Q.20 Competition between two populations in an ecosystem is (A) beneficial (+) to both the populations (B) deleterious (˗) to both the populations (C) beneficial (+) to one population, but deleterious (˗) to the other population (D) beneficial (+) to one population, but no effect (0) on the other population
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Q.19 Which of the following is NOT a characteristic morphological feature of apoptotic cells? (A) Disassembly of nuclear envelope (B) DNA fragmentation (C) Increased cell size (D) Membrane blebbing
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Q.18 Which one of the following genetic crosses and their results indicates cytoplasmic inheritance? (A) Wild-type male mutant female → 100% progeny are mutant (B) Wild-type male mutant female → 25% progeny are wild-type (C) Mutant male wild-type female → 50% progeny are mutant (D) Mutant male wild-type female → 75% progeny are wild-type
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Q.17 Match the morphology in Group I with the corresponding microorganism in Group II: Group I: P. Coccus Q. Rod R. Comma S. Spiral Group II: 1. Treponema 2. Bacillus 3. Neisseria 4. Vibrio
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Q.16 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]: Assertion [a]: The resolving power of a transmission electron microscope is higher than that of the light microscope. Reason [r]: The wavelength of electrons is shorter than that of visible light.
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Q.15 Which one of the following immunoglobulins crosses the human placenta? (A) IgA (B) IgE (C) IgG (D) IgM
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Q.14 Which one of the following hormones is a tyrosine derivative? (A) Epinephrine (B) Estradiol (C) Progesterone (D) Testosterone
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Q.13 Which one of the following statements about polyploidy is correct? (A) Autopolyploids are derived from a single species (B) Autopolyploids are derived from two different species (C) Allopolyploids are derived from a single species (D) Allopolyploids are not fertile when mated with each other
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Q.12 The correct hierarchy of taxa in the Linnaean classification of eukaryotes is (A) kingdom, class, phylum, order, family, genus (B) kingdom, order, class, phylum, family, genus (C) kingdom, phylum, order, family, class, genus (D) kingdom, phylum, class, order, family, genus
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Q.11 Match the terminology in Group I with the stimulus in Group II that generates growth response of plants: Group I: P. Gravitropism Q. Phototropism R. Thigmotropism S. Chemotropism Group II: 1. Light 2. Touch 3. Chemical 4. Gravity
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