In the following graph, which of the expressions (a through d) of the exponential growth equation should be increased in order for curve 1 to become more like curve 2?

N
d
b
(b – d)

What does the shape of the given age pyramids(a to c) reflect about the growth status of populations ?

I-Declining; II-Stable; III-Expanding
I-Stable; II-Expanding; III-Declining
I-Expanding; II-Stable; III-Declining
I-Declining; II-Expanding; III-Stable

Which one of the following is not a parasitic adaptation?

Loss of unnecessary sense organs
Development of adhesive organs
Loss of digestive organs
Loss of reproductive capacity

Solution

In Parasitism, one species (parasite) is benefitted and the other (host) is harmed. Parasites have very high re-production capacity. The life cycles of parasites are of-ten complex, involving one or two intermediate hosts or vectors to facilitate parasitisation of its primary host.

The age pyramid with broad base indicates

High percentage of young individuals
High percentage of old individuals
Low percentage of young individuals
A stable population

Solution

Age pyramid is a graphic representation of different age groups of population with pre-reproductive groups at the base,reproductive ones in the middle and post-reproductive groups at the top. In Triangular age pyramid, the number of pre-reproduction individual is very large while reproductive are moderate and post-reproductive are fewer.

UnAttempted

0

Attempted

0

Correct

0

Wrong

0

Complete