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 71: A health condition that is known to have resulted from gene mutation is
Options:
A) haemophilia
B) colour blindness
C) sickle-cell anaemia
D) anaemia
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The correct answer is C .
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Question 72: A major difference between platyhelminthees and coelenterates is that platyhelminthes
Options:
A) are multicellular
B) have developed a mesoderm
C) reproduce sexually
D) reproduce asexually
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The correct answer is B .
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Question 73:
The part numbered 12 is
Options:
A) pectoral fin
B) scale
C) opercular plate
D) gill plate
E) pectoral girdle
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The correct answer is C .
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Question 74: Secondary thickening in dicotyledonous stem is controlled by the
Options:
A) xylem
B) phloem
C) cambium
D) pericycle
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The correct answer is C .
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Question 75:
The energy released by 1 gram of glucose is
Options:
A) 6 kcal
B) 4 kcal
C) 5 kcal
D) 3 kcal
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The correct answer is B .
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Question 76: The part of the mammalian ear responsible for the maintenance of balance is the
Options:
A) cochlea
B) pinna
C) perilymph
D) vestibular system
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The correct answer is D .
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Question 77: Nervous control differs from hormonal control in that the former
Options:
A) involves only chemical transmision
B) is a lower process
C) produces short-term changes
D) has no specific pathway
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The correct answer is C .
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Question 78: Vaccination is carried out in order to
Options:
A) check the production of poison
B) increase the activity of white blood cells
C) increase the number of red blood cells
D) stimulate the production of antibodies
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The correct answer is D .
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Question 79: Which of the following sequences is the correct arrangement of tissues in the anatomy of a young dicotyledonous stem from the inside to the outside ?
Options:
A) pith , phloem, cambium, xylem, parenchyma, collenchyma and epidermis
B) Xylem, phloem, cambium, cortex, endodermis, collenchyma and epidermis
C) Pith,xylem, cmbium,phloem,, collenchyma, parenchyma and epidermis
D) phloem, xylem, cambium, cortex, endodermis, collenchyma and epidermis
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The correct answer is C .
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Question 80:
Use the diagram above to answer this question.
The part labelled IV is the
Options:
A) mitochondrion
B) cell wall
C) endoplasmic reticulum
D) nucleus
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The correct answer is C .