Whittaker proposed the classification of organisms into

Which one of the following is  a gymnosperm?

The organisms of kingdom protista are

Five kingdom classification was proposed by

Fern is an example of

In five kingdom classification, the blue green algae, nitrogen fixing bacteria and archaebacteria are included in the kingdom of

Which one of the following is the example of Thallophyta?

In Whittaker's classification, the unicellular organisms having various cell organelles included in the kingdom of

The fundamental basic taxonomical unit of classification is