How many species of higher plants and bacteria are known?

How many species of plants and animals have been named so far?

Comma shaped bacteria are known as:

Try to collect all the currently accepted meanings for the word 'species'. Discuss with your teacher the meaning of species in case of higher plants and animals on one hand, and bacteria on the other hand.

How many species ofmammals and protozoans are known?

How many plant species are used as food?

Fill in the blanks The poisonous substances produced by some pathogenic bacteria are known as……….

An association between roots of higher plants and fungi is called