BIOLOGY 1 | Study Mode

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Question 91
A
scolex
B
hook
C
head
D
sucker
Explanation

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Correct option: B
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Question 92
A
Symbionts must be living
B
It is an association of 'give and take
C
The association between two may involve two plants
D
Association between two similar species
Explanation

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Correct option: D
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Question 93
A
are photosynthetic
B
can survive dry conditions
C
reproduce by means of conjugation
D
have no seeds
Explanation

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Correct option: D
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Question 94
A
Centriole middle lamella, golgi bodies, mitrochondrion
B
Cytoplasm, sap, vacuole, starch grains, leucoplasts
C
Plasma membranes, chromosomes, mitochondria, lysosomes
D
Cytoplasm, centriole, cellulose cell wall, nucleolus
Explanation

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Correct option: C
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Question 95
A
Remains unchanged
B
Takes up water an burst
C
Absorbs a little water
D
Loses water and shrivels
Explanation

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Correct option: D
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Question 96
A
Are all aquatic plants
B
All grow in deserts
C
Are seedless plants
D
All produce colourless flowers
Explanation

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Correct option: C
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Question 97
A
They are unicellular organisms
B
Their spores could be dispersed by wind
C
They are capable of living independent lives
D
Their bodies are made up of thallus and filaments alternatively
Explanation

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Correct option: D
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Question 98
A
Is flattened heart-shaped structure
B
Is green because its cells contain chloroplasts
C
Is the dominant plant
D
Bears the sexual organ
Explanation

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Correct option: C
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Question 99
A
Mitochondria
B
Chloroplast
C
Ribosomes
D
Vacuoles
Explanation

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Correct option: B
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Question 100
A
Molecules from solution of higher concentration to low concentration
B
Molecules from solution of low concentration to high concentration
C
Water from solution of high concentration to low concentration
D
Water across a semi-permeable membrane from solution of low concentration to high concentration
Explanation

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Correct option: D

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