LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The European garden snails that live in fields and hedges have yellow shells with stripes, whereas those that live in wooded habitats have brown shells without stripes. Why does natural selection favor genetic variation among European garden snails occupying different habitats?
A
It helps the snails avoid being seen by predators.
B
It helps the snails adapt to different feeding behaviors.
C
It helps the snails maintain a constant body temperature.
D
It helps the snails limit themselves to a particular habitat.
Explanation: 

Detailed explanation-1: -Why does natural selection favor genetic variation among European garden snails occupying different habitats? It helps the snails avoid being seen by predators.

Detailed explanation-2: -Researchers have suggested that different genetic combinations resulted in different physical appearances. What is an advantage of genetic variations in the grove snail species? They decrease the number of predators of the species.

Detailed explanation-3: -Which adaptation favors the survival of an organism living in the extremely cold tundra, and why? Large ears; they help radiate heat away from the body.

Detailed explanation-4: -Genetic Variation is Essential for Evolution by Natural Selection. For natural selection to occur, a population must have a wide variety of individuals with different traits. For example, natural selection would not influence fish body color if all individuals in a population were exactly the same color.

There is 1 question to complete.