Class 9 chapter 5 the fundamental unit of life activity 5.6 write In experimental form
(eg--
aim
material required
procedure
observation
explaination
conclusion/infrence)
p.s . write the full answer pls
Answers
Explanation:
Activity 5.6
Activity 5.6 class 9 science
A Rhoeo plant
Activity 5.6 asks us to observe Rhoeo leaf under the microscope; compare the osmosis with its leaf boiled in water.
Observation and explanation:
Rhoeo is a common decorative plant found in our home and gardens. Its slides are easy to prepare, so we use them to study cell components and functions.
Under the microscope, we see changes similar to eggs, raisins and dried apricots i.e. swelling in water and shrinkage with saline or sugar solution.
Boiling of leaf breaks the cell wall and other cellular components like cytoplasm. Osmosis in a leaf is a function of protoplasm. As a result, we do not see any change in shape or size in leaf cells whether in water or solution.
Inference/conclusion:
A cell is alive until its protoplasm is functioning. A living cell responds to changes in external osmotic pressure. While a dead cell ceases to show response to osmotic pressure.
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