In Pinus, the pollen grain has 6 chromosomes. What is the number of chromosomes in its endoperm

Options

A. 12
B. 18
C. 6
D. 24

Answer

C

Explanation

(c) In gymnosperms (Pinus) both the pollen grains and endosperm are haploid structure, formed before fertilisation. If the pollen grain has haploid number of chromosome equal to 6, then its endosperm will also have the same number of chromosome, i.e. 6.