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 1:
In natural selection, Darwin proposed that evolution occurred because of the following conditions except
Options:
A) that nature selects those that will survive to reproduce their kind
B) there is a fierce competition among the offspring
C) that the weaker offspring are eliminated
D) food and other needs are abundant
Show Answer
The correct answer is D .
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Question 2:
The greatest amount of energy would be obtained by the Oxidation of 100kg of
Options:
A) Meat
B) Butter
C) Sugar
D) Biscuit
Show Answer
The correct answer is B .
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Question 3:
Which of the following soil types becomes less fertile due to the intense leaching caused by tropical rains?
Options:
A) Yellow soil
B) Laterite soil
C) Red soils
D) Black soil
Show Answer
The correct answer is B .
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Question 4: The membrane surrounding the vacuole in a plant cell is called the
Options:
A) plasmalemma
B) tonoplast
C) nuclear membrane
D) endoplasmic reticulum
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The correct answer is B .
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Question 5: Some of the major elements required by plants are
Options:
A) Potassium, nitrogen, phosphorus, sodium, calcium
B) Nitrogen, phosphorus, molybdenum, sodium, calcium
C) Potassium, phosphorus, molybdenum, sodium, calcium
D) Potassium, nitrogen, iron , sodium, calcium
E) Potassium, nitrogen, phosphorus, silicon, cadmium
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The correct answer is A .
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Question 6:

The structure labelled 5 is the
Options:
A) neucleolus
B) Golgi body
C) mitochondrion
D) vacuole
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The correct answer is B .
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Question 7: The average number of individuals of a species per unit area of the habitat is the
Options:
A) population density
B) population frequency
C) population size
D) population distribution
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The correct answer is A .
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Question 8: Which of the following organs regulates the levels of water, salts , hydrogen ions and urea in the mammalian blood?
Options:
A) Liver
B) Kidney
C) Bladder
D) Colon
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The correct answer is B .
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Question 9: The modes of nutrition in Nitrobacter, Ascaris and Homo sapiens respectively are
Options:
A) photosynthetic , parasitic and holozoic
B) chemosynthetic, parasitic and holozoic
C) photosynthetic, parasitic and heterophytic
D) chemosynthetic, holophytic and holozoic
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The correct answer is B .
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Question 10: One of adaptation of Cactus opuntia to conserve water is the reduction of
Options:
A) internodes
B) stem to leaves
C) leaves to spine
D) flower size
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The correct answer is C .