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11.Organisms and Populations
medium
Examples of chemicals produced by plants as a defense against grazers and browsers
$I.$ Nicotine
$II.$ Caffeine
$III.$ Quinine
$IV.$ Strychnine
$V.$ Opium
Choose the correct combination
A
$I$ and $II$
B
$I, II, III$ and $IV$
C
$I, II$ and $III$
D
$I, II, III, IV$ and $V$
Solution
A wide variety of chemical substances that we extract from plants on a commercial scale (nicotine, caffeine, quinine, strychnine, opium etc); are produced by them actually as defences against grazers and browsers
Standard 12
Biology
Similar Questions
medium
Match Column $- I$ with Column $- II.$
| Column $- I$ | Column $- II$ |
| (a) Saprophyte | (i) Symbiotic association of fungi with plant roots |
| (b) Parasite | (ii) Decomposition of dead organic materials |
| (c) Lichens | (iii) Living on living plants or animals |
| (d) Mycorrhiza | (iv) Symbiotic association of algae and fungi |
Choose the correct answer from the options given below
$(a)\quad (b)\quad (c)\quad (d)$
