Advertisements
Advertisements
Question
A few RBC’s were kept in three test tubes containing isotonic, hypotonic and hypertonic solutions. What will be the expected observations after a few hours? Explain.
Advertisements
Solution
The shape and size of the cells will remain unchanged in isotonic solution, because the cells will neither loose nor gain water in it.
Cells will swell up in hypotonic solution as water will enter in it due to endosmosis.
Cells will shrink in hypertonic solution as water will move out of the cell due to exosmosis.
APPEARS IN
RELATED QUESTIONS
The figure given below is a diagrammatic representation of a part of the cross section of the root in the root hair zone. Study the same and then answer the questions that follow
(i) Name the parts indicated by the guidelines 1 to 4.
(ii) Which is the process that enables the passage of water from the soil into the root hair?
(iii) Name the pressure that is responsible for the movement of water in the direction indicated by the arrows. Define it.
(iv) Due to an excess of this pressure sometimes drops of water are found along the leaf margins of some plants especially in the early mornings. What is the phenomenon called?
(v) Draw a well labelled diagram of the root hair cell as it would appear if an excess of fertiliser is added to the soil close to it.
Choose the correct answer:
Process of ascent of sap in plants occurs ___________
Choose the correct answer:
Which tissue makes passage for ascent of sap?
Choose the correct answer:
The water is translocated upwards from the roots through _____________
Draw a cross-section of root showing association of soil particles with root hairs.
Give Technical Term for the following.
Phenomenon of absorption of water by surface attraction.
Describe structure of root hair.
Identify labels x, y, z in the given figure of root showing different regions.
Which part of the root helps in maximum absorption of water and minerals?
Give other name of epidermal cells in roots of plants.
