Golden rice is a promising transgenic crop. When released for cultivation, it will help in:

(a) alleviation of vitamin- A deficiency

(b) pest resistance

(c) herbicide tolerance

(d) producing a petrol-like fuel from rice

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Crop plants grown in monoculture are:

(a) low in yield

(b) free from intraspecific competition

(c) characterised by poor root system

(d) highly prone to pests

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Triticale, the first man-made cereal crop, has been obtained by crossing wheat with: 

(a) rye

(b) pearl millete

(c) sugarcane

(d) barley

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In order to obtain virus-free plants through tissue culture the best method is:

(a) protoplast culture

(b) embryo culture

(c) anther culture

(d) meristem culture

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The name of the Indian scientist associated with Green Revolution in India is

(a) H.G. Khorana

(b) M.S.Swaminathan

(c) Homi Bhaba

(d) C.N.R. Rao.

Concept Questions :-

Impact:Green Revolution
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Which is Indian dwarf wheat ?

(a) T.dicoccum

(b) T. sphaerococcum

(c) T. turgidum

(d) T. aestivum

Concept Questions :-

Impact:Green Revolution
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People recovering from long illness are often advised to include the alga Spirulina in their diet because it

(a) makes the food easy to digest

(b) is rich in proteins

(c) has antibiotic properties

(d) restores the intestinal microflora.

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Cattle fed with spoilt hay of sweet clover which contains dicumarol

(a) are healthier due to a good diet

(b) catch infections easily

(c) may suffer vitamin K deficiency and prolonged bleeding

(d) may suffer from beri beri due to deficiency of B vitamins

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Somaclonal variation can be obtained by

(a) application of colchicine

(b) irradiation with gamma rays

(c) tissue culture

(d) hybridisation.

Concept Questions :-

Plant Tissue Culture
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Somaclonal variation appears in

(a) organisms produced through somatic hybridization

(b) plants growing in highly polluted conditions

(c) apomictic plants

(d) tissue culture raised plants.

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