Explanation

• Amphibians are animals that live both in water and on land.
• Most amphibians lay their eggs in water because their eggs do not have a protective shell.
• Examples of Amphibians: Frog, Toad, Salamander, Newt, Caecilian

Last verified on 07-03-2026

Explanation

Penguins are the birds which do not fly but swim to go from one place to another.

Penguins have flippers which help them swim underwater.

Penguin means پنکھ دار بحری پرندہ

Explanation

An invertebrate is an animal without a backbone.

Worms, like earthworms, are classified as invertebrates.

They lack a backbone and are found in various environments. 

Explanation

Female ostriches lay the largest eggs of any living bird.

These gigantic birds are the biggest birds on the planet.

Explanation

Triploblastic animals have three germ layers (ectoderm, mesoderm, endoderm).

Roundworms (Nematodes) are triploblastic.

Explanation

The roundworm, also known as a nematode, is an invertebrate that possesses a pseudocoelom. 

Explanation

Fishes have only two chambers of the heart

01. Atrium

02. Ventricle

Explanation

Shark is the example of Fish

Sharks are a species of fish.

shark is a fish not mammal fish because:

1. They are not mammals because they lack all of the characteristics that define mammals.
2. They don't have warm blood, for example.
3. Sharks are classified as fish, despite the fact that, unlike most fish, their skeleton is made of cartilage.

Explanation

Stiffening fibers traverse the jelly and in some jellyfish, the mesoglea can form hardened plates, rather like cartilage, that hinge together.

These plates provide support for the animal and the muscles may attach to these plates,

so they function as a skeleton.

But jelly fish does not have a proper skeleton.