BIOLOGY [2 Mark Question Answer]

Species means an organism of a particular kind whose members can interbreed among themselves to produce fertile young ones.
All humans on the earth today may differ widely in their facial features, colour, height, etc. Yet, they belong to a single speciesHomo sapiens because they can interbreed among themselves and produce a normal offspring.

In science, people from different countries with different languages have to read about each others research. So, it was necessary to eliminate any possible confusion created by local names. Scientific names are based on certain rules which are universal. They are unique and can be used to identify an organism anywhere around the world. That is why scientific names of living beings are considered better than their common names.

Similarity	Difference
Cold-blooded animals	Wall lizard	Frog
	Completely adapted to life on land	Live partly on land and partly in water

Similarity	Difference
Marine animals	Cuttlefish	Dogfish
	Invertebrates	Vertebrates

Similarity	Difference
Breathe through lungs	Bat	Pigeon
	Have external ears	Have internal ears

Similarity	Difference
Do not have any limbs	Snakes	Earthworm
	Vertebrates	Invertebrates

Similarity	Difference
Aquatic	Whales	Fishes
	Have lungs for breathing	Have gills for breathing

Similarity	Difference
Have wings	Insects	Birds
	Invertebrates	Vertebrates