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/protects its/their vulnerable parts?

The correct option is 1 and 3 only.

Let us analyze each animal given in the question to understand their defense mechanisms against predators:

1. Hedgehog:
Hedgehogs possess sharp, stiff spines covering their back and sides. When threatened by a predator, a hedgehog contracts its muscles to roll into a tight ball. This curling behavior tucks its vulnerable face, soft belly, and limbs safely inside, exposing only an armor of prickly spines to predators.

2. Marmot:
Marmots are large ground squirrels. They do not roll up into a ball for defense. Instead, they rely on vigilance, alarm calling, and fast sprinting into their underground burrows when predators approach.

3. Pangolin:
Pangolins are covered in tough, overlapping keratin scales. When attacked or frightened, a pangolin rolls itself tightly into a sphere or ball. This hides its soft underside and presents a hard, scaley outer surface that is virtually impenetrable to most predators.

Therefore, both the hedgehog (1) and the pangolin (3) roll up to protect their vulnerable parts from predators.