Which one of the following is  a gymnosperm?

Five kingdom classification was proposed by

The fundamental basic taxonomical unit of classification is

Which one of the following hierarchial categories is the top taxonomical category?

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

Whittaker proposed the classification of organisms into

Which one of the following is the example of Thallophyta?

Fern is an example of

The organisms of kingdom protista are