Advertisements
Advertisements
Question
Choose the correct answer:
Meaning of ascent of sap is ____________
Options
absorption of water from soil.
alteration of water against gravitational force.
reaching of water upwards against gravitational force.
origin of cohesive force in water.
Solution
Meaning of ascent of sap is reaching of water upwards against gravitational force
APPEARS IN
RELATED QUESTIONS
Three plants (a), (b) and (c) were placed in beakers containing coloured water. The water in each beaker was covered with a layer of oil. The leaves were removed from plant (b), while plant (c) was exposed to strong light.
(i) In which plant, (a), (b) or (c) would the water move up the fastest?
(ii) In which plant (a), (b) or (c), would the water move up slowly?
(iii) Why was the water covered with a layer of oil?
(iv) What is being investigated by this experiment?
The diagram below represents a layer of epidermal cells showing a fully grown root hair. Study the diagram and answer the questions that follow:
Draw a diagram of the above root hair cell as it would appear when a concentrated solution of fertilizers is added near it.
Draw a diagram of the root hair cell as it would appear when a concentrated solution of fertilizers is added near it.
Give Technical Term for the following.
Phenomenon of absorption of water by surface attraction.
In the zone of absorption, epidermal cells form unicellular hair-like extensions called ________.
Plasma Membrane is ______.
Water which is absorbed by roots is transported to aerial parts of the plant through ______
Epiphytic plants like orchids absorb water vapours from air with the help of epiphytic roots having special tissue called ____________.
Identify the part of the plants which is responsible for maximum absorption of water.