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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.

Two organisms are good friends and live together. One provides shelter, water and nutrients while the other prepares and provides food. Such an association of organisms is termed as

A saprophyte
B parasite
C autotroph
D symbiosis.

Which of these options are not functions of ribosomes?
(i) It helps in manufacture of protein molecules.
(ii) It helps in manufacture of enzymes.
(iii) It helps in manufacture of hormones.
(iv) It helps in manufacture of starch molecules.

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

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.

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.

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.

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.

Assertion : Rabi crops are sown during June or July and harvested after monsoon.
Reason : Kharif crops are sown at the beginn-ing of the winter season (October to December) and harvested by March and April.
In each of the following questions, a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements, mark the correct answer as

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.

The steps required for conversion of kitchen garbage into manure are given below in a jumbled form.
(i) Put garbage in a pit.
(ii) Cover the bottom of the pit with sand.
(iii) Cover the pit loosely with a gunny bag or grass.
(iv) Add worms.
Which of the following shows the correct sequence of the above steps?

A (ii); (i); (iii); (iv)
B (i); (ii); (iii); (iv)
C (ii) ; (iv); (i); (iii)
D (iv); (i); (ii); (iii)

Which of the following figures has largest perimeter?

A
B
C
D