To get haploid callus, one can culture
Options
(a) pollen grain (b) embryos (c) leaf tissue (d) stigma
Correct Answer:
pollen grain
Explanation:
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Drones in a colony of honey bee originate by
Options
(a) thelotoky (b) cyclic parthenogenesis (c) arrhenotoky (d) diploid parthenogenesis
Correct Answer:
arrhenotoky
Explanation:
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The equipment employed for sterilizing glass and culture media is known as
Options
(a) dry oven (b) incubator (c) autoclave (d) dehumidifier
Correct Answer:
autoclave
Explanation:
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Nitrogen fixers in Azolla are
Options
(a) Nostoc (b) Anabaena (c) Aulosira (d) Azospirillum
Correct Answer:
Anabaena
Explanation:
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Most reared silkworm in India is
Options
(a) Bombyx mori (b) Antheraea paphia (c) Antheraea roylei (d) Antheraea assama
Correct Answer:
Bombyx mori
Explanation:
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The first biocide used on a large scale was
Options
(a) bordeaux mixture (b) thurioside (c) DDT (d) benzene hexachloride
Correct Answer:
DDT
Explanation:
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DDT belongs to which of the following class of pesticides
Options
(a) organophosphate (b) organochloride (c) triazines (d) carbamates
Correct Answer:
organochloride
Explanation:
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Heterosis requires
Options
(a) selection (b) crossing (c) transformation (d) mutations
Correct Answer:
crossing
Explanation:
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To yield milk, cow is given
Options
(a) stilbesterol (b) sorbitol (c) gonadotropin (d) prolactin
Correct Answer:
prolactin
Explanation:
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Azotobacter – the fertilizer is
Options
(a) aerobic and symbiotic (b) anaerobic and symbiotic (c) anaerobic and non-symbiotic (d) aerobic and non-symbiotic
Correct Answer:
aerobic and non-symbiotic
Explanation:
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