Q.

Given below are two statements: One is labelled Assertion(A) and other is labelled Reason(R).

Assertion(A) : The life cycle of a plant  exhibits two different phases – haploid gametophyte and diploid sporophyte.

Reason(R) : In plants, both haploid and diploid cells are capable of dividing by mitosis.

In the light of above statements, choose the correct answer from the options given below.

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a

Both (A) and (R) are true and the (R) is the correct explanation of the (A).

b

(A) is true, but (R) is false.

c

Both (A) and (R) are false.

d

Both (A) and (R) are true, but (R) is not the correct explanation of the (A).

answer is A.

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Detailed Solution

The plant life cycle exhibits alternation of generation where the diploid multicellular sporophyte forms, and haploid haploids are reduced to gametophyte celled gametophyte by meiosis.

The diploid sporophyte undergoes sporic meiosis to form haploid spores. Spores divide by mitosis to form a haploid gametophyte.

The haploid plant body produces gametes by mitosis. Gametes undergo fusion.

Zygote is the product of fertilization.

Zygote undergoes mitosis and forms diploid sporophyte and is formed in plants by mitosis.

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Given below are two statements: One is labelled Assertion(A) and other is labelled Reason(R).Assertion(A) : The life cycle of a plant  exhibits two different phases – haploid gametophyte and diploid sporophyte.Reason(R) : In plants, both haploid and diploid cells are capable of dividing by mitosis.In the light of above statements, choose the correct answer from the options given below.