Archives

The plant hormone used to destroy weeds in a field

a) IAA b) NAA c) IBA d) 2, 4-D Answer: d) 2, 4-D... View Article

The site of perception of light in plants during photoperiodism is

a) Leaf b) Stem c) Axillary bud d) Shoot apex Answer: a) Leaf... View Article

During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out

a) RNA b) Histones c) DNA d) Polysaccharides Answer: c) DNA... View Article

Gemmae are present in

a) Some Liverworts b) Some Gymnosperms c) Pteridophytes d) Mosses Answer: a) Some Liverworts... View Article

When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as

a) Telocentric b) Metacentric c) Sub-metacentric d) Acrocentric Answer: b) Metacentric... View Article

The factor that leads to the Founder effect in a population is

a) Genetic drift b) Mutation c) Genetic recombination d) Natural selection Answer: a) Genetic drift... View Article

When gene targetting involving gene amplification is attempted in an individual’s tissue to treat disease, it is known as :

a) Biopiracy b) Molecular diagnosis c) Gene therapy d) Safety testing Answer: c) Gene therapy Explanation: It is a technique used to... View Article

Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction)?

a) Extension, Denaturation, Annealing b) Denaturation, Annealing, Extension c) Annealing, Denaturation, Extension d) Denaturation,... View Article

Which of the following stages of meiosis involves the division of centromere?

a) Metaphase I b) Metaphase II c) Telophase II d) Anaphase II Answer: d) Anaphase II Explanation: It is during the anaphase, the... View Article

The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is :

a) Geitonogamy b) Xenogamy c) Chasmogamy d) Cleistogamy Answer: b) Xenogamy... View Article

The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as

a) Standing crop b) Climax community c) Climax d) Standing state Answer: d) Standing state... View Article

The production of gametes by the parents, formation of zygotes, the F1 and F2 plants, can be understood from a diagram called

a) Bullet square b) Punch square c) Net square d) Punnett square Answer: d) Punnett square... View Article

In the equation GPP – R = NPP, R represents :

a) Respiration losses b) Retardation factor c) Environmental factor d) Radiant energy Answer: a) Respiration losses... View Article

Plants follow different pathways in response to the environment or phases of life to form different kinds of structures. This ability is called

a) Elasticity b) Flexibility c) Maturity d) Plasticity Answer: d) Plasticity Explanation: A good example of this phenomenon is the... View Article

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Archives

The plant hormone used to destroy weeds in a field

The site of perception of light in plants during photoperiodism is

During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out

Gemmae are present in

When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as

The factor that leads to the Founder effect in a population is

When gene targetting involving gene amplification is attempted in an individual’s tissue to treat disease, it is known as :

Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction)?

Which of the following stages of meiosis involves the division of centromere?

The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is :

The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as

The production of gametes by the parents, formation of zygotes, the F1 and F2 plants, can be understood from a diagram called

In the equation GPP – R = NPP, R represents :

Plants follow different pathways in response to the environment or phases of life to form different kinds of structures. This ability is called

DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as

Diadelphous stamens are found in

The first stable product of CO2 fixation in sorghum is

Which of the following plants is monoecious?

Which of the following statements is not correct on pyramids of numbers, biomass and energy?

20 Sep 2021: The Hindu Analysis

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