Biology is the study of life and living things. It can be divided into different areas that look at the structure, function, anatomy, and behavior of organisms.
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Question 281:
What is the function of trichocyst in paramecium?
Options:
A) Movement
B) Defence
C) Excretion
D) At which stage in this cycle can man b infected
Show Answer
The correct answer is B .
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Question 282: The swollen shoot disease of cocoa tree is caused by a
Options:
A) virus
B) fungus
C) bacterium
D) protozoan
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The correct answer is A .
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Question 283:

Food is stored in the structure labelled
Options:
A) III
B) I
C) IV
D) II
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The correct answer is C .
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Question 284: The possession of scales, laying of eggs with shells and bony structure of the head are characteristics shared by
Options:
A) birds and reptiles
B) fishes and birds
C) reptiles and fishes
D) birds and molluscs
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The correct answer is A .
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Question 285: Gestation in mammals is the period
Options:
A) required for growth after birth
B) between the formation of the foetus and birth
C) of development from zygote to birth
D) before the formation of the zygote
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The correct answer is B .
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Question 286: The phloem parenchyma is sometimes used for
Options:
A) food storage
B) supporting the stem
C) production of the sieve tube
D) transporting water
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The correct answer is A .
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Question 287: Which of the following cell constituents is NOT common in both plants and animals?
Options:
A) Mitochondria
B) Chloroplast
C) Ribosomes
D) Golgi apparatus
E) Vacuoles
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The correct answer is B .
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Question 288: Growing yam tendrils climb for support. This growth response is
Options:
A) haptotropism
B) geotropism
C) phototropism
D) hydrotropism
E) chemotropism
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The correct answer is A .
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Question 289: The path followed by air as it passes through the lungs in mammals
Options:
A) cochlea
B) pinna
C) perilymph
D) vestibular system
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The correct answer is D .
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Question 290: Underground stems which grow horizontally through the soil are
Options:
A) Bulbs
B) Rhizomes
C) Runners
D) Corms
E) Stolons
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The correct answer is B .