CAM Pathway

Q.

Which of the following is mismatched?

1. Photosystem I - uses the P700 molecule in its photocentre

2. PGA - a 3-carbon compound

3. CAM plants - open their stomata during the day and close them at night to avoid photorespiration

4. antenna complex - contains hundreds of pigment molecules

Q.

Which one gives the most valid explanation for guard cell movements

1. Guard cell photosynthesis

2. Starch hydrolysis theory

3. Potassium influx and efflux

4. Transpiration

Q. Which of the following occurs in the CAM pathway during the night?

1. $C{O}_2$ is released which is used in the Calvin cycle
2. Malic acid is stored in the vacuole
3. Malic acid is converted to malate
4. Malate is converted to phosphoenolpyruvate

Q. Which of the following is a CAM plant?

1. Sorghum
2. Sugarcane
3. Cactus
4. Maize

Q. ________ is the first stable product produced during night time in CAM plants.

1. Oxaloacetate
2. Malate
3. 3-phosphoglycerate
4. Triose phosphate

Q.

In the following question, a statement of assertion is following by a statement of reason. Mark the correct choice as:
Assertion: CAM plants lack structural compartmentation of a leaf as found in $C_4$ plants.
Reason: Stomata of CAM plants are open during the day.

1. If both assertion and reason are true and reason is the correct explanation of assertion.

2. If both assertion and reason are true but reason is not the correct explantion are true but reason.

3. If assertion is true but reason is false.

4. If both assertion and reason are false

Q. The first stable product in CAM/C4 plants is

1. Starch
2. Oxaloacetic acid
3. Sugar
4. Malic acid.

Q.

Which of the following is NOT a character of plants having CAM (Crassulacean Acid Metabolism) cycle?

1. CAM plants are mostly succulents living in xerophytic conditions

2. CAM plants use PEP carboxylase during daytime and RUBISCO during the night

3. In CAM plants, stomata open during the night and close during daytime

4. CAM plants lack Kranz anatomy