Question

Choose the incorrect statement.

• A. The end of juvenile/vegetative phase marks the beginning of the reproductive phase.
• B. Many mammals are reproductively active throughout their reproductive phase and hence are called continuous breeders.
• C. In monkeys and apes, the cyclical changes that occur during reproductive phase are called oestrus cycle.
• D. Adventitious buds arise from the notches present at margins of leaves of Bryophyllum.

Answer 1

The correct option is C In monkeys and apes, the cyclical changes that occur during reproductive phase are called oestrus cycle.

Monkeys and apes are the primates and the cyclical changes that occur during reproductive phase in primate females is called the menstrual cycle. Oestrus cycle is the set of cyclical changes that occur in non-primate females during reproduction.

Juvenile/vegetative phase is the period of growth and maturity before the organism attains reproductive maturity. The end of juvenile/vegetative phase marks the beginning of the reproductive phase.

Adventitious buds are the vegetative propagules of Bryophyllum. They arise from the notches present at margins of leaves. Vegetative propagules are units of vegetative propagation capable of giving rise to a new plant.

Continuous breeders are those animals that can reproduce throughout the year after attaining reproductive maturity. They include humans and apes (chimpanzees, gorillas).