Test: Mechanism Of Evolution


5 Questions MCQ Test Science Class 10 | Test: Mechanism Of Evolution


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This mock test of Test: Mechanism Of Evolution for Class 10 helps you for every Class 10 entrance exam. This contains 5 Multiple Choice Questions for Class 10 Test: Mechanism Of Evolution (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Mechanism Of Evolution quiz give you a good mix of easy questions and tough questions. Class 10 students definitely take this Test: Mechanism Of Evolution exercise for a better result in the exam. You can find other Test: Mechanism Of Evolution extra questions, long questions & short questions for Class 10 on EduRev as well by searching above.
QUESTION: 1

Which of the following is not a characteristic of Genetic drift ?

Solution:

Genetic drift is a mechanism of evolution in which allele frequencies of a population change over generations due to chance (sampling error).

Genetic drift occurs in all populations of non-infinite size, but its effects are strongest in small populations.

Genetic drift may result in the loss of some alleles (including beneficial ones) and the fixation, or rise to 100\%100%100, percent frequency, of other alleles.

Genetic drift can have major effects when a population is sharply reduced in size by a natural disaster (bottleneck effect) or when a small group splits off from the main population to found a colony (founder effect).

QUESTION: 2

The initial function of feathers is to provide:

Solution:

The primary function of the flight feathers is to aid in the generation of both thrust and lift, thereby enabling flight. The flight feathers of some birds have evolved to perform additional functions, generally associated with territorial displays, courtship rituals or feeding methods.

QUESTION: 3

What will happen if change occurs in the reproductive tissues of an organism ?

Solution:

The changes occurring in the reproductive tissues of an organism are inherited from one generation to another.

QUESTION: 4

Genetic drift is

Solution:

Genetic drift is the change in the frequency of an allele in a population due to random sampling and the random events that influence the survival and reproduction of those individuals.

QUESTION: 5

In humans, the sex of children is determined by

Solution:

The sex of the child is determined in human beings by the chromosomes like female have two X chromosomes XX and male have one X chromosome and one Y chromosome XY. So in this way, sex is determined

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