Force and Laws of Motion — Science STD 9 — Question

What is the structural and functional unit of living organisms?

The element which is required in largest quantity by plants is:

1. Sulphur
2. Calcium
3. Phosphorus
4. Nitrogen

Which of the following is a mismatch?

1. Leprosy- bacterial infection.
2. AIDS- bacterial infection.
3. Malaria- protozoan infection.
4. Elephantiasis- nematode infection.

Simple epithelium is a tissue in which cells are:

1. Hardened and provide support to organs.
2. Continuously dividing to provide to form an organ.
3. Cemented directly to one another to form a single layer.
4. Loosely connected to one another to form an irregular layer.

Value representing the number of protons in an element:

A rectangular wooden block has length, breadth and height of 50 cm, 25cm and 10cm, respectively. This wooden block is kept on ground in three different ways, turn by turn. Which of the following is the correct statement about the pressure exerted by this block on the ground?

1. The maximum pressure is exerted when the length and breadth form the base.
2. The maximum pressure is exerted when length and height form the base.
3. The maximum pressure is exerted when breadth and height form the base.
4. The minimum pressure is exerted when length and height form the base.

Areolar connective tissue is found between:

1. Blood vessels and nerves.
2. Skin and muscles.
3. In the bone marrow.
4. All the three.

A cell placed in solution swells up. The solution is:

Binomial nomenclature consists of two words:

1. Genus and species.
2. Order and family.
3. Family and genus.
4. Species and variety.

Who is popularly known as ‘water man’?

1. Gajendra Singh.
2. Rajendra Singh.
3. Louis Pasteur.
4. Tansley.