In a population of 1000 individuals 360 belong to genotype AA, 480 to Aa and
In a population of 1000 individuals 360 belong to genotype AA, 480 to Aa and the remaining 160 to aa, Based on this data, the frequency of allele A in the population is :
Biology
During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning
During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by :
Options
(a) Xanthophyll (b) Carotene (c) Cytochrome (d) Leghemoglobin
Correct Answer:
Leghemoglobin
Explanation:
No explanation available. Be the first […]
An association of individuals of different species living in the same habitat and
An association of individuals of different species living in the same habitat and having functional interactions is:
Options
(a) Biotic community (b) Ecosystem (c) Population (d) Ecological niche
Correct Answer:
Biotic community
Explanation: […]
A population will not exist in Hardy -Weinberg equilibrium if :
A population will not exist in Hardy -Weinberg equilibrium if :
Options
(a) There are no mutations (b) There is no migration (c) The population is large (d) Individuals mate selectively
Correct Answer: […]
What causes a green plant exposed to the light on only one side, to bend toward
What causes a green plant exposed to the light on only one side, to bend toward the source of light as it grows ?
Options
(a) Green plants seek light because they are […]
Typical growth curve in plants is :
Typical growth curve in plants is :
Options
(a) Linear (b) Stair-steps shaped (c) Parabolic (d) Sigmoid
Correct Answer:
Sigmoid
Explanation:
Sigmoid growth curve maintains equilibrium with carrying capacity, it forms asymptote stage in […]
Match the following and select the correct answer:
Match the following and select the correct answer: (a) Centriole (i) lnfoldings in mitochondria (b) Chlorophyll (ii) Thylakoids (c) Cristae (iii) Nucleic acids (d) Ribozymes iv) Basal body cilia or flagella
Options
(a) […]
Dr F. Went noted that if coleoptile tips were removed and placed on agar for one hour
Dr F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly- cut coleoptile stumps. Of what […]
Auxin can be bioassayed by :
Auxin can be bioassayed by :
Options
(a) Hydroponics (b) Potometer (c) Lettuce hypocotyl elongation (d) Avenacoleoptile curvature
Correct Answer:
Avenacoleoptile curvature
Explanation:
Avena coleptile curvature is used for the bioassay of auxin.
A few normal seedling of tomato were kept in a dark room. After few days
A few normal seedling of tomato were kept in a dark room. After few days they were found to have become white- coloured like albions, Which of the following terms will you use to describe […]