20. Name the process associated with the following: (i) Dry ice is kept at room temperature and at one atmospheric pressure. (ii) A drop of ink placed on the surface of water contained in a glass spreads throughout the water. (iii) A potassium permanganate crystal is in a beaker and water is poured into the beaker with stirring. (iv) A acetone bottle is left open and the bottle becomes empty. (v) Milk is churned to separate cream from it. (vi) Settling of sand when a mixture of sand and water is left undisturbed for some time. (vii) Fine beam of light entering through a small hole in a dark room, illuminates the particles in its paths.

SUB : BIOLOGY

DAY 1 : Prepare a model of plant cell by using household materials like rice,

plastic bottles, wires, cardboard etc..

DAY 2 : Prepare a venn diagram of plant cell and animal cell ( similarities in

middle & differences in side )

DAY 3 : Make a flow chart of Tissues ( plants and animals) by using printed

diagrams or coloured diagrams

DAY 4 : Prepare a note on Types of tissues and there location and functions in a

tabular form

Prepare a plant cell model by household materials. Like rice ,plastic,cardboard.etc."*"

The cell theory states that

• A. All cells have nuclei.
• B. All cells are totipotent.
• C. Cells reproduce by mitosis.
• D. Cells are the basic structural units of living beings.

List the point of difference between Homogeneous and Heterogeneous mixtures

Turmeric is a natural indicator. On adding its paste to acid and base separately, which color is observed?

A. yellow in both acid and base

B. yellow in acid and red in the base

C. Pink in acid and yellow in the base

D. Red in acid and blue in the base.