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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ९

State whether true or false. If false, correct the statement. When the weather is hot, water evaporates lesser which is due to opening of stomata.

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प्रश्न

State whether true or false. If false, correct the statement.

When the weather is hot, water evaporates lesser which is due to opening of stomata.

विकल्प

  • True

  • False

MCQ
सत्य या असत्य
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उत्तर

False.

Correct Statement: When the weather is hot, water evaporates faster which is due to opening of stomata.

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 19: Plant Physiology - Exercise [पृष्ठ २३१]

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सामाचीर कलवी Science [English] Class 9 TN Board
अध्याय 19 Plant Physiology
Exercise | Q IV. 3. | पृष्ठ २३१

संबंधित प्रश्न

The diagrams given below represent the relationship between a mouse and a physiological process that occurs in green plants. Study the diagrams and answer the questions that follow

(i) Name the physiological process occurring in the green plant that has kept the mouse alive.
(ii) Explain the physiological process mentioned above.
(iii) Why did the mouse die in bell jar B?
(iv) What is the significance of the process as stated in (i) for life on earth?
(v) Represent the above mentioned physiological process in the form of a chemical equation.

 


The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both testtubes are kept in sunlight. Answer the questions that follow:

(i) Name the physiological process that releases the bubbles of oxygen.
(ii) Explain the physiological process as mentioned above in Q2 (a)(i).
(iii) What is the purpose of keeping a snail in test-tube ‘B’?
(iv) Why does test-tube ‘B’ have more bubbles of oxygen?
(v) Given an example of a water plant that can be used in the above process.
(vi) Write the overall chemical equation for the above process.


Define the following:

Organic food


Fill in the blanks:
The end products of photosynthesis are ______ and ______.


Complete the following sentence with appropriate word:

A plant that does not perform photosynthesis is _______.


Choose the correct option.

The net result of photo-oxidation of water is release of ______.


Choose the correct option.

In presence of high concentration of oxygen, RuBP carboxylase converts RuBP to ______.


What will happen if we remove the fish from the aquarium and keep it (with green plants) in a dark place?


Only green plants have the unique capacity to release ______ into the atmosphere.


A potted plant with variegated leafes was kept in dark for 24 hours and then placed in bright sunlight. Answer the following questions.

  1. Which aspect of photosynthesis is being tested in the above diagram?
  2. Why was the plant kept in the dark for 24 hours?
  3. After the starch test, what will be the colour of the yellow and green parts of the leaf? Give reasons to support your answer.

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