Explanation

Fishes have only two chambers of the heart

01. Atrium

02. Ventricle

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

Amphibian eggs can be laid in the water (top) or on land in moist environments (bottom). 

Most females lay eggs in the water and the babies, called larvae or tadpoles, live in the water

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ND18-1-2023

Explanation

Elephants, bears, chickens, monkeys, cows, wolf, birds, etc. are warm blooded animals

Warm blooded means گرم خون والا

Explanation

Worm means رینگنے والا جانور جس میں ریڑھ کی ہڈی نہ ہو

Explanation

Female ostriches lay the largest eggs of any living bird.

These gigantic birds are the biggest birds on the planet

Explanation

Sphenophytes, fossil and living, characteristically have whorled leaves and branches and conspicuously jointed stems, which in many cases are also ribbed.

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.