1 .Adventitious roots develop from
A.  Epidermis
B.  Pericycle or interfascicular parenchyma
C.  Endodermis
D.  Cortex
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2 .Wilting in plants occurs because of
A.  the blockage of phloem
B.  the blockage of xylem
C.  both (a ) and (b )
D.  increased transpiration
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3 .Bacteria do not need sunlight to grow because
A.  They prepare their food without the help of sunlight
B.  They use other kinds of light for their food synthesis
C.  They lack chlorophyll and so they are incapable of making their own food
D.  They hate sunlight
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4 .Which of the following one of the following weeds is effective in controlling water pollution caused by industrial effluents -
A.  Mogar grass
B.  Elephant grass
C.  Water hycinth
D.  Parthenium
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5 .The xylem in plants are responsible for:
A.  transport of water
B.  transport of amino acids
C.  transport of food
D.  transport of oxygen
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6 .Which among the given correctly explains the phenomenon of 'Test Tube Baby' -
A.  When the fertilisation is internal & development is external.
B.  When the fertilisation is external & development is internal.
C.  When every process of embryo formation is in the test tube.
D.  When the embryo develops in a test tube.
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7 .In the eye donation, which part of the eye is transplanted from the donor?
A.  Lens
B.  The whole eye
C.  Cornea
D.  Retina
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8 .Locomotory organ of a starfish is
A.  Flipper
B.  Muscular foot
C.  Paddle
D.  Tube feet
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9 .The genetic material that contains all the information needed for the development and existence of an organism is
A.  ribonucleic acid
B.  ribosomal RNA
C.  transfer RNA
D.  deoxyribonucleic acid
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10 .Plants absorb most of the water needed by them through their
A.  Embryonic zone
B.  Zone of elongation
C.  Root hairs
D.  Growing point
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11 .Foot and mouth disease in animals, a current epidemic in some parts of the world, is caused by
A.  protozoan
B.  fungus
C.  virus
D.  bacterium
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12 .A person having AB-group of blood can donate blood to a person having
A.  AB-group
B.  B-group
C.  O-group
D.  A-group
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13 .Which among the given listed is not a feature of organic farming -
A.  Very less energy consumption
B.  Use of synthetic fertilizers
C.  The non-use of chemical fertilizers & pesticides
D.  Soil is nurtured for furture use by maintaining micro-organisms
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14 .Consider the following organisms 1. Agaricus 2. Nostoc 3. Spirogyra Which of the above is/ are used as biofertiliser/biofertilisers?
A.  1 and 2
B.  Only 2
C.  2 and 3
D.  Only 3
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15 .Which of the following one of the following glands is responsible for secretion of sex hormones -
A.  Thyroid gland
B.  Adrenal gland
C.  Pituitary gland
D.  Sebaceous gland
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