Collect some aquatic plants-cut the leaves and stems. Observe them under microscope and record your observations like air presence/absence of air spaces etc and answer the below:
Why do they float on water?

Collect some aquatic plants-cut the leaves and stems. Observe them under microscope and record your observations like air presence/absence of air spaces etc and answer the below: What make them float?

Collect some aquatic plants-cut the leaves and stems. Observe them under microscope and record your observations like air presence/absence of air spaces etc and answer the below: Are there any other reasons for their floating?

Collect some aquatic plants-cut the leaves and stems. Observe them under microscope and record your observations like air presence/absence of air spaces etc and answer the below: Draw a diagram of what you have observed under microscope?

Collect an aquatic plant like hydrilla or vallisneria. Also collect any terrestrial plant. Now compare the two and write your.observations On the basis of your observations write how the aquatic is suited to live in water?

Collect different kinds of leaves from your surroundings and observe the shapes of the epidermal cells under microscope.Make a table, which contains serial number,name of the leaf,shape of the leaf,shape of the epidermal cells. Do not forget to write specific findings below the table.

Cut a transverse section of young stem of a plant from your school garden and observe it under the microscope. How would you ascertain whether it is a monocot stem or dicot stem? Give reasons.

In the pond , we find that different organisms live in different regions. This is due to some conditions like availability of different amount of food, air, light etc. Now let us study the table 4 , showing organisms living in different regions of a pond and answer the question. Are the leaves of all plants growing in a pond, similar? What is the difference between the leaves of a plant growing at the bottom (hydrilla) and.that floating on the surface (lotus)? Try to think and write why we find such differences.

Collect the salt samples like sodium chloride, aluminium chloride, copper sulphate, sodium acetate, ammonium chloride, sodium hydrogen carbonate and sodium carbonate. Dissolve them in distilled water. Check the action of these solutions with litmus papers. Find the pH using pH paper. Classify them into acidic, basic or neutral salts. Identify the acid and base used to form the above salts. Record your observations in table