A fish kept in polluted water develops damaged scales and skin. The first affected function is likely:
Correct Answer: A. Barrier protection against environment
MCQ Collection
Animal Form and Function-I MCQs
Practice Animal Form and Function-I questions with answers and explanations.
A migrating fish senses changes in water current and nearby movement without touching the object. This ability is mainly due to the:
Correct Answer: A. Lateral line system
An animal needs fast escape movement from a predator. Skeletal muscle is suitable because it is usually:
Correct Answer: A. Voluntary, striated, and capable of rapid contraction
A fish scale under a microscope shows protective layers. In fish, scales are important because they:
Correct Answer: A. Protect the body while allowing flexible swimming
A zoologist says movement requires integration of support, muscle, and control. The control component mainly comes from the:
Correct Answer: A. Nervous system
A student observes that muscles cannot push, they pull. Movement in opposite directions therefore requires:
Correct Answer: A. Pairs or groups of antagonistic muscles
A lateral-line neuromast is stimulated when water moves across hair cells. The stimulus being detected is:
Correct Answer: A. Mechanical displacement
A bivalve closes its shell tightly when disturbed. The structure most directly responsible is the:
Correct Answer: A. Adductor muscle
A mammal raises its hair when cold. This response helps by:
Correct Answer: A. Trapping insulating air near the skin
A muscle fiber receives no nerve impulse. The expected result is:
Correct Answer: A. Reduced or absent contraction
If an animal loses joint lubrication, its movement becomes painful. This happens because joints require:
Correct Answer: A. Reduced friction between moving surfaces
An insect wing beats rapidly during flight. The movement is made possible because muscles act against:
Correct Answer: A. The exoskeleton and wing joints