Biology · Class 12 Science
Ch 14Bioresources of Assam — Class 12 Biology, concept-first.
Assam is one of India's richest states in living wealth, lying where the Eastern Himalaya and Indo-Burma biodiversity regions meet. Some of these living things are bioresources — organisms people use directly for medicine, timber, fibre and industry.
Key concepts
Hover a concept to preview it and jump to its most relevant Q&A.
Medicinal Plants of Assam
Medicinal plants yield phytochemicals (chiefly alkaloids) used as drugs. Key examples in the Assam syllabus are Sarpagandha (Rauvolfia serpentina) — its root alkaloid reserpine treats high blood pressure; Neem (Azadirach…
Most relevant Q&A
- Name the alkaloid obtained from Sarpagandha and state its principal medicinal use.Free
- Give the scientific name, family and medicinal use of Neem and Tulsi.Free
- Cinchona and Atropa are listed as medicinal plants, yet they are not grown in Assam. Name the alkaloid and medicinal use of each.Preview
- Give an account of the medicinal plants prescribed as bioresources of Assam, mentioning the scientific name, part used, active compound and…Free
Chapter contents
The NCERT structure, section by section. Open a section to see its questions, then read the concept-first solution.
Bioresources of Assam
Assam is one of India's richest states in living wealth, lying where the Eastern Himalaya and Indo-Burma biodiversity regions meet.
Medicinal Plants
Medicinal plants supply phytochemicals — mostly alkaloids — that are used as drugs. The syllabus prescribes five examples.
Timber-Yielding Plants
Timber-yielding plants are trees valued for their wood, used in furniture, construction, plywood and matchwood. The syllabus prescribes five.
Sericogenic Resources — Muga and Eri Silk
Sericulture — rearing silkworms for silk — is one of Assam's most distinctive bioresources. Besides ordinary mulberry silk (pat), Assam produces two special non-mulberry (vanya) silks: muga and eri.
Summary
Bioresources of Assam — quick recap.
Very Short Answer Questions
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- Q1Name the alkaloid obtained from Sarpagandha and state its principal medicinal use.Free
- Q2Which silkworm produces muga silk, and what is special about the colour of this silk?Free
- Q3Name the State Tree of Assam and give its scientific name.Preview
- Q4Why is eri silk called 'ahimsa' or peace silk?Preview
Short Answer Questions
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- Q1Distinguish between muga silk and eri silk.Free
- Q2Give the scientific name, family and medicinal use of Neem and Tulsi.Free
- Q3Name the primary and secondary host plants of the muga silkworm.Preview
- Q4Cinchona and Atropa are listed as medicinal plants, yet they are not grown in Assam. Name the alkaloid and medicinal use of each.Preview
Long Answer Questions
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- Q1Give an account of the medicinal plants prescribed as bioresources of Assam, mentioning the scientific name, part used, active compound and…Free
- Q2Describe the timber-yielding plants of Assam with their scientific names and uses, and explain the special importance of Hollong.Free
- Q3Write an account of muga silk: the silkworm, its host plants, the characteristics of the silk, and its economic and cultural significance.Preview
- Q4Describe eri silk culture — the silkworm, its host plants, the nature of the silk, and why it is regarded as a non-violent silk.Preview