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

The correct answer is C. Plasma membranes, chromosomes, mitochondria, lysosomes.

Explanation:
Plasma membranes, chromosomes, mitochondria, and lysosomes are present in both plant and animal cells. 

A. Centriole middle lamella, Golgi bodies, and mitochondria are structures present in animal cells only. Middle lamella is a structure present in the cell walls of plant cells.
B. Cytoplasm, sap, vacuole, starch grains, and leucoplasts are structures present in plant cells only. 
D. Cytoplasm and nucleolus are present in both plant and animal cells, but centriole and cellulose cell wall are present in animal and plant cells, respectively.


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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