Embolism during ascent of sap refers _________

(a)

cavitation in phloem

(b)

gas bubble replacing the water in xylem

(c)

disappearance of gas from xylem

(d)

undisturbed water column

Process of fumigation works on the principle of ______

(a)

Imbibition

(b)

Diffusion

(c)

Active transport

(d)

Passive transport

The term DPD was coined by ______

(a)

Renner

(b)

Munch

(c)

Dixon

(d)

Meyer

________ is a natural antitranspirant.

(a)

O₂

(b)

CO₂

(c)

NO₂

(d)

SO₂

DPD is also called __________

(a)

Turgor pressure

(b)

Osmotic pressure

(c)

Suction pressure

(d)

Wall pressure