BOTANY Higher Secondary Second Year - Textbooks Online

Economic importance
Teak wood is durable and it is an important timber in the tropics. As
the seasoned teak, timber does not shrink, crack or alter its shape, it
is extensively used in making household furnitures.
It is also used in ship building, boats, etc.
It is used for interior decoration.
It is used for the manufacture of boards.
Self evaluation
I . Choose and write the correct options.
1. Acalyphine is extracted from
a. Acalypha indica b. Aegle marmelos
c. Cissus quadrangularis d. Mimosa pudica
2. Binomial of ‘vilvum’ is
a. Acalypha indica b. Aegle marmelos
c. Cissus quadrangularis d. Mimosa pudica
II. Answer the following questions in two or three sentences.
3. Define biomedicine.
4. Write the medicinal value of Aegle marmelos.
5. Write the medicinal uses of Solanum nigrum.
6. What is humulin?
III. Answer the following questions in about 100 words.
7. Write short notes on microbes in medicine.
8. Bring out the economic importance of teak.
9. Write a brief account on groundnut.
10. Write the economic importance of rice.
Reference
1. Diseases of crop plants of India by G. Rangaswami, Practice Hall of
India, 1966.
2. A Textbook of economic botany by Sambamoorthy and Subramaniam,
1989.
3. Economic botany - Plants in the world by Sompson, Conner and
Ogorzaly, 1986.
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