AP BIOLOGY

ANIMAL BEHAVIOR

INTRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
____ grow slowly over time, cares for its young over a long period of time and is usually near the carrying capacity of its ecosystem.
A
K-strategists
B
R-strategists
C
Uniform strategists
D
environmentalists
Explanation: 

Detailed explanation-1: -K-selected species, also called K-strategist, species whose populations fluctuate at or near the carrying capacity (K) of the environment in which they reside. Such species make up one of the two generalized life-history strategies posited by American ecologist Robert MacArthur and American biologist Edward O.

Detailed explanation-2: -In the equations describing growth of populations of organisms, r represents the slope of the line representing exponential growth. The letter K represents the carrying capacity of a habitat for members of a given sort of organism.

Detailed explanation-3: -Common examples of k-strategists species include humans, lions and whales.

Detailed explanation-4: -The life history theory behind r-selected species assumes that by having a larger number of offspring, there is a higher chance that at least some will survive to adulthood. Alternatively, K-selected species spend a lot of time and energy rearing only a few offspring.

There is 1 question to complete.