Question:
In general, there are three types of resistance to insects are recognized. One of them is specifying that the insects are killed/injured from completing its normal life cylce after feeding on a tree and it is called as ____.
In general, there are three types of resistance to insects are recognized. One of them is specifying that the insects are killed/injured from completing its normal life cylce after feeding on a tree and it is called as ____.
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Antixenosis = Insect doesn't like the plant "guest/host."
Antibiosis = Plant is "poisonous" to the insect.
Tolerance = Plant just "ignores" the insect damage.
Antibiosis = Plant is "poisonous" to the insect.
Tolerance = Plant just "ignores" the insect damage.
Updated On: Aug 7, 2026
- Vulnerable
- Tolerance
- Non-preference
- Antibiosis
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Question:
This question pertains to Host Plant Resistance (HPR) in forest entomology. It asks for the specific term where the plant negatively affects the biology of the insect.
Detailed Explanation:
• According to Painter (1951), there are three main mechanisms of resistance:
• Non-preference (Antixenosis): The plant has traits (like smell or hairiness) that discourage the insect from landing, laying eggs, or feeding.
• Tolerance: The plant can support a high population of insects and still yield well without significant damage.
• Antibiosis: This is the mechanism described in the question. The plant contains chemical or physical factors that harm the insect. After feeding, the insect may experience high mortality, reduced size, abnormal development, or failure to reproduce. It literally means "against life."
Step 2: Final Answer:
The mechanism that causes injury or death to the insect upon feeding is Antibiosis.
This question pertains to Host Plant Resistance (HPR) in forest entomology. It asks for the specific term where the plant negatively affects the biology of the insect.
Detailed Explanation:
• According to Painter (1951), there are three main mechanisms of resistance:
• Non-preference (Antixenosis): The plant has traits (like smell or hairiness) that discourage the insect from landing, laying eggs, or feeding.
• Tolerance: The plant can support a high population of insects and still yield well without significant damage.
• Antibiosis: This is the mechanism described in the question. The plant contains chemical or physical factors that harm the insect. After feeding, the insect may experience high mortality, reduced size, abnormal development, or failure to reproduce. It literally means "against life."
Step 2: Final Answer:
The mechanism that causes injury or death to the insect upon feeding is Antibiosis.
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