EASY
Earn 100

During the opening of stomata, the organic malate ions are produced in the guard cells for maintaining the:

50% studentsanswered this correctly

Important Questions on Transport in Plants

EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
Stomata in grass leaf are
MEDIUM
Biology>Plant Physiology>Transport in Plants>Transpiration
Three uniformly watered plants i, ii and iii were kept in 45% relative humidity, 45% relative humidity with blowing wind and 95% relative humidity, respectively. Arrange these plants in the order (faster to slowest) in which they will dry up.
MEDIUM
Biology>Plant Physiology>Transport in Plants>Transpiration
Take two plants, keep plant A in very dry conditions and plant B in high humidity. Simultaneously, immerse the roots of both plants in water with a red dye. What would you observe?
MEDIUM
Biology>Plant Physiology>Transport in Plants>Transpiration
Which of the following facilitates opening of stomatal aperture?
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
Transpiration and root pressure cause water to rise in plants by:
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
If the humidity of the atmosphere suddenly increases substantially, the water flow in the xylem will-
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration

Identify the correct match of the type of water given in column-I and its character in column-II and select the correct option.

Column-I Column-II
(i) Capillary water (a) present in the form of hydrated oxides of silicon and aluminium.
(ii) Hygroscopic water (b) goes down through large pores between soil particles and reaches the water table.
(iii) Combined water (c) held in between small non-colloidal soil particles.
(iv) Gravitational water (d) held tightly around soil particles by adhesive forces.
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
Which one of the following anatomical structures is involved in guttation?
 
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is
MEDIUM
Biology>Plant Physiology>Transport in Plants>Transpiration

Study the diagram and the list given below.

Question Image

i) Chloroplast

ii) Epidermal cell

iii) Guard cell

iv) Subsidiary cell

v) Stomatal pore

The correct match is

EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
Draw a diagram of stomata of Rheo leaf and write any two functions of stomata.
MEDIUM
Biology>Plant Physiology>Transport in Plants>Transpiration

Choose between the two options to answer the question specified in the brackets for the following.

An example is illustrated below.

Example: Corolla or Calyx (Which is the miter whorl?) Answer: Calyx

Lenticels or stomata (Which one remains open always?) 

HARD
Biology>Plant Physiology>Transport in Plants>Transpiration
"Transpiration is a necessary evil". Discuss.
MEDIUM
Biology>Plant Physiology>Transport in Plants>Transpiration
Stomatal movement is not affected by
HARD
Biology>Plant Physiology>Transport in Plants>Transpiration
"Transpiration is a necessary evil". Explain.
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration

Given below is a diagram of the stomatal apparatus. Match the labels with the corresponding names of the compounds. 

Question Image

Choose the correct combination.

HARD
Biology>Plant Physiology>Transport in Plants>Transpiration
Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening, carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of the following options:
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
Which one gives the most valid and recent explanation for stomatal movements?
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
In barley type of plant, the stomata open
MEDIUM
Biology>Plant Physiology>Transport in Plants>Transpiration
The immediate cause of the opening or closing of stomata is