Question

Which of the following statements is not correct regarding sexuality in organisms?

• A. When both male and female flowers are present on the same plant, the condition is said to be monoecious and is present in cucurbits and coconuts
• B. When both male and female flowers are present on the separate plants, the condition is said to be dioecious and is present in papaya and date palms
• C. In earthworm, both male and female sex organs are present in the same individual and therefore, self-fertilisation occurs in them
• D. Cockroach is an unisexual animal and exhibit sexual dimorphism

Answer 1

Answer: (C)

In earthworm, both male and female sex organs are present in the same individual and therefore, self-fertilisation occurs in them

Cross-fertilization occurs in many hermaphrodite animals as in earthworm. It is due to the fact that their male and female reproductive organs mature at different times.

Thus, the correct answer is 'In earthworm, both male and female sex organs are present in the same individual and therefore, self-fertilization occurs in them.'