Ecosystem And Biosphere

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76 The ability to fix atmospheric nitrogen is found in the

A
Leaves of some crop plants
B
Some marine red algae
C
Some blue-green algae
D
Cholera

77 Ripe grapes contain :

A
Fructose
B
Sucrose
C
Galactose
D
Glucose

78 Plants growing on sand are called as

A
chasmophytes
B
oxylophytes
C
lithophytes
D
psammophytes

79 Which one of the following is not a plant product?

A
Caffeine
B
Piperine
C
Nicotine
D
Saccharin

80 During photosynthesis the liberated gas is :

A
Carbon dioxide
B
Oxygen
C
Nitrogen
D
Hydrogen

81 Where are the Eucalyptus trees found in abundance ?

A
Mizo Hills
B
Naga Hills
C
Manipur Hills
D
Nilgiri Hills

82 Which of the following elements is obtained from the sea algae ?

A
Argon
B
Sulphur
C
Vanadium
D
Iodine

83 Clove, the commonly-used spice, is obtained from the

A
Fruit
B
Stem
C
Root
D
Flower bud

84 Which of the following is not a component of chlorophyll ?

A
Hydrogen
B
Magnesium
C
Carbon
D
Calcium

85 From which part of the plant is clove, the commonly used spice, obtained ?

A
Fruit
B
Flower bud
C
Stem
D
Root

86 Hashish is obtained from a plant. From which part of the plant is it obtained ?

A
Leaves
B
Stem
C
Exudate from leaves and female inflorescences.
D
Exudate from stem and male inflorescences.

87 Which of the following represents a foodchain involving a producer, a vegetarian and a nonvegetarian ?

A
Grass – Insect – Elephant
B
Plant – Rabbit – Tiger
C
Fish – Insect – Whale
D
Tiger – Rabbit – Owl

88 A plant with compound leaves is :

A
Papaya
B
Coconut
C
Peepal
D
Hibiscus

89 Study of field crops is called

A
Pomology
B
Agronomy
C
Olericulture
D
Floriculture

90 Which one of the following is also called the ‘power plants’ of the cell ?

A
Golgi body
B
Mitochondrion
C
Ribosome
D
Lysosome