As the supply of oxygen is limited, the muscle cells inside our body resort to anaerobic respiration to fulfill the energy demand.

Glucose → Lactic acid + Energy

Anaerobic respiration produces the relatively lesser amount of energy as compared to aerobic respiration as glucose is not completely broken down in the absence of oxygen.

what man how much you haved typed

3320.

what do dry apricots placed in salt solution do not swell why they do so when kept in the water?

Answer»

hypotonic solution in this case is water where isotonic is salt water

3321.

List one social and one environmental problem due to which theenvironmentalists protested against raising the height of the "SardarSarover Dam" on river Narmada.

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3322.

8. Describe the Green House Effect in your own words.

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3323.

hat is the type of reproduction shown in the figure?LeafletsBuds

Answer»

vegetative propagation

Asexual reproduction -(vegetative propagation)

vegetative reproduction

3324.

. What is the taste of water?

Answer»

Taste of water is tasteless

ya Taste of water is taste less.

Water have no any taste

Water is taste less.

water have no test.it is testless.

taste of water is tasteless. is the correct answer of the given question

“The natural substancewaterper se tends to be tasteless,” wrote Aristotle. In his view, it serves only as the vehicle forflavor. But eventually, scientists began to notice that a draught of pure distilledwatercould provoke a certaintaste. Some found it bitter on the tongue; others said it was insipid.

water have no test it is testless

“The natural substancewaterper se tends to be tasteless,” wrote Aristotle. In his view, it serves only as the vehicle forflavor. But eventually, scientists began to notice that a draught of pure distilledwatercould provoke a certaintaste. Some found it bitter on the tongue; others said it was insipid.

water is tasteless....

it is tasteless means water doesn't have any kind of taste

water is taaste less

3325.

(d) Ie) Sea water isin taste.

Answer»

Sea water is salty in taste.

sea water is salty in taste

3326.

How many taste buds do young people have?

Answer»

100000

3327.

Bio-gas is considered to be a boon to thefarmers. Give reasons.CBSE 2011

Answer»

Biogas is considered to be a boon to the farmers because:

a)Farmers can produce clean domestic fuel from the wastes like animal dung, dry leaves, dry plants, etc.

b)Spent slurry can be used in the fields as manure to increase the fertility of the soil.

c) can be used to generate electricity which can be utilised to run modern machines used in the fields to save time and energy.

because it can be used to generate electricity

it can be used to prepare domestic fuel

it can be used to prepare domestic fuel

3328.

Fig. 9.53, if BP lI C and AC BC, then the measure of x is20°(b) 25°(c) 30°(d) 35°25070°Fig. 9.53

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3329.

37. Which one of the following structures is anorganelle within an organelle?(1) Ribosome(3) ER[AIPMT (Mains)-2012](2) Peroxisome(4) Mesosome

Answer»

option 1 is the answer.

3330.

How are milch animals different from draught animals? What are thetwo desirable criteria need to be incorporated in mrch animals forcattle farming

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Milch animals are those animals whivyh are tamed with the purpose of milk production( eg. Jersey cow). Draught animals are those animals which are used for ploughing and tilling of the farms(eg.Nagori cows).The criteria for milch animals should be:a)Longer lactation periods and large quantities of milk produced.b) Resistance to deadly diseases.

3331.

7. Which of the following structures is the controller of all activities within the cell?(a) Lysosomes(b) Nucleus(c) Ribosomes(d) Mitochondria.How does it carry on the above function?

Answer»

nucleus of the cell is the controller as it is oval or spherical in shape .Inside it there are chromosomes which carry Gene's.They order the cell to perform certain activities

nucleus is the structure in the cell, which controls all the activities, which are going to take place in that particular cell. Nucleus is able to do that because of RNA and DNA present in it's center.

option b is the correct answer of the given

nucleus is the correct answer

Nucleus.The nuleus has a double layered covering celled nuclear membrane.The nuclear has pores which allow the transfer of material from inside the nucleus to its outside to the cytoplasm.

3332.

e.7. Why are the offsprings of egglaying animals at a greater risk that theoffsprings of viviparons animals?

Answer»

Oviparous animals lay eggs outside their body. As a result, the eggs of these animals are under continuous threat from various environmental factors. On the other hand, in viviparous animals, the development of the egg takes place inside the body of the female. Hence, the offspring of an egg-laying or oviparous animal is at greater risk as compared to the offspring of a viviparous animal, which gives birth to its young ones.

3333.

