Structure of the Atom — Science STD 9 — Question

Increase in oil production is:

1. Golden revolution.
2. Yellow revolution.
3. White revolution.
4. Blue revolution.

Health deals with:

1. Social well being.
2. Physical fitness.
3. Mental fitness.
4. All the above.

Which type of tissue forms glands?

1. Connective
2. Epithelial
3. Nervous
4. Muscle

An apple of mass 100g falls from a tree because of gravitational attraction between the earth and the apple. If the magnitude of force exerted by the earth on the apple be F₁, and the magnitude of force exerted by the apple on the earth be F₂, then:

In which of the following cases of motion, the distance moved and the magnitude of displacement are equal?

Balanoglossus belons to Hemichordata which forms a connecting link between:

1. Urochordates and cephalochordates.
2. Urochordates and vertebrates.
3. Cephalochordates and vertebrates.
4. Nonchordates and chordates.