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Biology Quiz Flashcards | StudBud

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Biology Quiz

6 terms·StudBud Administration

Test your knowledge on various biological concepts with these challenging questions on human physiology and plant biology.

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Questions 6

Answers

1
Which role does positive feedback play in fruit ripening?
D
B
C
A
2
What could be an explanation for the results obtained for T1 after a week in the auxin experiment?
Cell differentiation slowed down.
Cell elongation did not occur as auxins could not diffuse downwards.
Mitosis stopped in the apical meristem due to a low auxin concentration.
Cell division along the shoot was inhibited due to a lack of auxins.
3
What is the cause of positive phototropism?
D
A
B
C
4
How does auxin cause plants to respond to changes in the environment?
It causes shoots to grow away from light.
It controls plant growth in the shoot apical meristem.
It ensures that plants are unaffected by changes in the environment.
It prevents plant cell walls from elongating.
5
What will always cause an increase in heart rate?
Nerve impulses from the medulla
High levels of leptin
Signals from the sinoatrial node
Secretion of epinephrine (adrenaline)
6
How is involuntary peristalsis in the intestine directly controlled in humans?
By the central nervous system (CNS)
By the sympathetic nervous system
By the enteric nervous system (ENS)
By the endocrine system