(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
12 Q) "The macro-nutrients provided inorganic fertilizers are "
(a) carbon, iron and boron
(b) magnesium, manganese and sulphur
(c) magnesium, zinc and iron
(d) magnesium, phosphorus and potassium
(a) green peas and beans
(b) pepper and potato
(c) tomato and onion
(d) pumpkin and carrots
14 Q) Which one among the following has the specialized absorptive tissue in roots?
(a) Orchids
(b) Epiphytes
(c) Monocots
(d) All of these
15 Q) Which one among the following pigment found in plant cells is known as "vegetable chaemeleon"?
(a) Anthocyanin
(b) Chlorophyll
(c) Lycophyll
(d) Plastocyanin
16 Q) "Which of the following groups of animals are warm blooded (1) Amphibia (2) Reptilia (3) Aves (Birds) (4) Mammalia Select the correct answer using the codes given below"
(a) All of these
(b) 1,2 and 3
(c) 2 and 3
(d) 3 and 4
17 Q) The ultimate cause of water movement in a plant stem against gravity is
(a)osmosis
(b) transpiration
(c) photosynthesis
(d) diffusion
18 Q) If a dicot stem is stained with safranin and fast green, the phloem will pick up
(a) orange colour
(b) green colour
(c) yellow colour
(d) red colour
19 Q) The "pond bloom" of blue green algae which causes the death of fishes and cattles produces the toxins of
(a) ammonia
(b) hydroxylamine
(c) carbohydrates
(d) fatty acids
20 Q) " Assertion (A) In filariasis, the lower legs and scrotum are swelled un-proportionate level. Reason (R) The filarial worm blocks the lymph vessels and lymph node"
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
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