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In some members of Which of the following pairs of families, pollen grains retain their viability for months after release

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Which of the following statements is correct? (1) Some of the organisms can fix atmospheric

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

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Which of the following is not an application of PCR (Polymerase Chain Reaction)? (1) Detection of gene mutation (2) Molecular diagnosis

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Amensalism can be represented as: (1) Species A (+); Species B (0)

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Which of the following are not secondary metabolites in plants? (1) Rubber, gums (2) Morphine, codeine (3) Amino acids, glucose (4) Vinblastin, curcumin

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The plant hormone used to destroy weeds in a field (1) IBA (2) IAA (3) NAA (4) 2,4-D

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

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In the equation GPP – R =NPP R represents: (1) Respiration losses (2) Radiant energy (3) Retardation factor (4)Environment factor

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Complete the flow chart on central dogma. (1) (a)-Transduction; (b)-Translation; (c)-Replication; (d)-Protein (2) (a)-Replication; (b)-Transcription;

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Match List -I with List - II. (a) Protoplast fusion (i) Totipotency

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Match List -I with List - II. (a) Cristae (i) Primary constriction in chromosome

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When gene targetting involving gene amplification is attempted in an individual’s tissue to treat disease, it is known as : (1) Safety testing (2) Biopiracy

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Which of the following algae contains mannitol as reserve food material? (1) Ulothrix (2) Ectocarpus (3) Gracilaria (4) Volvox

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Which of the following statements in not correct? (1) Pyramid of numbers in a grassland ecosystem is upright.

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The first stable product of CO2 fixation in sorghum is: (1) Phosphoglyceric acid (2) Pyruvic acid (3) Oxaloacetic acid (4) Succinic acid

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Which of the following stages of meiosis involves division of centromere? (1) Telophase II (2) Metaphase I (3) Metaphase II (4) Anaphase II

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Match List -I with List - II. (a) Lenticels (i) Phellogen

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

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The site of perception of light in plants during photoperiodism is: (1) Leaf (2) Shoot apex (3) Stem (4) Axillary bud

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