Put each feature in a group: morphological, physiological or behavioural…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Put each feature in a group: morphological, physiological or behavioural.
- The thick layer of fat under the skin of a seal.
- A desert lizard that basks in the morning and hides in the shade at noon.
- The very concentrated urine of the kangaroo rat.
- The spines on Opuntia.
- The faster breathing of a person at a high altitude.
- A desert animal that burrows into the soil.
Need a reminder? The key ideaShow
A ball of radius has the surface area and the volume . So its surface for each unit of volume is . Allen's rule: shorter ears and limbs in cold climates. At high altitude, the body makes more red cells, haemoglobin binds oxygen less, and breathing is faster.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) Morphological (the blubber).
Step 2. (b) Behavioural.
Step 3. (c) Physiological.
Step 4. (d) Morphological. The leaves are reduced to spines.
Step 5. (e) Physiological, and it is a short compensation, not an adaptation fixed in the genes.
Step 6. (f) Behavioural.
Answer: (a) morphological; (b) behavioural; (c) physiological; (d) morphological; (e) physiological; (f) behavioural.
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