Improvement in Food Resources — Science STD 9 — Question

Which of the following is parasitic protozoan?

1. Amoeba.
2. Entamoeba.
3. Euglena.
4. Paramecium.

The relative densities of four liquids P, Q, R and S are 1.26, 1.0, 0.84 and 13.6 respectively. An object is floated in all these liquids, one by one. In which liquid the object will float with its maximum volume submerged under the liquid?

One of the following is not a vector quantity. This one is:

1. Displacement.
2. Speed.
3. Acceleration.
4. Velocity.

A very long sticky tongue and ability to change colour occurs in:

1. Garden lizard.
2. Chamaelon.
3. Python.
4. King cobra.