Experiments Conducted to Prove the Formation of Starch in Plants

Q.

What is the importance of photosynthesis?

Q.

Write an experiment that shows that sunlight is important for photosynthesis.

Q.

What are the Disadvantages of cutting trees?

Q.

During the process of photosynthesis, the food formed is in the form of .

Q. Why do plants require carbon dioxide?

Q. During photorespiration, RuBP binds with O${}_2$ to form

1. 1 molecule of PGA only
2. 1 molecule of PGA and 1 molecule of phosphoglycolate
3. 2 molecules of PGA
4. 1 molecule of 3C compound and 1 molecule of 4C compound

Q. Pick out the common storage places of starch in plants.

1. Amyloplasts
2. Roots
3. Seeds

4. All of the above

Q. I read that photosynthesis is an anabolic pathway and respiration is catabolic pathway , but my doubt is, even in photosynthesis, in light phase the energy I mean ATP is released. then why we consider photosynthesis as an anabolic pathway?

Q. Write any five significances of photosynthesis.

Q. How can we say that photosynthesis is the basic energy source for the living world?

Q. Which of the following would give a positive test with iodine solution?

1. Vitamin A
2. Starch
3. Protein
4. Butter

Q. The chemical compound used to prove that ${\mathrm{CO}}_2$ is essential for photosynthesis was

1. KOH
2. KCl
3. none of these
4. NaCl

Q.

How does photosynthesis work simply?

Q.

Write the steps involved in the starch test.

Q. Why is the leaf boiled in water and alcohol before testing for the presence of starch?

Q. If $C{O}_2$ is given off in respiration, why does the amount of $C{O}_2$ in the atmosphere remains relatively constant?

1. $C{O}_2$ forms carbonate rocks
2. $C{O}_2$ is buffer
3. $C{O}_2$ is converted in photosynthesis to carbohydrates
4. $C{O}_2$ splits up during photosynthesis

Q.

Which pathway utilizes both Photosystem I and Photosystem II?

1. Fermentation

2. Krebs cycle

3. Light-independent reactions

4. Non-cyclic electron pathway

Q. Which of the following components was common to both variegated leaf experiment and Mohl’s half leaf experiment?

1. KOH
2. Cladophora
3. Iodine
4. Purple and green sulphur bacteria

Q. which of the following is the first kind of food material the green plants prepare in their body?

1. Starch
2. glucose
3. Proteins
4. Fats

Q.

What is needed for carbon fixation?

Q. First visible product of photosynthesis is

1. Glucose
2. Sucrose
3. Cellulose
4. Starch

Q.

Which of the following measures helps in maintaining the balance of oxygen and carbon dioxide in nature?

1. Discourage carpooling

2. Encourage cutting down of trees

3. Use of fossil fuels like petrol and diesel

4. Use of cleaner fuels like CNG

Q.

Explain photochemical reaction.

Q. Explain why photosynthesis is considered the most important process in the biosphere.

Q. The biological activity of IAA is tested by

1. a-amylase test
2. Avena curvature test
3. Xanthium leaf disc test
4. soyabean callus test

Q. Which of the following equation can be appropriate for photosynthesis?

1. None of the above
2. $12C{O}_2+6H_{2}O\to 2C_6{H}_{12}{O}_6+6O_2$
3. $6C{O}_2+12H_{2}O\to C_6{H}_{12}{O}_6+6H_{2}O+6O_2$
4. $6C{O}_2+7H_{2}O\to C_2{H}_{12}{O}_6+6O_2$

Q. The most common storage form of glucose in plants is

1. starch
2. glycogen
3. chitin
4. cellulose

Q.

The carbon cycle is the natural process by which water is circulated throughout the earth.

1. True
2. False

Q. The most common storage form of glucose in plants is

1. starch
2. glycogen
3. chitin
4. cellulose

Q. If in a green plant, the rates of respiration and photosynthesis are equal, the plant will be?

1. Taking in carbon dioxide
2. Giving out oxygen
3. Taking in carbon dioxide and giving out oxygen
4. Giving out water vapour