61. Fern belongs to
(a) Bryophyta.
(b) Pteridophyte
(c) Anthophyta
(d) None of these

 

62. In which section of the plant does photosynthesis take place?
(a) Roots
(b) Stem
(c) Leaves
(d) Flowers

 

63. Photosynthesis takes place faster in
(a) Yellow light
(b) White light
(c) Red light
(d) Darkness

 

64. Age of a tree can be determined by
(a) Counting the number of rings in the stem
(b) Counting the number of leaves
(c) Counting the number of branches
(d) Measuring the size of the tree

 

65. The green colour leaves are due to the presence of
(a) Metallic ions
(b) Haemoglobin
(c) Iron
(d) Chlorophyll

 

66. During the day time plants –
(a) Take in oxygen and give out carbon dioxide
(b) Take in carbon dioxide and give out oxygen
(c) Take in nitrogen and give out oxygen
(d) Take in carbon dioxide and give out nitrogen

 

67. Plants receive their nutrients mainly from
(a) Chlorophyll
(b) Atmosphere
(c) Light
(d) Soil

 

68. Potato is a modified form of
(a) Root
(b) Stem
(c) Fruit
(d) Leaf

 

69. A plant cell is distinguished from an animal cell by the presence of
(a) Nucleus
(c) Cell membrane
(d) Cytosol
(b) Chloroplasts

 

70. A man with blood group A can receive blood from persons having blood groups.
(a) A, O
(b) A, B, O
(c) A, AB, B
(d) A, B