Which of the following is not an example of mutualism?
(a) Man and intestinal bacteria
(b) Water hyacinth and fish
(c) Fish and sea anemone
(d) Lichen and blue green algae
WBBSE
Class X
Life Science
01 (e) Locomotion as a type of response in Animals
01 Mark
2025
(b) Water hyacinth and fish
Explanation:
Mutualism is a relationship in which both partners benefit. Man and intestinal bacteria, fish and sea anemone, and lichen and blue green algae are all mutualistic associations. Water hyacinth and fish are not truly mutualistic; the plant often depletes oxygen, harming fish.
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