Question

If an endosperm of an angiosperm contains 24 chromosomes, the number of chromosomes in each cell of the root will be
1. 4
2. 8
3. 16
4. 24

Answer 1

Correct Answer - Option 3 : 16

Concept:

• The endosperm is the food-laden tissue formed during the development of angiospermous seed which provides essential nutrients to the growing embryo and also to the young seedling at the time of seed germination. 
• In angiosperms, the endosperm develops from a triploid (3n) primary endosperm nucleus which is formed as a result of the fusion of a male gamete with the secondary nucleus of the central cell.
• Thus, Endosperm is a triploid (3n), where n = ploidy level

  

• Now, according to the question
• 3n = 24, then
• n ⇒ 24/3 = 8
• Each root cell is a diploid i.e. 2n
• Therefore, the number of chromosomes in each cell of the root ⇒ 2 x 8 = 16