Tissues — Science STD 9 — Question

If cells of onion peel and RBC are separately kept in hypotonic solution, what among the following will take place? Explain the reason for your.

Plants can be made disease-resistant by:

Delay in the observation of onion cells can lead to:

Which of the following energy is absorbed during the change of state of a substance:

When liquid takes up heat from the surrounding, the surrounding ____________?

The value of G depends on:

Two persons are applying forces on two opposite sides of a moving cart. The cart still moves with the same speed in the same direction. What do you infer about the magnitudes and direction of the forces applied.

Name the stain which is commonly used to study plant cells.

An element has electronic configuration 2, 8, 4. It will be classified as:

Which f the following statement is always correct?

1. An atom has equal number of electrons and protons.
2. An atom has equal number of electrons and neutrons.
3. An atom has equal number of protons and neutrons.
4. An atom has equal number of electrons, protons and neutrons.