Trusted by millions of Kenyans
LoginRegister
Study resources on Kenyaplex

Get ready-made curriculum aligned revision materials

Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.

Browse exam papers
Or go directly to:
Class notes Holiday assignments Topical questions Other resources

State the importance of osmosis in plant

State the importance of osmosis in plant

Answers

John
i) Absorption of water from the soil by the root hair cells

ii) Provide support in seedlings, leaves and herbaceous plants, when parenchyma cells are turgid.


iii) Opening and closing of Stomata

iv) Distribution of water from cell to cell

v) Feeding in insectivorous plants

Absorption of water from the soil: roots hairs of plants absorb water from the soil by osmosis. This is the same process that helps in water distribution from cell to cell in the body.

Opening and closing of stomata: the guard cells make glucose through the process of photosythensis in the presence of light. As the glucose accumulates in the guard cells, their osmotic pressure increases and this causes them to draw water from adjacent epidermal cells by osmosis. This causes the guard cells to be turgid and thus opens. At night, the guard cells do not make glucose and therefore the glucose level reduces leading to the lowering of osmotic pressure. The guard cells lose water, become flaccid and therefore the stomata closes.

Feeding of insectivorous plants: these plants trap insects using structures that suddenly change their turgor pressure when distributed. The change in turgor pressure causes such structures to close trapping the insects which are digested and are a source of amino acids.
johnmulu answered the question on April 28, 2017 at 13:45

Answer Attachments

Next: Why is oxygen important in the process of active transport in cells?

Previous: An experiment was set up as shown below

View more Biology Questions and Answers  |  Return to Questions Index

Exams With Marking Schemes

Related Questions