MDCAT Biology Chapter 8 MCQ Test With Answer for (Evolution)

While preparing for the test, the students should allocate the proper time to all the topics. The candidates who intend to appear in the MDCAT must solve the chapter-wise MCQs provided on this platform. Through solving the MCQs, the students can better understand the topic and learn the topics for a longer time.

MCQ's Test For MDCAT Biology Chapter 8 MCQ's Test

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MDCAT Biology Chapter 8 MCQ's Test

00:00
Question # 1

A biotic components includes the components like:

Question # 2

What are the environmental buffers?

Question # 3

Excessive ploughing of lands in arid regions results in the development of

Question # 4

In each case succession begins with few hard invaders called:

Question # 5

______ is a change in the community structure of an ecosystem over a period of time

Question # 6

Modern man has been on this planet for about

Question # 7

______ are autotrophic organisms

Question # 8

Consumers that prey other animals are known as

Question # 9

Animals feed on green plants and grasses are called

Question # 10

Pyramid always starts at

Question # 11

Green house effect, acid rain headaches and coughs are related to which of the followings?

Question # 12

Plant and animals replace the earlier ones in a way of

Question # 13

An association between two organisms, which brings benefit to both the organisms is called:

Question # 14

Salt water ocean and sea are the largest ecosystem which cover __________ of earth surfaces.

Question # 15

Layer of earth where life is present is called

Question # 16

The average rainfall in desert ecosystem is:

Question # 17

Biotic components includes all the

Question # 18

A symbiotic association between a fungus and the roots of higher plants is known as

Question # 19

Life on earth is affected by both

Question # 20

When bacteria in soil oxidize ammonia or ammonium ions this is called:

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MCAT Biology Chapter 8 Important MCQ's

Sr.# Question Answer
1 In an ecosystem after succession, a new invaders are called
A. Pioneers
B. Predecessors
C. Climax community
D. None of these
2 The lake ecosystem can be divided into ______ number of zones:
A. Two
B. Three
C. Four
D. Five
3 Dominant species of mammals in grassland are the:
A. Omnivores
B. Herbivores
C. Carnivores
D. Insectivores
4 The bacteria in the root nodules fix ______ in soil air, converting it to amino acids
A. Nitrogen
B. Phosphorus
C. Sulphur
D. Iron
5 It is the study of the relationship of animals (organisms) to their environment
A. Ecology
B. Ecosystem
C. Physiology
D. Mycology
6 Due to the trampling of the soil layer by the hooves of grazing animals the rain water will:
A. Penetrate deep into the soil
B. Not penetrate this soil
C. Stop on the soil
D. Do not affect this layer of  the soil
7 How plants are deprived of nutrients by acid rain
A. Due to teaching
B. Due to fall in pH
C. Acid creates a barrier to absorption
D. Unknown cause
8 About ______% if the total energy from the sun is trapped by the producers in an ecosystem
A. 0.5
B. 1.0
C. 1.5
D. 2.0
9 Hemophilia is a ________ disease
A. Heritable
B. Genetic
C. Nutritional deficiency
D. Both a and b
10 Decomposers form _______ trophic level
A. First
B. Second
C. Third
D. All

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