Advertisements
Advertisements
प्रश्न
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Hydathodes are similar to stomata in plant physiology.
विकल्प
True
False
Advertisements
उत्तर
False
Reason: Hydathodes are special pores present on the ends of leaf veins through which guttation occurs and water droplets are given out. Their openings cannot be regulated. Stomata on the other hand are minute openings in the epidermal layer of leaves through which exchange of gases as well as transpiration occurs. Water is given out as water vapour. Stomatal opening is regulated by guard cells.
संबंधित प्रश्न
Mention the two ways in which transpiration helps the plants.
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Most transpiration occurs during midday.
From which structure cuticular transpiration occur in plants?
Choose the correct answer:
Transpiration generates __________
Explain the Term :
Hydathode
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental set-up was placed in bright sunlight. Study the diagram and answer the following questions:
- Name the process intended for the study.
- Define the above mentioned process.
- When the weight of the test tubes (A and B) is taken before and after the experiment, what is observed? Give reasons to justify your observations in A & B.
- What is the purpose of keeping the test tube B in the experimental set-up?
- What is the purpose of putting oil in the test tube?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Transpiration is a physiological process
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The pH of the guard cells increases during day time
State the Location:
Cuticle
