Comprehension : Comprehension

Q 442 / 466

UPSC CSE Prelims 2011

In spring, polar bear mothers emerge from dens with three month old cubs. The mother bear has fasted for as long as eight months but that does not stop the young from demanding full access to her remaining reserves. If there are triplets, the most persistent stands to gain an extra meal and it may have the meal at the expense of others; The smallest 'of the litter forfeits many meals to stronger siblings. Females are protective of their cubs but tend to ignore family rivalry over food. In 21 years of photographing polar bears, I've only once seen the smallest of triplets survive till autumn.

Female polar bears give birth during

EXPLANATION

Correct Option (D)

The passage states that polar bear mothers emerge from their dens in spring with three-month-old cubs. If the cubs are three months old in spring, their birth must have occurred approximately three months prior to the onset of spring. This timeline places the birthing period within the winter season (typically December to January).

Incorrect Options:

Spring: The text indicates that spring is the season when mothers emerge with already three-month-old cubs, not when the births occur.

Summer and Autumn: These seasons follow spring. If births occurred in summer or autumn, the cubs would be considerably older than three months by the time of their emergence in spring, which contradicts the information provided in the passage.