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2301.

What is the difference between the concepts of food chain and food web?

Answer» What is the difference between the concepts of food chain and food web?
2302.

How do organisms of Porifera differ from those of Cnidaria ?

Answer» How do organisms of Porifera differ from those of Cnidaria ?
2303.

Which of the following is a function of saliva?

Answer»

Which of the following is a function of saliva?


2304.

Is sarcomere is present in H zone?? And when the size of its decrease??

Answer» Is sarcomere is present in H zone?? And when the size of its decrease??
2305.

Name the component present in marble which reacts with acids present in acid rain.

Answer»

Name the component present in marble which reacts with acids present in acid rain.

2306.

What is connective tissue?

Answer» What is connective tissue?
2307.

a student recorded the mass of dry raisins is 6.0 g and mass of raisins after soaking them in water in 10.5 g. calculate the percentage of water absorbed by raisins.

Answer» a student recorded the mass of dry raisins is 6.0 g and mass of raisins after soaking them in water in 10.5 g. calculate the percentage of water absorbed by raisins.
2308.

What is true about recombinant DNA technology?

Answer»

What is true about recombinant DNA technology?


2309.

What causes wrinkles on skin in older age?

Answer»

What causes wrinkles on skin in older age?



2310.

It is believed that ______________ are the early ancestors of land chordates to first form limbs, cranium and other terrestrial features despite their aquatic existence.

Answer»

It is believed that ______________ are the early ancestors of land chordates to first form limbs, cranium and other terrestrial features despite their aquatic existence.


2311.

Is the bond length and internuclear distance is same?

Answer» Is the bond length and internuclear distance is same?
2312.

Classify the following diseases as infectious or non-infectious.a) AIDS.b) Tuberculosis.c) Cholera.d) High blood pressure.e) Heart disease.f) Pneumonia.g) Cancer.

Answer» Classify the following diseases as infectious or non-infectious.



a) AIDS.

b) Tuberculosis.

c) Cholera.

d) High blood pressure.

e) Heart disease.

f) Pneumonia.

g) Cancer.
2313.

Which ones of the following animals are invertebrates? Housefly, silverfish, trout, jellyfish, whale, penguin, lizard and sponge.

Answer»

Which ones of the following animals are invertebrates?

Housefly, silverfish, trout, jellyfish, whale, penguin, lizard and sponge.

2314.

Which chemical is used in the experiment to demonstrate anaerobic respiration in plants?

Answer»

Which chemical is used in the experiment to demonstrate anaerobic respiration in plants?


2315.

Mention two factors which affect food grains.

Answer»

Mention two factors which affect food grains.

2316.

Question 2Will advanced organisms be the same as complex organisms? Why?

Answer» Question 2

Will advanced organisms be the same as complex organisms? Why?

2317.

Which of these is/are called accessory pigment(s)?

Answer»

Which of these is/are called accessory pigment(s)?



2318.

The air in which of these is expected to be most polluted?a. A high mountain peakb. A wild life sanctuaryc. A farmlandd. An industrial town

Answer» The air in which of these is expected to be most polluted?

a. A high mountain peak

b. A wild life sanctuary

c. A farmland

d. An industrial town
2319.

Which of the following is not a feature of flatworms?

Answer»

Which of the following is not a feature of flatworms?


2320.

What is meant by pathogenic

Answer» What is meant by pathogenic
2321.

Triple fusion in angiosperms is a phenomenon that involves fusion of

Answer»

Triple fusion in angiosperms is a phenomenon that involves fusion of


2322.

Which one of these amino acid cannot be synthesized in our body?

Answer»

Which one of these amino acid cannot be synthesized in our body?


2323.

explain Light and dark reaction in brief and its place of occurenc

Answer» explain Light and dark reaction in brief and its place of occurenc
2324.

Do mammals maintain a constant body temperature?

Answer»

Do mammals maintain a constant body temperature?

2325.

how many valves are present in complete alimentry canal of human

Answer» how many valves are present in complete alimentry canal of human
2326.

Explain the physiology of urine formation

Answer» Explain the physiology of urine formation
2327.

What are the factors affecting the functioning of kidneys?

