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 631: The deficiency of vitamin D leads to
Options:
A) beriberi
B) pellagra
C) ricket
D) scurvy
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The correct answer is C .
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Question 632:
When a marine fish was taken from the ocean and put in a tank of fresh water, it died after a short period because?
Options:
A) the tank was too small compared to the large-ocean
B) the body cells of the fish swelled and burst as a result of the hypotonic fresh water
C) the body cells of the fish shrank as their sap was hypertonic to the freshwater
D) there was no food in the tank, so the fish starved
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The correct answer is B .
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Question 633: which of these elements in plants is required in small quantities only
Options:
A) Boron
B) Nitrogen
C) Phosphorus
D) Magnesium
E) Potassium
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The correct answer is A .
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Question 634: What is the genetic ratio of a cross between homozygous tall plant and a homozygous dwarf plant?
Options:
A) 0 tall : 4 short
B) 3 tall : 1 short
C) 2 short : 2 tall
D) 1 tall : 1 short
E) 4 tall : o short
Show Answer
The correct answer is E .
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Question 635: The mammalian lung is made air tight by the
Options:
A) pleural cavity
B) mucous membrane
C) pleural membrane
D) diaphragm
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The correct answer is C .
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Question 636: i. Growth is mainly apical ii. Growth is specific with definite shape iii. Growth is throughout life. Which of the above correctly describes the growth pattern in plants?
Options:
A) i, ii and iii only
B) ii and iii only
C) i and ii only
D) i and iii only
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The correct answer is D .
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Question 637: The number of plants species obtained from a population study of a garden is as follows: Guinea grass (15), Ipomea spp (5), sida spp (7) and Imperata spp (23). What is the percentage of occurrence of Imperata spp?
Options:
A) 35%
B) 16%
C) 46%
D) 23%
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The correct answer is C .
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Question 638: A group of similar cells performing the same function is
Options:
A) an organ
B) a system
C) a tissue
D) an organelle
E) an enzymes
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The correct answer is C .
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Question 639: Which of the following disease can be caused by a bacterium?
Options:
A) Ringworm
B) Poliomyelitis
C) Malaria
D) Syphilis
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The correct answer is D .
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Question 640:
The components of blood in man are?
Options:
A) red blood cells, white blood cells, plasma and water
B) red blood cells, white blood cells, and plasma
C) red blood cells, white blood cells, and platelets
D) red blood cells, white blood cells, plasma and platelets
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The correct answer is D .