45.The main arena of various types of activities of acell is(1) Nucleus(3) MitochondrionAIPMT (Prelims)-2010](2) Plasma membrane(4) Cytoplasm

Answer»

option 4The main arena of various types of activities of a cell is cytoplasm. It forms the living protoploasm of a cell excluding the nucleus. It consists of proteins, fats, carbohydrates, nucleic acids, vitamins, waste metabolits and all organelles.

3334.

what is dihybrid cross?

Answer»

Dihybrid cross is a cross between two different lines (varieties, strains) that differ in two observed traits. In the Mendelian sense, between the alleles of both these loci there is a relationship of complete dominance - recessive. ... the 9 represents the proportion of individuals displaying both dominant traits.

3335.

.88 Genetic traits are often carried on separatechromosomes. Which of the followinggenotype represents a dihybrid organism ?ough work

Answer»

option (3) is correct

3336.

In a dihybrid cross, f2 generationoffsprings show four different phenotypeswhile the genotypes areO nineO eightO sixteen

Answer»

9 type of genotypephenotypic ratio is 9:3:3:1genotypic ratio 1:2:2:4:2:1:2:1:1

Answer is correct.

3337.

a tall plant is crossed with a dwarf plant, this type of cross is called9 Dihybrid (b) Monohybrid (c) Reciprocal(d) T

Answer»

answer is monohybrid cross

The answer is Dihybrid Cross

thjs type of cross is called monohybrid.

monohybrid cross is the right answer

it is called monohybrid cross

option (b) monohybrid is the right answer

monohybrid is a type of crossin which a tall plant is crossed with a dwarf.

this type of cross is called monohybrid

B. Monohybrid is right answer

monohybrid cross is the correct answer of the given question

when a tall plant id crossed with a dwarf plant , it is called Monohybrid cross.option B is right.

dishy bridge is correct answer

monohybrid cross is right answer

c. is the right answer

a. dihybrid is right answer because diahybrid cross is done using two different types of plants features

3338.

describe various paths of glucose breakdown in organism?

Answer»

Glycolysis. Glycolysis is the process of breaking down aglucosemolecule into two pyruvate molecules, while storing energy released during this process as ATP and NADH. Nearlyall organisms thatbreak down glucoseutilize glycolysis. ... During the first phase, it requires thebreakdownof two ATP molecules

Breaking down of glucose can occur by various pathways ;

⑴ In presence of oxygen : - Breaking down of glucose into pyruvate takes place in Mitochondria of a cell.- End products are CO₂ , H₂O and energy.

⑵ In insufficient presence of oxygen :- In muscle cells, due to insufficient presence of oxygen the cells undergoes anaerobic respiration.- End products are Lactic acid and lot amount of energy.

⑶ In absence of Oxygen :- In absence of Oxygen, glucose breakdown into pyruvate in cytoplasm only.- End product are Ethanol, and small amount of energy.

please like my answer if you find it useful

3339.

Why the shapes of cells differ from various organism

Answer»

Animal cellscome in manydifferent shapesand sizes. Theshapes of cellshave evolved to help them carry out their specific function in the body, so looking at acell's shapecan give clues about what it does. Neurons arecellsin the brain and nervous system.

It should be dependent on the shape of cell according to which they perform functions

3340.

| CI0D नाई DHwSOLdoP LS >SUSHDLAY

Answer»

The endoplasmic reticulum serves many general functions, including the folding of protein molecules in sacs called cisternae and the transport of synthesized proteins in vesicles to theGolgi apparatus.

The functions of endoplasmic reticulum are:1. It helps in transport.2. It provides large surface area for metabolic functions.3. Smooth ER helps to detoxify poisonous substances and wax.4. Found in liver cells.5. Smooth ER also helps in the manufacture of lipids and proteins which in turn builds up the cell membrane. This process is called membrane biogenesis.6. Rough ER helps in the transport of proteins formed by ribosomes.

3341.

what ls photosynthesis

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what is auxin and function of auxin in plants

3342.

What do you mean by the term lifestyle? Elucidate the importance of positive/healthylifestyle in detail.

Answer»

lifestyle

A way of living of individuals, families (households), and societies, which theymanifestin coping with their physical,psychological, social, and economic environments on a day-to-day basis.Lifestyle is expressed in bothworkand leisurebehaviorpatterns and (on anindividualbasis) in activities, attitudes, interests, opinions,values, andallocationofincome. It also reflects people's selfimageor self concept; the way they see themselves and believe they are seen by the others. Lifestyle is acompositeof motivations, needs, and wants and is influenced by factors such asculture,family, reference groups, andsocial class.

3343.

