Question:
Trichogrammatids are parasitic on insects at which stage?
Trichogrammatids are parasitic on insects at which stage?
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Trichogramma:
- Egg parasitoids.
- Used in biological control of lepidopteran pests.
- Mass-reared and released in fields.
- Egg parasitoids.
- Used in biological control of lepidopteran pests.
- Mass-reared and released in fields.
Updated On: Aug 27, 2026
- Egg
- Larva
- Pupa
- Adult
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of biological control agents.
Step 2: Detailed Explanation:
Trichogrammatids (Trichogramma spp.) are egg parasitoids.
They lay their eggs inside the eggs of other insects (hosts).
The eggs are parasitized, preventing the host from hatching.
Larva (B): Not the target stage.
Pupa (C): Not the target stage.
Adult (D): Not the target stage.
Thus, Trichogrammatids are parasitic on insect eggs.
Step 3: Final Answer:
Thus, Trichogrammatids are parasitic on insect eggs, which corresponds to option (A).
[0.5cm]
This question tests knowledge of biological control agents.
Step 2: Detailed Explanation:
Trichogrammatids (Trichogramma spp.) are egg parasitoids.
They lay their eggs inside the eggs of other insects (hosts).
The eggs are parasitized, preventing the host from hatching.
Larva (B): Not the target stage.
Pupa (C): Not the target stage.
Adult (D): Not the target stage.
Thus, Trichogrammatids are parasitic on insect eggs.
Step 3: Final Answer:
Thus, Trichogrammatids are parasitic on insect eggs, which corresponds to option (A).
[0.5cm]
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