___________ component of cell wall has grreat affinity with water?

A. Lignin
B. Cellulose
C. Pectin
D. All of these

Commonly in other plants than tall ones the speed of upward movement of water is____________?

A. 8mh-1
B. 1 mh-1
C. 7 mh-1
D. 4 mh-1

Exceptionally the positive hydrostatic pressure generated by root pressure is about___________?

A. 600 kpa
B. 800 kpa
C. 1000 kpa
D. 900 kpa

Cuticular transpiration is _________ of total transpiration?

A. 6-8%
B. 5-7%
C. 7-9%
D. 4-6%

In plants, water potential is determined by major factors?

A. Three
B. Four
C. Two
D. Five

The pressure generated when water enters & inflates plant cells is called ___________ potential?

A. Water
B. Osmotic
C. Pressure
D. Solute

The movement of water molecules from a region of higher water potential to a region of lower water potential (through membrane)

A. Deffusion
B. Osmosis
C. Active transport
D. None of these

___________ potential is the measure of the change in water potential of a system due to the presence of solute molecules?

A. Osmotic
B. Pressure
C. Both of these
D. None of these

Aquatic animals excrete nitrogenous waste commonly in the form of_____________?

A. Ammonia
B. Urea
C. Uric acid
D. Trimethylamine oxide

Marine fish can keep their internal environment hypertonic with respect to the surrounding salty water by retaining.

A. Excessive urea which will increase their internal solute concentration and prevent body shrinkage in hypertonic environment
B. Trimethyl alanine
C. Ammonia
D. Trimethylamine oxide