In some organism formation of new organisms from female gamete without fertilisation is known as
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Parthenogenesis
Option (1) Parthenogenesis — Correct. In some organisms the female gamete develops into a new organism without fertilisation; this is called parthenogenesis. It is seen in rotifers, honeybees, some lizards and birds such as the turkey.
Note: This question was set from Chapter 1, Reproduction in Organisms, of the pre-rationalised NCERT book. The topic is also in the current NCERT book: Chapter 4, Principles of Inheritance and Variation (4.6.2 Sex Determination in Honey Bee), where an unfertilised egg develops into a male (drone) by parthenogenesis. Both extracts are given below.
NCERT Extract (current book, Chapter 4, Principles of Inheritance and Variation):
Sex Determination in Honey Bee – “… An offspring formed from the union of a sperm and an egg develops as a female (queen or worker), and an unfertilised egg develops as a male (drone) by means of parthenogenesis. …”
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.”