Animal Kingdom Overview - Competitive Exam Level
Q. What is the main purpose of the circulatory system?
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A.
To produce hormones
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B.
To transport blood and nutrients
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C.
To facilitate digestion
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D.
To provide structural support
Solution
The main purpose of the circulatory system is to transport blood, nutrients, gases, and waste products throughout the body.
Correct Answer: B — To transport blood and nutrients
Q. What is the term for the evolutionary process by which species adapt to their environment?
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A.
Natural selection
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B.
Mutation
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C.
Genetic drift
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D.
Speciation
Solution
Natural selection is the evolutionary process by which species adapt to their environment, favoring traits that enhance survival and reproduction.
Correct Answer: A — Natural selection
Q. What type of symmetry do most echinoderms exhibit?
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A.
Bilateral symmetry
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B.
Radial symmetry
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C.
Asymmetry
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D.
Spherical symmetry
Solution
Most echinoderms exhibit radial symmetry, particularly as adults, allowing them to interact with their environment from multiple directions.
Correct Answer: B — Radial symmetry
Q. Which of the following is a primary function of the skeletal system?
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A.
Production of hormones
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B.
Support and protection
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C.
Digestion of food
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D.
Respiration
Solution
The primary function of the skeletal system is to provide support and protection for the body's organs and tissues.
Correct Answer: B — Support and protection
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