IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Interaction with environment-Nervous System
Topic :Interaction with environment– Weightage : 21 %
All Questions for Topic : Tropism,Senses,Nervous System,Receptors and hormones
Question:
Bone tissue is shown pale yellow on this CT scan. Identify the five bones that are visible.
▶️Answer/Explanation
Ans: One vertebra (lower centre) four ribs (near body surface in lower half of scan).
Question:
The small intestine is visible in the centre and right of the CT scan. Describe and explain its appearance in the scan.
▶️Answer/Explanation
Ans: Many separate circular or ovoid sections; intestine is a tubular structure which twists and turns so passes through the plane of the scan repeatedly.
Question:
Discuss whether the movement of an impulse along a nerve fiber is an example of reaction or interaction.
▶️Answer/Explanation
Ans: Reaction – because one point along the neuron influences the next region but is not itself influenced by that next region.