Tissues — Science STD 9 — Question

The law of conservation of energy implies that the:

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:

1. F₁ is very much greater than F₂
2. F₂ is very much greater than F₁
3. F₁ is only a little greater than F₂
4. F₁ and F₂ are exactly equal.

Nasal and genital tracts are lined by:

1. Simple columnar.
2. Stratified columnar epithelium.
3. Pseudostratified epithelium.
4. Stratified cuboidal epithelium.

Growing different crops in the same field in a pre planned succession is:

Mitochondria are the seat of:

1. Anaerobic respiration.
2. Trapping of sunlight.
3. Krebs cycle.
4. Calvin cycle.

A body at maximum height possesses:

The structure that are involved in the manufacture and supply of energy to the cell are:

Rutherford’s alpha particle scattering experiment led to the discovery of:

1. Nucleus.
2. Electrons.
3. Protons.
4. Neutrons.

While running you possess certain kind of energy due to motion .What kind of energy do you possess?

Plasma membrane is:

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