Long Distance Transport of Water

Q. Xylem helps in translocation of

1. water and mineral salts
2. organic nitrogen and hormones
3. organic and inorganic solutes
4. both a and b

Q. In plants water, minerals and food generally move by

1. osmosis
2. cyclosis
3. active transport
4. bulk flow

Q. The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of :

1. Transpiration pull
2. Lignified thick walls
3. Cohesion and adhesion
4. Weak gravitational pull

Q. Which of the following is not a component of the theory of transpiration pull of ascent of sap?

1. cohesion of water molecules
2. adhesion of water molecules
3. guttation of water molecules
4. surface tension of water molecules

Q.

Discuss the factors responsible for ascent of xylem sap in plants.

Q. what is bulk flow?

Q. Rate of transpiration higher than rate of water absorption shall cause

1. Growth
2. Leaf fall
3. Wilting
4. Death

Q.

The volume of cork can be found by the displacement method by using a sinker.

1. True
2. False

Q. Discuss the factors responsible for ascent of xylem sap in plants.

Q. Bidirectional translocation of minerals take place in the

1. Xylem tissues
2. Phloem tissues
3. Parenchyma cells
4. Cambium

Q. Transpiration is high in

1. Rainy season / high humidity
2. Winter
3. High temperature
4. Low wind velocity

Q. Tissue taking part in transporting organic nutrients from source or storage region is

1. Phloem
2. Vascular rays
3. Xylem
4. Parenchyma

Q. The driving force for the translocation of organic solutes through phloem is __ gradient

Q. The movement of water and minerals in xylem and the movement of phloem sap in phloem is ............... and .................... respectively

1. Unindirectional, bidirectional
2. Bidirectional, unidirectional
3. Unindirectional, unidirectional
4. Bidirectional, bidirectional

Q. Rupture and fractionation of water column present in tracheary elements does not occur during ascent of sap due to

1. Transpiration pull
2. Weak gravitational pull
3. Cohesion and adhesion
4. Lignified thick walls

Q. For whose conduction is the phloem tissue in plants responsible?

1. Water
2. Salts
3. Sugar
4. Pigments

Q. Ringing experiment to explain ascent of sap path was first done by

1. Hartig and Malpighi
2. Dixon and J. C. Jolly
3. Godlewski and J. C. Bose
4. Stephen hales and Boehm

Q.

Define capillary tube?

Q. Identify relationship.
The difference between xylem and pholem is

1. Xylem transports the food prepared by leaves whereas phloem transports water and minerals absorbed by roots
2. Xylem transports food, water and minerals whereas phloem stores food
3. Xylem stores food whereas phloem transports food, water and minerals
4. Xylem transport water and minerals absorbed by roots whereas phloem transports food prepared by leaves