3. Describe the importance of healthy/positive lifestyle

Answer»

Ahealthy lifestylehas both short and long termhealthbenefits. Long term, eating a balanced diet, taking regular exercise and maintaining ahealthyweight can add years to yourlifeand reduce the risk of certain diseases including cancer, diabetes, cardiovascular disease, osteoporosis and obesity.

3344.

7.How can health threat be prevented through lifestyle change? Discuss in detail.

Answer»

The following points are very significant in preventing major health threats for maintaining a healthy lifestyle.

1.Indulging in Regular Physical Exercise: It is usually seen that most of the people avoid doing any physical activity or exercise in their daily life. They prefer elevator instead of staircase and motorbIke instead of walking. As a matter of fact, regular physical activity helps in preventing major health threats.Waliking is a simple but effective exercise that most of the people enjoy.

2.Adopting Healthy Eating Habits: Healthy eating habits can help individuals in preventing as well as controlling the diseases. A diet that includes plenty of vegetables, fruits and whole grain cereals is recommended in part because such a diet is rich in fibres. Replacing the harmful types of fats, i.e. saturated and trans fatty acids with unsaturated fats reduces the risk of coronary artery disease.

3.Maintaining a Healthy Weight: Obesity is a worldwide problem. Overweight individuals experience elevation in the risks of coronary artery disease, hypertension, diabetes,etc. BMI which should not exceed 24.9 mat be attained by adopting a healthy lifestyle in which an individual should stick to lifetime concept of weight control. It can be achieved by regular physical exercise, cutting calories,avoiding overeating, fatty, junk and fast foods from the diet and one should also take care of intake of calories and its expenditure .

4. Quitting Smoking: Quitting smoking is significant for a healthy lifestyle. In fact, smoking or use of tobacco in any form increases the blood pressure which may cause stroke and coronary heart disease. Avoiding the use of tobacco helps in preventing health threats. Even avoiding the use of smokeless tobacco also prevents oral cancer up to some extent.

5.Getting sufficient Sleep: Sufficient sleep is also a very significant part of a healthy lifestyle, particularly affecting mood and mental state. Insufficient sleep is a risk factor for injuries. So,sufficient and sound sleep is necessary for keeping an individual away from fatigue or exertion. One becomes fresh and energetic after having an adequate sleep.

3345.

2. Explain why the Nazis forced Jewish people to wear Stars of David on their clothing andadopt the middle names of Sara, for women, and Israel, for men.

Answer»
3346.

8.Narrate the components of positive lifestyle in detail.

Answer»

5 components of a healthy lifestyle,

Nutrition: From calories to cavities, the food you eat impacts every aspect of your well being. You may eat first with your eyes, but your mouth, teeth and gums are the first points of nutritional contact with what you consume.

Exercise:We are not designed to be sedentary beings. Our bodies are built to move. Proper fitness strengthens muscles and improves blood flow. Research finds that adults in good aerobic shape are far less likely to experiencegum disease.

Sleep:The time and effort you invest in fitness and nutrition are wasted if you don’t get enough quality sleep. Even well-intentioned sleepers can be derailed by snoring and sleep apnea. Your dentist may be able to help you overcome these common disorders.

Stress:It is reported that between 75% and 90% of all doctor visits are linked to stress-related complaints or ailments. Stress can also lead chronic teeth-grinding and temporomandibular joint disorder (TMD), a term that refers to a variety of dental conditions that affect jaw muscles, joints and facial nerves.

Fun:No one can enjoy a healthy lifestyle without a serious dose of fun. Recreational activities, social encounters and personal connections are critical to overall well being. Bad breath can inhibit self-confidence and negatively impact personal and professional interactions.

3347.

.... ... का न नननाननलबतरका के e.... ... fne’ atrach 4, 1) Efasete ceid i3 utanone i) Wexnal,हक ol

Answer»
3348.

5. Auses the expansion of the liquid within tom

Answer»

A thermometer uses the expansion of the liquid within it to measure the temperature.

Thermometer uses the expansion of liquid within

the answer will be a thermometer

The thermometer only uses it

3349.

5 R ,on]mim{ Lu‘(}n,,r-]u.mrflvfl,.

Answer»

Definition ofanimal kingdom. : a basic group of natural objects that includes all living and extinctanimals— compare mineralkingdom, plantkingdom.

Definition ofanimal kingdom

:a basic group of natural objects that includes all living and extinct animals

3350.

2. What are porins? What role do they play in diffusion?

Answer»

Whatroledothey play in diffusion?Porinsare types of proteins which form pores of large sizes in the outer membranes of plastids such as chloroplast, mitochondria and the membranes in bacteria.Theyhelp in facilitating the passive transport of small-sized protein molecules.