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: In which of the features do bryophytes differ from pteridophytes?
Options:
A) Absence of flower
B) Alternation of generation
C) Dependency on water for reproduction
D) Presence of vascular system
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The correct answer is D .
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Question 282:
Which of the blood corpusles are irregular and amoeloid in shape
Options:
A) Leucocytes
B) Erythrocytes
C) Thrombocytes
D) Plasma
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The correct answer is A .
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Question 283:
The natural place of an organism or community is known as
Options:
A) Niche
B) Habit
C) Biome
D) Habitat
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The correct answer is D .
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Question 284:
Which of the following is an example of physiological variation in organisms?
Options:
A) Variation in blood pressure among individuals
B) Variation in beak shape among finches
C) Differences in fur color in rabbits
D) Variation in leaf shape in plants
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The correct answer is A .
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Question 285: The leech and the earthworm belong to the
Options:
A) mollusces
B) crustaceans
C) arachnides
D) annelides
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The correct answer is D .
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Question 286:
Which of the following is the effect of using artificial pollination in plant breeding?
Options:
A) Production of healthy crops
B) Lengthening the maturity time of crops
C) Making crops susceptible to disease
D) Improvement of the variety of crops
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The correct answer is D .
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Question 287: Which of the following are adaptations of animals to aquatic habitats?
Options:
A) Gills, streamlined bodies and lateral lines
B) Lateral line, streamlined bodies and lungs
C) Gills, scaly skin and lungs
D) Gills, streamlined bodies and spiracles
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The correct answer is A .
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Question 288:
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 289:
An organism which exhibit extracellular digestion is
Options:
A) Spirogyra
B) Paramecium
C) Amoeba
D) Rhizopus
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The correct answer is D .
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Question 290: Fehling's solution will readily change colour from blue to reddish colour when it is
Options:
A) mixed with sugar solution in the cold
B) warmed or heated by itself
C) mixed with reducing sugar in the cold
D) warmed or heated with complex solution
E) warmed with a solution of reducing sugar
Show Answer
The correct answer is E .