Normal adult human male has
A. 10 gram of haemoglobin/100 gram of blood
B. 14 gram of haemoglobin/100 gram of blood
C. 18 gram of haemoglobin/100 gram of blood
D. 24 gram of haemoglobin/100 gram of blood
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Plants wilt due to excess of
A. transpiration
B. photosynthesis
C. absorption
D. None of these
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Monotremes are unique mammals because they
A. posses hair
B. give birth to live young
C. secret milk in a pouch
D. lay eggs
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Poison glands of snakes are homologous to
A. electric organs of fishes
B. stings of rays
C. sebaceous glands of mammals
D. salivary glands of vertebrates
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Radical vascular bundles are those in which
A. xylem is surrounded by phloem
B. phloem is surrounded by xylem
C. xylem and phloem occur on the same radius
D. xylem and phloem occur on the different radii
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Plant bends towards the source of light on account of the movement of curvature known as
A. geotropism
B. thigmotropism
C. chemotropism
D. phototropism
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Plant have ____ while animals lack it.
A. starch
B. cellulose
C. protein
D. fat
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Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?
A. Exact concentration of solution is not given
B. Character of semi permeable membrane is not given
C. The flow of solution is not possible through semi permeable membrane
D. All are incorrect
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Photosynthesis is a process
A. reductive and exergonic
B. reductive and catabolic
C. reductive, endergonic and catabolic
D. reductive, endergonic and anabolic
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On which of the following plants did Gregor Mendal perform his classical experiment?
A. Gram
B. Maize
C. Pea
D. Wheat
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Pigmentation of skin is due to
A. lymphocytes
B. monocytes
C. leucocytes
D. melanocytes
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Norepinephrine increases
A. respiration
B. urine production
C. saliva production
D. blood pressure
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Night blindness is cause by lack of which vitamin?
A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
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Monocot root differs from dicot root in having
A. open vascular bundles
B. scattered vascular bundles
C. well developed pith
D. radially arranged vascular bundles
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Radioactivity is a phenomenon of the spontaneous emission of
A. protons (alpha particles)
B. electrons (beta particles)
C. gamma rays (short wave electromagnetic waves)
D. All of the above
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Organic Substances which, in very small amounts, control growth and development called
A. vitamins
B. hormones
C. enzymes
D. None of the above
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Our major foods, fibres, spices, fruits and beverage crops are
A. flowering plants
B. gymnosperms plants
C. pteridophytes
D. bryophytes
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Movements due to light are shown by
A. flowering plants
B. lower plants
C. all land plants
D. all the plants
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Outer covering of virus made up of protein is
A. capsid
B. coat
C. virion
D. viriod
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Radish is a
A. bulb
B. conn
C. modified root
D. tuber
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