Which of these is NOT a type of blood clot?
Correct answer B. Atheroma
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Biology MCQs
Page 24 of Biology multiple-choice questions with answers. Tap an option to check yourself.
Page 24 of 75
What is the term for bleeding from a ruptured blood vessel in the brain?
Correct answer A. Cerebral haemorrhage
What keeps lymph flowing through the lymphatic vessels?
Correct answer D. All of these
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What type of immunity results from introducing a vaccine into the body?
Correct answer B. Artificially induced active immunity
What share of total transpiration takes place through lenticels?
Correct answer D. 1-2%
Which structure is not present in all plants?
Correct answer A. Lenticels
In exceptional cases, about how high can the positive hydrostatic pressure produced by root pressure reach?
Correct answer B. 800 kPa
In plants other than tall ones, what is the usual speed at which water moves upwards?
Correct answer D. 1 m h⁻¹
Which component of the plant cell wall has a strong affinity for water?
Correct answer C. Pectin
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Which potential measures the change in a system’s water potential caused by the presence of solute molecules?
Correct answer A. Osmotic
What is the movement of water molecules across a membrane from higher to lower water potential called?
Correct answer B. Osmosis
What is the pressure called that builds up when water enters and swells a plant cell?
Correct answer A. Pressure
How many major factors determine water potential in plants?
Correct answer C. Two
What are the cytoplasmic strands that pass through pores in neighbouring plant cell walls called?
Correct answer A. Plasmodesmata
In root cells, which pathway is interrupted at the endodermis by the Casparian strip?
Correct answer A. Apoplast
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How are neighbouring plant cells connected to each other?
Correct answer D. Both A and B
Active transport depends on which process?
Correct answer C. Respiration
Along which pathway do ions diffuse together with water by mass flow?
Correct answer C. Apoplast
What is the membrane surrounding a plant vacuole called?
Correct answer C. Tonoplast
What kind of process is involved when plants take up water?
Correct answer B. Passive transport