Human Reproduction Question 64
Question: Population termed r-strategists [MH CET 2003]
Options:
A) Have J-shaped growth curves
B) Have type III survivorship curves
C) Are usually pioneer species in ecological succession
D) All of these are correct.
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Answer:
Correct Answer: A
Solution:
During a short period of time, some populations produce many offspring which require little care.
Therefore, these populations usually have a survivorship curve similar to type III.
These tend to have J-shaped growth curves until some environmental change causes them to decline, usually within a short time.
From an evolutionary point of view, such species have undergone selection to maximize their rate of natural increase and for this reason they are termed as r-strategies.
BETA