Answer»

What are the factors affecting the functioning of kidneys?

2328.

Question 52Give reasons for(a) Meristematic cells have a prominent nucleus and dense cytoplasm but they lack a vacuole.(b) Intercellular spaces are absent in sclerenchymatous tissues. (c) We get a crunchy and granular feeling when we chew pear fruit.(d) Branches of a tree move and bend freely in high wind velocity.(e) It is difficult to pull out the husk of a coconut tree.

Answer»

Question 52

Give reasons for


(a) Meristematic cells have a prominent nucleus and dense cytoplasm but they lack a vacuole.

(b) Intercellular spaces are absent in sclerenchymatous tissues.



(c) We get a crunchy and granular feeling when we chew pear fruit.

(d) Branches of a tree move and bend freely in high wind velocity.

(e) It is difficult to pull out the husk of a coconut tree.



2329.

The two synergid cells and a female gamete/egg cell formed at the micropylar end is collectively called as_______

Answer»

The two synergid cells and a female gamete/egg cell formed at the micropylar end is collectively called as_______


2330.

What is triple antigen? Mention the disease which can be prevented by using the antigen.

Answer» What is triple antigen? Mention the disease which can be prevented by using the antigen.


2331.

Question 14How does the cork act as a protective tissue?

Answer»

Question 14

How does the cork act as a protective tissue?



2332.

Which of the following are the correct terms used for the group of organisms mentioned below? 1. Grass, Fern, Moss 2. Lion, Cow, Rat 3. Bacteria, Fungi

Answer»

Which of the following are the correct terms used for the group of organisms mentioned below?

1. Grass, Fern, Moss

2. Lion, Cow, Rat

3. Bacteria, Fungi


2333.

Complete the given classification as shown in the examples:

Answer»

Complete the given classification as shown in the examples:



2334.

Name the gas which has the highest percentage in air.

Answer»

Name the gas which has the highest percentage in air.

2335.

Immunodeficiency syndrome develops in the disease called ___

Answer»

Immunodeficiency syndrome develops in the disease called

___
2336.

The microorganism in the picture is___ . It is the causative agent of sleeping sickness.

Answer»

The microorganism in the picture is___ . It is the causative agent of sleeping sickness.

2337.

The first vaccine was prepared by

Answer»

The first vaccine was prepared by


2338.

Plasmolysis occurs due to:-

Answer»

Plasmolysis occurs due to:-



2339.

What is the name of the larva of cephalochordata?

Answer» What is the name of the larva of cephalochordata?
2340.

Which of the following cannot be a stimulus?

Answer»

Which of the following cannot be a stimulus?


2341.

We know that ozone is formed when uv r adiations fall on earth and it split molecular from of oxygen and the atomic oxygen try to became again molecular by this process ozone is formed so why scientists are not forming ozone by the same process

Answer» We know that ozone is formed when uv r adiations fall on earth and it split molecular from of oxygen and the atomic oxygen try to became again molecular by this process ozone is formed so why scientists are not forming ozone by the same process
2342.

Is plasma mebrane living or dead ?

Answer»

Is plasma mebrane living or dead ?

2343.

Which of the following belongs to nematodes?

Answer»

Which of the following belongs to nematodes?


2344.

Label component A and B.

Answer»

Label component A and B.


2345.

What would Mike see, if he viewed the ducts of the salivary gland through a microscope?

Answer»

What would Mike see, if he viewed the ducts of the salivary gland through a microscope?


2346.

Crossing between two different species of the same genus is called ___ hybridisation.

Answer»

Crossing between two different species of the same genus is called

___

hybridisation.

2347.

The number of chromosomes is reduced to half in _____.

Answer»

The number of chromosomes is reduced to half in _____.


2348.

________ is a muscular partition that helps in breathing by contracting and flattening, thereby increasing the volume of thoracic cavity.

Answer» ________ is a muscular partition that helps in breathing by contracting and flattening, thereby increasing the volume of thoracic cavity.
2349.

Distinguish between flower and inflorescence

Answer»

Distinguish between flower and inflorescence

2350.

Which of the following is not an advantage of separating wastes?

Answer»

Which of the following is not an advantage of separating wastes?