Tissues — Science STD 9 — Question

A plant body not differentiated into root, stem and leaves is termed as:

1. Thallus.
2. Mycelium.
3. Hyphae.
4. Herb.

Tincture of iodine has antiseptic properties. This solution is made by dissolving:

The number of cycles an oscillator completes in each second is called its _______________:

Mitochondria are seats of:

1. Aerobic respiration.
2. Krebs cycle of aerobic respiration.
3. Glycolysis of aerobic respiration.
4. Anaerobic respiration.

Which one of the following species of honey bee is an Italian species?

All the elements of life support system are:

1. Inter-related.
2. Inter-dependent.
3. Interconnected.
4. All the above.

An insect which transmits a disease is known as:

1. Intermediate host.
2. Parasite.
3. Vector.
4. Prey.

Growing different crops in the same field in a pre-planned succession, to improve the quality and quantity of the crop yield and maintain the fertility of soil is known as:

If the displacement of an object is proportional to the square of time, then the object is moving with:

1. Uniform velocity.
2. Uniform acceleration.
3. Increasing acceleration.
4. Decreasing acceleration.

Arthropods are characterised by:

1. Jointed legs.
2. Jointed appendages.
3. Chitinous exoskeleton.
4. All the above.