Question

4. If a capsule cell of Funaria has 10 chromosomes
then number of chromosomes in its zygote and a
rhizoid cell are respectively
(1) 10,5
(2) 5, 10
(3) 5,5
(4) 10,10​

Answer 1

Answer:

the no. of chromosomes are 5,10

Answer 2

The correct answer is (1) 10, 5.

Explanation:

• Funaria is the genus including the Moss species.
• They undergo alternation of generations in their life cycle, which includes,

1. Gametophytic generation (n) - Haploid stage.
2. Sporophytic generation (2n) - Diploid stage.

• The zygote is formed by the fusion of the egg and the antherozoid produced by the gametophyte. It initiates the sporophytic generation, hence it has diploid set of chromosomes, that is, 10.
• The rhizoids are root-like structures responsible for water and nutrient absorption and are present at the base of the mature gametophyte, hence they have haploid set of chromosomes, that is, 5.