Question

Consider the following statements (a-d) each with one or two blanks:
(a) Bears go into (1) during winter to (2) cold weather.
(b) A conical age pyramid with a broad base represents (3) human population.
(c) A wasp pollinating a fig flower is an example of (4).
(d) An area with high levels of species richness is known as (5).

• A. 3-stable, 4-commensalism, 5-marsh
• B. 1-aestivation, 2-escape, 3-stable 5-mutualism
• C. 3-expanding, 2-commensalism, 5-biodiversity
• D. 1-hibernation, 2-escape, 3-expanding, 5-hotspot

Answer 1

The correct option is D 1-hibernation, 2-escape, 3-expanding, 5-hotspot

Bears and hibernation
Bears adapt themselves to the winter season by going through hibernation. Hibernation is the staying indoors of animals to reduce energy expenditure in very low temperatures.
So the statement will read Bears go into (1)hibernation during winter to (2)escape cold weather.

The conical age pyramid
The expanding population of humans is represented by a conical age pyramid with a broad base. It represents that most of the individuals of the population are in the young age group.
So the statement will read-
A conical age pyramid with a broad base represents (3)expanding human population.

Example of mutualism
Wasps pollinate the fig flower and in return, the flower gives it space to lay eggs. In this way, both the species are getting benefited which represents the mutualistic relationship between them.So the statement will read
A wasp pollinating a fig flower is an example of (4)mutualism.

Hotspots
Hotspots are areas with very high levels of species richness or biodiversity and a high degree of endemism.
So the statement will read
An area with high levels of species richness is known as a (5)hotspot.