Biology Questions and answers

Topics

  1. General Science
    1. Assertions and Reasons
    2. Biology
    3. Chemistry
    4. Physics
    5. Inventions
51). Match the following :
A. Red blood cells 1. Leucocytes
B. White blood cells 2. Erythrocytes
C. Platelets 3. Thrombocytes
A B C
A). 3 1 2
B). 2 1 3
C). 2 3 1
D). 1 2 3
52). Desert plants would be characterised by :
A). vivipary
B). aerenchyma
C). aerial roots
D). sunken stomata
53). Flower colours are due to :
A). Chlorophyll
B). melanin
C). phytochromes
D). anthocyanins
54). Which of the following combinations are incorrect?
1. Asthma - Lung
2. Influenza - Respiratory tract
3. Rickets - Pancreas
4. Malaria - Spleen
A). 1 and 2
B). 1 and 3
C). 2 and 4
D). 3 and 4
55). Which of the following diseases is hereditary?
A). Dysentery
B). Tuberculosis
C). Haemophilia
D). Cancer


56). The sweetest sugar is :
A). sucrose
B). glucose
C). fructose
D). lactose
57). Which of the following statements are true in relation to transpiration and water movements in plants?
1. Removing all the leaves from a plant will reduce the flow of water up the stem.
2. Covering both sides of a leaf with a plastic film will reduce both stomatal and cuticular transpiration.
3. Injecting detergents (which lower the surface tension of water) into the xylem of tree trunk could prevent water from reaching the upper branches.
4. Along most of its route through a plant, water moves by diffusion either along cell walls or across protoplasts.
A). 1, 2 and 3
B). 1, 2 and 4
C). 1, 3 and 4
D). 2, 3 and 4
58). The largest flower in the world is that of :
A). Lotus
B). Rafflesis
C). Giant cactus
D). none of these
59). When a colourblind male marries a normal woman not carrying the gene for colour-blindness, their offspring's will be :
A). normal sons and normal daughters
B). normal sons and carrier daughters
C). normal daughters and colour-blind sons
D). colour-blind sons and carrier daughters
60). Which of the following practices enhance the nutrient content of food?
1. Deep frying
2. Fermentation
3. Sprouting
A). 1 and 2
B). 1 and 3
C). 2 and 3
D). 1, 2 and 3
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