Oestrous Cycle

Q. In which of the following organisms oestrus cycle does not take place?

1. Lion
2. Rabbit
3. Rat
4. Monkey

Q. Assertion: In non-primate mammals, cyclical changes that occur during reproduction is called oestrus cycle whereas in primates, it is called the menstrual cycle.
Reason: The females of placental mammals exhibit cyclical changes in the activities of ovaries and accessory ducts as well as hormones during the reproductive phase.

1. If both assertion and reason are true and the reason is the correct explanation of assertion.
2. If both assertion and reason are true but the reason is not the correct explanation of assertion.
3. The assertion is true but the reason is false.
4. Both assertion and reason are false.

Q. In non-primate mammals like cow, sheep, rat, dog etc., cyclical changes occurring during their reproductive phase is called

1. Growth cycle
2. Oestrus cycle
3. Menstrual cycle
4. Gestation period

Q. Assertion: In non-primate mammals, cyclical changes that occur during reproduction is called oestrus cycle whereas in primates, it is called the menstrual cycle.
Reason: The females of placental mammals exhibit cyclical changes in the activities of ovaries and accessory ducts as well as hormones during the reproductive phase.

1. If both assertion and reason are true and the reason is the correct explanation of assertion.
2. If both assertion and reason are true but the reason is not the correct explanation of assertion.
3. The assertion is true but the reason is false.
4. Both assertion and reason are false.

Q. In non-primate mammals the cyclical changes that occur during reproductive phase are called __________.

1. menstrual cycle
2. oestrus cycle
3. puberty
4. None of the above

Q.

In total, how many of the following animals show oestrus cycle and menstrual cycle respectively?

Cow, Human, Gorilla, Tiger, Deer, Dog, Monkey, Rat and Sheep.

1. 6 and 3

2. 4 and 5

3. 2 and 7

4. 3 and 6

Q.

The _______ cycle is the main reproductive cycle of non-primate vertebrates.

Q. In non-primate mammals like cow, sheep, rat, dog etc., cyclical changes occurring during their reproductive phase is called

1. Growth cycle
2. Oestrus cycle
3. Menstrual cycle
4. Gestation period

Q.

In total, how many of the following animals show oestrus cycle and menstrual cycle respectively?

Cow, Human, Gorilla, Tiger, Deer, Dog, Monkey, Rat and Sheep.

1. 6 and 3

2. 4 and 5

3. 2 and 7

4. 3 and 6