NEET BIOLOGY

ECOLOGY

ORGANISMS AND THE ENVIRONMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is an example of an instinct?
A
a baby bird is taught to fly by its parent
B
a bear hibernates in the winter
C
a dog learns how to roll over
D
a bear learns how to catch a fish
Explanation: 

Detailed explanation-1: -Answer and Explanation: Hibernation is an innate behavior. It is not learned after birth. Animals that hibernate are born with an internal sense, or instinct, that tells them when they need to hibernate.

Detailed explanation-2: -A) Bears hibernate during winter, but aren’t sleeping the whole time. Hibernation for bears simply means they don’t need to eat or drink, and rarely urinate or defecate (or not at all). There is strong evolutionary pressure for bears to stay in their dens during winter, if there is little or no food available.

Detailed explanation-3: -Examples of true hibernators are bats, hedgehogs, dormice, marsupials, and snakes. Among birds, some nightjars such as the common poorwill may enter true hibernation. In autumn, before they go into winter hibernation, bats may use temporary torpor as a preparation for hibernation.

Detailed explanation-4: -Hibernation is a period of deep sleep which many animals undergo to conserve their energy. Animals like bears, snails, bats etc. hibernate in a warm place during winters. This helps them to escape from the harsh climatic conditions.

There is 1 question to complete.