The Fundamental Unit of Life — Science STD 9 — Question

In desert plants, rate of water loss gets reduced due to the presence of:

The system of nomenclature evolved by Linnaeus is:

1. Mononomial.
2. Vernacular.
3. Binomial.
4. Polynomal.

Plasma membrane is:

1. Permeable
2. Selective permeable
3. Semipermeable
4. Impermeable

The structure which forms a barrier between the protoplasm of the cell and its external environment in an animal cell, is:

Who has divided Prokaryota (Monera) into Archaea and Eubacteria?

1. Haeckel.
2. Copeland.
3. Woese.
4. Whittaker.

Metamerism is characteristic feature of:

1. Chordata.
2. Annelida.
3. Mollusca.
4. Nematoda.

The conducting cells of xylem are:

Which one is a micronutrient for the crop plants?

1. Calcium
2. Iron
3. Magnesium
4. Potassium

Name the gas which plays major role in global warming:

1. Carbon monoxide.
2. Nitrous oxide.
3. Carbon dioxide.
4. Sulphur dioxide.

Cuboidal tissue takes part in:

1. Absorption.
2. Secretion.
3. Excretion.
4. All the above.