MEDIUM
Earn 100

Fill in the blank with the correct word from the bracket.

The can draw up water to about 50 metres or more in the tall tree. (root pressure, transpiration pull, guttation)

85.71% studentsanswered this correctly

Important Questions on Plant Physiology

HARD

Given below is an apparatus that was set up to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:
Question Image

(i) Name the process being studied. Define the process.

(ii) Why was the pot enclosed in a rubber sheet?

(iii) Mention two external factors which can accelerate the above process.

(iv) List two adaptations in plants to reduce the above process.

(v) Draw a neat, labelled diagram of a stomatal apparatus.

EASY

Choose the correct answer from each of the four options given below:

Which one of the following does not affect the rate of transpiration?

EASY
If the cobalt chloride paper turns pink, it shows ____________.
MEDIUM
What is the importance of ‘tension’ that is created during transpiration?
EASY
Explain briefly the idea contained during the day transpiration and photosynthesis are interlinked.
EASY
Humid air_____ the rate of transpiration.
EASY

Explain the following terms:

Potometer

EASY
Write briefly as indicated in the brackets of the potometer (Importance and Limitations)
EASY
Name the chemicals that reduce the rate of transpiration. 
EASY

Complete the following pair to represent the relationship between the structure and the special functional activity.

_____ and upward conduction of water.

MEDIUM

Account for the following facts:

Transpiration is the price paid for photosynthesis.

MEDIUM
Name 3 important factors that increase transpiration.
MEDIUM

Give one point of difference between the following pair on the basis of what is given in bracket.

Transpiration and guttation (define the terms).