Biodiversity is generally highest in:

Starfish, jellyfish and silverfish show that common names are:

Biodiversity is best described as:

Plants and algae help to regulate the climate mainly by:

The International Day for Biological Diversity is observed every year on:

Approximately how many kinds of organisms have been identified and classified so far?

The main aim of biological classification is to:

Out of the known kinds of organisms, animals number about:

Which is now the highest taxonomic rank?

The classification system devised by Carl Linnaeus in 1735 had how many ranks?

Which of the following shows the correct descending order of taxonomic ranks?