Mating between two individuals differing in genotype to produce genetic variation is called
Options
(a) domestication (b) introduction (c) hybridization (d) mutation
Correct Answer:
hybridization
Explanation:
No explanation available. Be the first to […]
Which of the following communities is more vulnerable to invasion by outside animals and plants
Options
(a) temperature forests (b) tropical evergreen (c) oceanic island communities (d) mangroves
Correct Answer:
tropical evergreen
Explanation: […]
Two places in India show maximum biological diversity. One of them is the Western ghat, another is
Options
(a) eastern ghat (b) coastal region (c) north east india (d) foot his of garhwal […]
The natural cycles of carbon, oxygen, nitrogen, water and phosphorus, sulphur, etc are collectively called as
Options
(a) biochemical cycles (b) geochemical cycles (c) material cycles (d) none of these
Correct Answer:
none […]
The macronutrient which is an essential component of all organic compounds, yet not obtained by plants from soil is
Options
(a) nitrogen (b) carbon (c) phosphorus (d) magnesium
Correct Answer:
carbon
Explanation:
No […]
A eukaryotic gene contain two kinds of base sequences. Which of these plays an important role in protein synthesis?
Options
(a) introns (b) exons (c) introns and exons (d) none of these
Correct […]
According to one of the most accepted theory the earth atmosphere before any life had originated consisted of H₂O, H₂, NH₂ and
Options
(a) CH₄ (b) O₂ (c) N₂ (d) none of these
Azospirillum is a
Options
(a) Nitrogen fixing vibroid bacterium (b) Gram +ve N fixing bacterium (c) Actinomycetous form which can fix nitrogen (d) Stringent anaerobe which fixes N
Correct Answer:
Nitrogen fixing vibroid […]
Emasculation means
Options
(a) removal of sepal (b) removal of petal (c) removal of stamens (d) removal of carpel
Correct Answer:
removal of stamens
Explanation:
No explanation available. Be the first to write […]
Prostate gland is a
Options
(a) digestive gland (b) sperm producing gland (c) semen secreting accessory gland of male (d) hormone producing gland of the ovary
Correct Answer:
semen secreting accessory gland of […]
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