NEET 2013 Biology Questions
81. The H-zone in the skeletal muscle fibre is due to
(1) The central gap between myosin filaments in the A-band
(2) The central gap between actin filaments extending through myosin filaments in the A-band
(3) Extension of myosin filaments in the central portion of the A-band
(4) The absence of myofibrils in the central portion of A-band
82.Which one of the following is not a correct statement?
(1) Botanical gardens have collection of living plants for reference.
(2) A museum has collection of photographs of plants and animals.
(3) Key is a taxonomic aid for identification of specimens.
(4) Herbarium houses dried, pressed and preserved plant specimens
83. 131. Global warming can be controlled by
(1) Reducing reforestation, increasing the use of fossil fuel
(2) Increasing deforestation, slowing down the growth of human population
(3) Increasing deforestation, reducing efficiency of energy usage
(4) Reducing deforestation, cutting down use of fossil fuel
84.The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration.
Arrows represent net reactants or products. Arrows numbered 4, 8, and 12 can all be
(1) ATP
(2) H2O
(3) FAD+ or FADH2
(4) NADH
85. Figure shows human urinary system with structures labelled A to D. Select option which correctly identifies them and gives their characteristics and/ or functions
(1) B-Pelvis-broad funnel shaped space inner to hilum, directly connected to loops of Henle
(2) C-Medulla - inner zone of kidney and contains complete nephrons
(3) D-Cortex - outer part of kidney and do not contain any part of nephrons
(4) A-Adrenal gland-located at the anterior part of kidney. Secrete Catecholamines which stimulate glycogen breakdown
86. Artificial insemination means
(1) Transfer of sperms of husband to a test tube containing ova
(2) Artificial introduction of sperms of a healthy donor into the vagina
(3) Introduction of sperms of healthy donor directly into the ovary
(4) Transfer of sperms of a healthy donor to a testtube containing ova
87.The tendency of population to remain in genetic equilibrium may be disturbed by
(1) Lack of migration
(2) Lack of mutations
(3) Lack of random mating
(4) Random mating
88.Select the wrong statement:
(1) Anisogametes differ either in structure, function or behaviour
(2) In Oomycetes female gemete is smaller and motile, while male gamete is larger and nonmotile
(3) Chlamydomomas Exhibits both isogamy and anisogamy and Fucus shows oogamy
(4) Isogametes are similar in structure, function and behaviour
89. One of the legal methods of birth control is
(1) by abstaining from coitus from day 10 to 17 the menstrual cycle
(2) by having coitus at the time of day break
(3) by a premature ejaculation during coitus
(4) abortion by taking an appropriate medicine
90. Select the correct match of the digested products in humans given in column I with their absorption site and mechanism in column II
Answers
81. (2) The central gap between actin filaments extending through myosin filaments in the A-band
82. (2) A museum has collection of photographs of plants and animals.
83. (4) Reducing deforestation, cutting down use of fossil fuel
84. (1) ATP
85. (4) A-Adrenal gland-located at the anterior part of kidney. Secrete Catecholamines which stimulate glycogen breakdown
86. (2) Artificial introduction of sperms of a healthy donor into the vagina
87. (3) Lack of random mating
88. (2) In Oomycetes female gemete is smaller and motile, while male gamete is larger and nonmotile
89. (1) by abstaining from coitus from day 10 to 17 the menstrual cycle
90. (4) Glycine, glucose Small intestine, active absorption
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