Advertisements
Advertisements
प्रश्न
Choose the correct answer:
Wilting of plants occurs when ____________
पर्याय
phloem is blocked.
xylem is blocked.
a few old roots are removed.
both xylem and phloem are blocked.
Advertisements
उत्तर
Wilting of plants occurs when xylem is blocked
APPEARS IN
संबंधित प्रश्न
How is root hair adapted for the absorption of water from the soil?
Choose the correct answer:
In ascent of sap water reaches upwards ____________
Study the experimental setup in the figure and then answer the question that follow.
What is meant by 'semipermeable membrane'?
A thin strip of epidermal cells from the fleshy scales of an onion bulb was examined in a drop of water, under a microscope. All the epidermal cells looked alike and the figure alongside represents one of them. The thin strip was then transferred to a drop of strong sugar solution and re-examined under the microscope after about five minutes.
(i) Make a sketch of one of the epidermal cells, as it might appear after immersion in a strong sugar solution. Label any two parts which have undergone a change.
(ii) Give the scientific term for the change shown in Q.(i) above.
(iii) What would you do to bring this cell back to its original condition?
(iv) Give the scientific term used for the recovery of the cell as a result of the step taken in Q.(iii) above.
Give Technical Term for the following.
Phenomenon of absorption of water by surface attraction.
Identify the zone in wbkh root hair occurs.
How many regions are there in a typical root?
Draw a neat and proportionate diagram of root hair and label mitochondria, nucleus and vacuole.
What is peculiarity of epiphytic plants like orchids?
