Multiple choice

If the number of chromosomes in the pollen grain of a maize plant is X, what will be the number of chromosomes in endosperm?

  1. 2X

  2. X

  3. 3X

  4. 4X
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pollen grains are haploid (n), so if their chromosome number is X, then n = X. In angiosperms, the endosperm is formed by triple fusion (one male gamete plus two polar nuclei), making it triploid (3n). Therefore, the number of chromosomes in the endosperm will be 3X.

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