Mitosis maintains chromosome number and occurs in both diploid and haploid mother cells, while meiosis halves it and happens exclusively in diploid cells. The correct option is (D) P-F, Q-T, R-T, S-F, as it accurately reflects these processes in cell biology exams like NEET.

Correct Answer

Option (D) P-F, Q-T, R-T, S-F is correct.​

P states mitosis occurs exclusively in diploid mother cells—this is false, as mitosis happens in both diploid (e.g., somatic cells) and haploid cells (e.g., gametophyte tissues in plants, drones in bees).​

Q states mitosis occurs in both diploid and haploid mother cells—this is true, since mitosis preserves chromosome number (2n to 2n or n to n) for growth and asexual reproduction across organisms.​

Why Other Options Fail

• Option (A) P-T, Q-F, R-T, S-F: Incorrect because P wrongly claims mitosis is diploid-only, and Q is marked false despite mitosis occurring in haploid cells too.​

• Option (B) P-F, Q-T, R-F, S-T: Wrong as R is true (meiosis starts in diploid cells to produce haploid gametes), and S falsely suggests meiosis in haploid cells, which can’t reduce chromosomes further.​

• Option (C) P-T, Q-F, R-F, S-T: Fails doubly—P ignores haploid mitosis, Q is true but marked false, R wrongly denies diploid exclusivity for meiosis.​

Key Cell Division Facts

Mitosis involves one division for identical daughters, vital for tissue repair.​
Meiosis has two divisions (I reduces homologs, II splits sisters) solely from diploid germ cells.​
Understand these for exams: Mitosis = versatile (haploid/diploid); Meiosis = gamete-specific (diploid only).​