Biomolecules — BIOLOGY STD 11 Science — Question

Viruses did not find a place in classification since they are not considered truly 'living'.

By which scientist was the method of classification of five kingdoms proposed?

Draw the labelled diagram of the following:

1. Gram seed.
2. VS of maize seed.

Where are the following hormones synthesized in plants: Cytokinin.

A student cultures a callus from the tobacco pith in a sterilised minimal nutritive medium, but adds more cytokinins than auxins. What would develop first from the callus the shoot buds or the roots?

Why are velamen tissues present in epiphytic roots?

For which purpose iron is required by the plants?

Write few common features of all the vertebrates.

What is pulvinus? Give an example of a plant that has pulvinus.

Write two differences between living and non-living.