Which of the following organisms show external fertilization?
I. Pigeon
II. Frog
III. Fish
IV. Lizard
Select the answer using the code given below:
II and III only
External fertilization occurs outside the body, typically in water. Frogs and fish release eggs and sperm into water where fertilization takes place, making them external fertilizers. Pigeons (birds) and lizards (reptiles) are land-adapted amniotes with internal fertilization. Hence, only II and III show external fertilization.
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