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CBSE - Class 12 Biology Strategies for Enhancement in Food Production Worksheet

1.
The culture medium (nutrient medium) can be referred to as a ‘highly enriched laboratory soil. Justify the statement.
2.
The term ‘totipotency’ refers to the capacity of a:
a. cell to generate whole plant b. bud to generate whole plant c. seed to germinate d. cell to enlarge in size.
3.
What are the duties of a veterinary doctor in management of a poultry farm?
4.
Does apiculture offer multiple advantages to farmers? List its advantages if it is located near a place of commercial flower cultivation.
5.
33 percent of India’s Gross Domestic Product comes from
a. Industry b. Agriculture c. Export d. Small-scale cottage industries.
6.
A few statements are given below followed by a set of terms in a box. Pick the correct term and write it against the appropriate statement
a. Mating of closely related individuals within the same breed

(i) Cross breeding, (ii) Inter-specific hybridization, (iii) Out breeding, (iv) Out crossing, (v) Inbreeding
7.
Plants raised through tissue cultures are clones of the ‘parent’ plant. Discuss the utility of these plants.
8.
The scientific process by which crop plants are enriched with certain desirable nutrients is called:
a. crop protection b. breeding c. bio-fortification d. bio-remediation.
9.

Fill in the blanks

10.
Explain the concept of the Blue Revolution.
11.
Which one of the following is not a fungal disease?
a. Rust of wheat b. Smut of Bajra c. Black rot of crucifers d. Red rot of sugarcane
12.
Would it be wrong to call plants obtained through micro-propagation as ‘clones’? Comment.
13.
Use of certain chemicals and radiation to change the base sequences of genes of crop plants is termed:
a. recombinant DNA technology b. transgenic mechanism c. mutation breeding d. gene therapy.
14.
A person who is allergic to pulses was advised to take a capsule of Spirulina daily. Give the reasons for the advise.
15.
Give two important contributions of Dr. M. S. Swaminathan.
16.
A farmer was facing the problem of low yield from his farm. He was advised to keep a beehive in the vicinity. Why? How would the beehive help in enhancing yield?
17.
Sonalika and Kalyan Sona are varieties of:
a. wheat b. rice c. millet d. tobacco
18.
The agriculture sector of India employs about:
a. 50 per cent of the population b. 70 per cent of the population c. 30 per cent of the population d. 60 per cent of the population.
19.
Inbreeding is carried out in animal husbandry because it:
a. increases vigour b. improves the breed c. increases heterozygosity d. increases homozygosity
20.
(a) The shift from grain to meat diets creates more demands for cereals. Why?

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