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Subject :Biology    Class : Class 7

Read the following statements with reference to the villi of small intestine.
(i) They have very thin walls.
(ii) They have a network of thin and small blood vessels close to the surface.
(iii) They have small pores through which food can easily pass.
(iv) They are finger-like projections.
Identify those statements which enable the villi to absorb digested food.

A (i), (ii) and (iv)
B (ii), (iii) and (iv)
C (iii) and (iv)
D (i) and (iv)


how does having thin walls help?

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Subject :Biology    Class : Class 7

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Subject :Biology    Class : Class 8

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Subject :Biology    Class : Class 8

Assertion : A bigger organism has a large number of cells than a smaller one.
Reason : The size of cell is related to the size of the organism.
In each of the following questions, a statement of Assertion is given and a corresponding statement of Reason is given just below it. Of the four statements, given below, mark one as the correct answer

A if both Assertion and Reason are true and Reason is the correct explanation of Assertion
B if both Assertion and Reason are true but Reason is not the correct explanation of Assertion
C if Assertion is true but Reason is false
D if both Assertion and Reason are false.


IN THE VIDEO IT SHOWED THAT THE SIZE DEPENDS UPON THE FUNCTIONS OF THE CELL SO THE 1STATEMENT SHOULD BE FALSE

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Subject :Biology    Class : Class 7

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Subject :Biology    Class : Class 9

Ans 1:

Class : Class 10
no options (non of the above) what the hell!!!!!!!!!!!!!!!!!!!!!!!

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Subject :Biology    Class : Class 6

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : During the process of photosynthesis,O2 is taken in and CO2 is given out.
Reason : Photosynthesis is mainly carried out by the stem and branches of a plant.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If assertion is false but reason is true.


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Subject :Biology    Class : Class 6

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : Bear and cockroach are omnivores.
Reason : Bear and cockroach eat both plants and animals.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If assertion is false but reason is true.


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Subject :Biology    Class : Class 7

In each of the following questions, a statement of Assertion (A) is given followed by a corresponding statement of Reason (R) just below it. Of the statements, mark the correct answer as
Assertion : Mistletoe is unable to prepare its own food by photosynthesis.
Reason : Mistletoe is a parasitic plant and does not possess leaves.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If both assertion and reason are false.


i think A should be the answer

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Subject :Biology    Class : Class 7

In each of the following questions, a statement of Assertion (A) is given followed by a corresponding statement of Reason (R) just below it. Of the statements, mark the correct answer as
Assertion : Rate of photosynthesis is affected by several factors such as light temperature, water, carbon dioxide etc.
Reason : Rate of photosynthesis increases with the increase in intensity of light and decreases with the decrease in intensity of light.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If both assertion and reason are false.


I think the answer should be a. if not then please explain here

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