Parthenogenesis does not occur in :

The correct answer is Option (4) → Mammals

In parthenogenesis the female gamete develops into a new organism without fertilisation.

Option (1) Rotifers — Parthenogenesis occurs.

Option (2) Honey bees — Parthenogenesis occurs. Drones develop from unfertilised eggs.

Option (3) Lizards — Parthenogenesis occurs. NCERT names some lizards.

Option (4) Mammals — Parthenogenesis does not occur. Mammals reproduce only by fertilisation; NCERT does not list them.

Note: This question is from Chapter 1, Reproduction in Organisms, of the pre-rationalised NCERT book. This chapter is not in the present NCERT book (2026-27). The extract below is from the pre-rationalised edition.

NCERT Extract (Pre-rationalised edition, Chapter 1, Reproduction in Organisms):
Fertilisation – “… However, it has to be mentioned here that in some organisms like rotifers, honeybees and even some lizards and birds (turkey), the female gamete undergoes development to form new organisms without fertilisation. This phenomenon is called parthenogenesis.”