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 611:
Which of the following is an evolutionary trend commonly observed in organisms?
Options:
A) Decreased complexity over time
B) Increased dependence on external resources
C) Increased genetic diversity within populations
D) Decreased adaptation to the environment
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The correct answer is C .
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Question 612: When it is cold, the blood vessels of the skin
Options:
A) dilates to increase the amount of blood flowing
B) constrict to reduced the amount of blood flowing to the skin
C) dilate to reduce the amount of blood flowing to the skin
D) constrict to increase the amount of blood flowing to the skin
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The correct answer is B .
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Question 613:
Metamorphosis is a biological process that involves
Options:
A) The growth and development of an organism from a zygote to an adult
B) The change in form and structure during the life cycle of certain organisms
C) The regeneration of lost body parts in an organism
D) The transformation of an organism from an adult stage to a larval stage
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The correct answer is B .
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Question 614: The organelle common to both plant and animal cells is the
Options:
A) centrioles
B) plasmalemma
C) cell wall
D) chloroplast
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The correct answer is B .
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Question 615:
As the tadpole develops, the structure labelled 5
Options:
A) grows longer
B) becomes shorter
C) becomes the hind legs
D) remains unchanged
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The correct answer is B .
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Question 616: Which of the following instruments is used for measuring atmospheric pressure?
Options:
A) Hydrometer
B) Hygrometer
C) Thermometer
D) Barometer
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The correct answer is D .
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Question 617:
Which of the following is a difference between plant and animal cells?
Options:
A) Plant cells have a nucleus, while animal cells do not
B) Plant cells have a cell membrane, while animal cells have a cell wall
C) Plant cells contain chloroplasts for photosynthesis, while animal cells do not
D) Plant cells have a central vacuole, while animal cells have multiple small vacuoles
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The correct answer is C .
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Question 618: The tissue which connects a muscle to a bone is a
Options:
A) cartiligae
B) muscle fibre
C) tendon
D) ligament
E) connecting fibre
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The correct answer is C .
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Question 619: In anaerobic respiration, glucose is converted to one of the following
Options:
A) Carbon dioxide and water
B) Carbon dioxide only
C) Carbon dioxide and alcohol
D) Alcohol and water
E) water and acetic acid
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The correct answer is C .
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Question 620: Any dry fruit which can break into several parts each containing one seed is a
Options:
A) capsule
B) aggregrate fruit
C) legume
D) schizocarp
E) follicle
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The correct answer is D .