Question:
_____________ not used for preparing plant based insecticides.
_____________ not used for preparing plant based insecticides.
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Remember that "Sola wood" or "Sola pith" is used for decorative art because of its structural lightness, not for chemical protection against insect pests.
Updated On: Jul 21, 2026
- Chrysanthemum cinerariaefolium
- Azadirachta indica
- Derris ferruginea
- Aeschynomene aspera
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Botanical or plant-based insecticides are natural chemicals extracted from plants that act as pest repellents, toxicants, or growth regulators.
These bio-pesticides are preferred in organic farming due to their biodegradable nature and minimal environmental toxicity.
Step 2: Detailed Explanation:
Let us examine the chemical properties and applications of the four species:
- Chrysanthemum cinerariaefolium: The flowers of this plant are the primary source of natural pyrethrins, which are highly effective contact insecticides that target the nervous systems of insects.
- Azadirachta indica (Neem): Neem leaves and seeds contain azadirachtin, a potent tetranortriterpenoid that acts as an antifeedant, repellent, and insect growth regulator.
- Derris ferruginea: The roots of this species contain rotenone, a natural chemical compound used as a broad-spectrum insecticide and piscicide.
- Aeschynomene aspera (Sola pith plant): This is a herbaceous plant that grows in waterlogged and marshy areas. It has highly spongy, light, and fibrous wood (pith) used for making handicrafts, traditional toys, and decorations. It does not contain any notable insecticidal or toxic secondary metabolites.
Therefore, Aeschynomene aspera is not used in the preparation of biopesticides.
Step 3: Final Answer:
Aeschynomene aspera is the plant that is not used for preparing plant-based insecticides.
Botanical or plant-based insecticides are natural chemicals extracted from plants that act as pest repellents, toxicants, or growth regulators.
These bio-pesticides are preferred in organic farming due to their biodegradable nature and minimal environmental toxicity.
Step 2: Detailed Explanation:
Let us examine the chemical properties and applications of the four species:
- Chrysanthemum cinerariaefolium: The flowers of this plant are the primary source of natural pyrethrins, which are highly effective contact insecticides that target the nervous systems of insects.
- Azadirachta indica (Neem): Neem leaves and seeds contain azadirachtin, a potent tetranortriterpenoid that acts as an antifeedant, repellent, and insect growth regulator.
- Derris ferruginea: The roots of this species contain rotenone, a natural chemical compound used as a broad-spectrum insecticide and piscicide.
- Aeschynomene aspera (Sola pith plant): This is a herbaceous plant that grows in waterlogged and marshy areas. It has highly spongy, light, and fibrous wood (pith) used for making handicrafts, traditional toys, and decorations. It does not contain any notable insecticidal or toxic secondary metabolites.
Therefore, Aeschynomene aspera is not used in the preparation of biopesticides.
Step 3: Final Answer:
Aeschynomene aspera is the plant that is not used for preparing plant-based insecticides.
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