A student describes non-muscular movement in protozoans. The best example is:
Correct Answer: A. Amoeboid movement by pseudopodia
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All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
A vertebrate bone acts as a lever during movement. The force that moves this lever comes from:
Correct Answer: A. Muscle contraction
A lab assistant compares ligaments and tendons. Ligaments are best described as structures that:
Correct Answer: A. Connect bone to bone at joints
An animal bends a limb at a joint when one muscle contracts and the opposing muscle relaxes. This illustrates:
Correct Answer: A. Antagonistic muscle action
A student compares annelids and arthropods. An annelid hydrostatic skeleton differs from an arthropod exoskeleton because it:
Correct Answer: A. Uses internal fluid pressure instead of a rigid outer cuticle
During a dissection, tendons appear pale and tough. Their composition makes them suitable for:
Correct Answer: A. Strong force transmission
An animal with a hard external covering gains protection but faces a special growth problem. The problem is solved by:
Correct Answer: A. Molting
A fish skeleton and muscles produce side-to-side waves during swimming. The movement is best described as:
Correct Answer: A. Axial locomotion using body bends
If a joint becomes immovable due to fusion of bones, the main function lost is:
Correct Answer: A. Flexibility of movement
A mammal raises its hair when cold. This response helps by:
Correct Answer: A. Trapping insulating air near the skin
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 feather is damaged in a bird, but the bone remains intact. The affected system is mainly the:
Correct Answer: A. Integumentary system