Test for CO2 Produced on Germinating Seeds

Q.

What is used to test for the presence of Oxygen?

Q.

In Kreb’s cycle ______.

1. pyruvic acid is converted to CO₂ and H₂O
2. ADP is converted to ATP
3. glucose is converted in CO₂
4. pyruvic acid is converted to ATP

Q.

Heat is generated by seeds during germination.

1. True

2. False

Q.

An experimental setup showed that carbon dioxide is produced by a seed on germination. This carbon dioxide turned the limewater milky. Which process in germinating seeds is responsible for carbon dioxide generation.

1. Expiration

2. Photosynthesis

3. Transpiration

4. Respiration

Q. Experiment to prove that carbon dioxide is produced during respiration in germinating seeds.

Q. Why should be the germinating seeds kept moist during respiration experiment?

1. Both A and B
2. In absence of moisture seeds will dry up and rate of respiration decline significantly.
3. Germinating seeds require moisture for growth.
4. None of the above

Q. A bottle containing germinating seeds is connected to a tube having lime water. After sometime, the lime water turns

1. Red
2. Green
3. Brown
4. White

Q. Germinating seeds generate carbon dioxide by the process of .

1. expiration
2. respiration
3. transpiration

Q. Oxygen in the presence of enough moisture causes ____ to start. This creates ____ for the germination process.

1. Respiration, energy
2. Photosynthesis, energy
3. development, growth
4. photosynthesis, growth

Q. In Kreb’s cycle ______.

1. ADP is converted to ATP
2. pyruvic acid is converted to CO₂ and H₂O
3. glucose is converted in CO₂
4. pyruvic acid is converted to ATP

Q. STRUCTURED/APPLICATION/SKILL TYPE
The following diagram refers to an apparatus which is used to demonstrate a physiological process :
(a) What is the purpose of keeping potassium hydroxide solution in the test tubes X and Y?
(b) Why has the coloured water risen in tube 1?
(c) What is the purpose of keeping boiled peas soaked in a disinfectant in test tube Y?
(d) Name the biological process which causes the above rise.
(e) Define the biological process shown in the experiment.

Q. is suspended in each flask for absorbing carbon dioxide released from the seeds.

1. Soda lime
2. Calcium carbonate
3. Baking soda

Q. During the process of respiration in plants which of the following compounds are formed?

1. $C{O}_2+H_{2}O$
2. $C{O}_2+6H_{2}O+energy$
3. $6C{O}_2+6H_{2}O+energy$
4. $6C{O}_2+H_{2}O+energy$

Q. In the experiment to show that carbon dioxide is produced during respiration, set up is covered with black cloth so that CO₂ produced is not utilised for the process of photosynthesis.

1. False
2. True

Q. Choose the correct answer from the alternatives given.
The ripening of fruits can be accelerated by:

1. artificially adding ethylene gas to the atmosphere surrounding them
2. warming the surroundings artificially
3. keeping the fruits in a refrigerator
4. reducing water supply to the plant when the fruits are maturing

Q.

In the arrangement, flask (A) contains germinating bean seeds and flask (B) has dead boiled seeds with some antiseptic. Wet cotton provides water to both samples. A small tube containing soda lime is suspended in each flask for absorbing carbon dioxide.

What will happen when a burning paper is introduced into each flask after removing their corks?

1. The flame will put off in flask A, it will glow for a short while in flask B.

2. The flame will put off in flask B, it will glow for a short while in flask A.

3. The flame will put off in flasks A and B.

4. The flame will glow for a short while in flasks A and B.

Q.

Why is antiseptic added to the flask containing boiled seeds?

1. To prevent the seeds from germinating.

2. To prevent bacterial growth on dead seeds.

3. To absorb additional carbon dioxide.

4. To help lime water to turn milky.

Q.

An experimental setup showed that carbon dioxide is produced by a seed on germination. This carbon dioxide turned the limewater milky. Which process in germinating seeds is responsible for carbon dioxide generation.

1. Transpiration

2. Expiration

3. Photosynthesis

4. Respiration

Q.

During lactic acid fermentation _______.

1. $O_2$ is not used, $C{O}_2$ is liberated

2. $O_2$ is used, $C{O}_2$ is liberated

3. Neither $O_2$ is used, nor $C{O}_2$ is liberated

4. $O_2$ is used, $C{O}_2$ is not liberated

Q. What happens to the $C{O}_2$ given out by germinating seeds while performing the experiment?

1. It is absorbed by KOH.
2. It is absorbed by mercury
3. It is absorbed by Ca(OH)${}_2$
4. Both A and B