Question:
Kusumi strain crop of lac is obtained from _____________.
Kusumi strain crop of lac is obtained from _____________.
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Associate the name of the lac strain directly with the local name of its host plant: the "Kusumi" strain is named after the "Kusum" tree, which is botanically known as Schleichera oleosa.
Updated On: Jul 21, 2026
- Butea monosperma
- Zizyphus mauritiana
- Schleichera oleosa
- Acacia nilotica
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Lac is a valuable natural resin secreted as a protective covering by the scale insect Kerria lacca.
Lac cultivation is classified into two major biological strains: the Rangeeni strain and the Kusumi strain.
These strains differ in their life cycle durations, quality of the lac produced, and their preference for specific host tree species.
Step 2: Detailed Explanation:
The Kusumi strain of the lac insect is primarily reared on the Kusum tree, botanically identified as Schleichera oleosa.
This strain produces the highest quality of natural lac, which is light amber in color, has low coloring matter, and is highly priced in industrial markets.
Let us analyze the host plants listed in the options:
- Butea monosperma (Palas): This tree is the principal host for the Rangeeni strain of lac, which produces a lower-grade dark-red lac.
- Zizyphus mauritiana (Ber): While Ber is a highly versatile host that can support both strains, it is not the primary diagnostic host that defines the classic Kusumi crop.
- Acacia nilotica (Babool): This species serves as a minor or regional host for the Rangeeni strain, particularly in dry regions, and does not yield the high-quality Kusumi lac.
Since the premium Kusumi strain is named after and biologically adapted to the Kusum tree, Schleichera oleosa is the correct answer.
Step 3: Final Answer:
The Kusumi strain crop of lac is obtained from Schleichera oleosa.
Lac is a valuable natural resin secreted as a protective covering by the scale insect Kerria lacca.
Lac cultivation is classified into two major biological strains: the Rangeeni strain and the Kusumi strain.
These strains differ in their life cycle durations, quality of the lac produced, and their preference for specific host tree species.
Step 2: Detailed Explanation:
The Kusumi strain of the lac insect is primarily reared on the Kusum tree, botanically identified as Schleichera oleosa.
This strain produces the highest quality of natural lac, which is light amber in color, has low coloring matter, and is highly priced in industrial markets.
Let us analyze the host plants listed in the options:
- Butea monosperma (Palas): This tree is the principal host for the Rangeeni strain of lac, which produces a lower-grade dark-red lac.
- Zizyphus mauritiana (Ber): While Ber is a highly versatile host that can support both strains, it is not the primary diagnostic host that defines the classic Kusumi crop.
- Acacia nilotica (Babool): This species serves as a minor or regional host for the Rangeeni strain, particularly in dry regions, and does not yield the high-quality Kusumi lac.
Since the premium Kusumi strain is named after and biologically adapted to the Kusum tree, Schleichera oleosa is the correct answer.
Step 3: Final Answer:
The Kusumi strain crop of lac is obtained from Schleichera oleosa.
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