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Degenerated or underdeveloped useless organs present in an organism's body are called:
AVital organs
BSensory organs
CEffector organs
DVestigial organs
Answer & Solution
Correct answer: D. Vestigial organs
1. Some organs become useless as the environment of an organism changes.
2. Such degenerated or underdeveloped useless organs persist in the body.
3. These are called vestigial organs.
4. Vital organs are essential for life, so they are ruled out.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 1 "Heredity and Evolution", p.14_
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