Concept: This question tests the understanding of ploidy levels in different plant tissues, specifically in angiosperms.

Why (B) is correct:

1. The endosperm in angiosperms is typically triploid (3n), formed by the fusion of two polar nuclei (n+n) and one male gamete (n).
2. Given that the endosperm has 24 chromosomes, we can write: $3n=24$.
3. Therefore, the haploid number $n=24/3=8$.
4. Root tip cells are somatic cells and are diploid (2n).
5. So, the number of chromosomes in root tip cells will be $2n=2\times 8=16$.

Why other options are wrong:

• (A) 8: This is the haploid (n) number, not the diploid (2n) number of root tip cells.
• (C) 24: This is the triploid (3n) number of the endosperm.
• (D) 32: This would imply a haploid number of 10.67, which is incorrect.

Common Mistake: Students often confuse the ploidy levels of different tissues (e.g., endosperm, zygote, gamete, somatic cells) or miscalculate the 'n' value.

NEET Tip: Remember the ploidy levels: Gamete = n, Zygote = 2n, Embryo = 2n, Root/Stem/Leaf cells = 2n, Endosperm = 3n (in most angiosperms).

Correct Answer: (B)