Consider the following animals : 1. Hedgehog 2. Marmot 3. Pangolin To reduce the chance of being captured by predators, which of the above organisms rolls up/roll up and protects/protect its/their vulnerable parts?

Describes a biological use of 'rolling' (leaf margins roll up) as a mechanical response to trap and isolate an organism.

A student could generalize that rolling or curling can serve defensive or containment functions and look for animals that curl to protect body parts.

Explains that movement can be a response to environmental changes and used to an organism's advantage (e.g., avoid threat).

A student could treat curling into a ball as a movement triggered by threat and check ethology sources or field observations for such threat-response behaviors in hedgehogs.

Describes animal defensive adaptations (camouflage, tusks, strength) that reduce vulnerability to predators.

A student could categorize curling into a ball as another defensive adaptation and compare it with listed defenses to assess plausibility.

Discusses how protection (parental care) affects survival chances, illustrating the general principle that protective behaviours/structures improve survival.

Use the general survival-benefit principle to hypothesize that a behaviour like curling would be beneficial against predators and then seek species-specific evidence.