Which of the following are not secondary metabolites in plants? a) Morphine, codeine b) Vinblastin, curcumin c) Amino acids, glucose d) Rubber, gums Answer: c) Amino acids, glucose... View Article
Complete the flow chart on central dogma. (b) (c) (a)DNA --------> mRNA -------->(d) 1) (a)-Replication; (b)-Transcription; (c)-Transduction; (d)-Protein 2) (a)-Translation;... View Article
Which of the following algae produce Carrageen? a) Green algae b) Brown algae c) Blue-green algae d) Red algae Answer: d) Red algae... View Article
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
DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as a) Yellow bands b) Dark red bands c) Bright orange bands d) Bright blue bands Answer: c) Bright orange bands... View Article
Diadelphous stamens are found in a) China rose b) Citrus c) China rose and citrus d) Pea Answer: d) Pea... View Article
The first stable product of CO2 fixation in sorghum is a) Pyruvic acid b) Succinic acid c) Oxaloacetic acid d) Phosphoglyceric acid Answer: c) Oxaloacetic acid... View Article