EASY
Earn 100

"Transpiration is a necessary evil". Explain.

Important Questions on Transport in Plants

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. 

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Choose the correct combination.

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.
HARD
Biology>Plant Physiology>Transport in Plants>Transpiration
"Transpiration is a necessary evil". Explain.
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
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.

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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.
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
Which of the following is not the type of transpiration
MEDIUM
Biology>Plant Physiology>Transport in Plants>Transpiration
In terrestrial habitats, temperature and rainfall conditions are influenced by
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
Potometer and clinostat are used to study
HARD
Biology>Plant Physiology>Transport in Plants>Transpiration

Read the following statements and choose the correct option 

Statement A: Stomata are absent in submerged hydrophytes.

Statement B : Respiration occurs by means of air chambers in submerged plants.

EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
Which of the following is used to determine the rate of transpiration in plants?
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
If the rates of transpiration and water absorption of a flowering plant are measured over a period of twenty four hours, it is found that the rate of transpiration reaches its peak at about mid-day and then declines, whereas the peak for water absorption is reached approximately two hours later. Which one the following statements provides the best explanation of these results
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
Which is/are NOT the characteristics of the guard cell?
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
Rate of transpiration is high
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
In which of the following condition transpiration will be minimum?
MEDIUM
Biology>Plant Physiology>Transport in Plants>Transpiration
An adaptation for better gaseous exchange in plant leaves is
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
Which of the following plant is found to have minimum transpiration?
EASY
Biology>Plant Physiology>Transport in Plants>Transpiration
In hydrophytes, the rate of carbon assimilation is