Download App

Tissues — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceTissues2 Marks
Question
Water hyacinth float on water surface. Explain.
✓

Answer

A special type of parenchyma; called aernchyma is present in water hyacinth. This tissue has air filled spaces inside and because the air gets trapped inside especially in the stem part so it becomes buoyant. Due to this, water hyacinth floats on water surface.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Que-Ans (Each of 2 Mark )" from Tissues→Tissues — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

Animals of colder regions and fishes of cold water have thicker layer of subcutaneous fat. Describe why?
→
Why it is required to use kilowatt-hour as commercial unit of energy.
→
The power of a motor pump is $2 kW$ . How much water per minute the pump can raise to a height of $10 m$ ? (Given $g =$
$\left.10 ms^{-2}\right)$
→
How will you test whether a given solution is a colloidal solution?
→
Define buoyant force. Name two factors on which buoyant force depends.
→
Explain why, wooden (or concrete) sleepers are kept below the railway line.
→
Define buoyant force. Name two factors on which buoyant force depends.
→
A solution of alcohol in water has been prepared by mixing
$100\ ml$ of alcohol in $300\ mL$ of water. Calculate the volume percentage of the solution.
→
What can you say about the motion of an object whose distance - time graph is a straight line parallel to the time axis?
→
Why are railway tracks laid on large-sized concrete sleepers? Explain.
→