Question

what is the major difference between mesophyll chloroplast and bundle sheath chloroplast?​

Answer 1

Answer:

❤️❤️Mesophyll chloroplast

1. Large well developed numerous grana are present.

2. The enzyme Ribulose bi phosphate carboxylase (RuBP carboxylase) is absent. Therefore no CO2 fixation or C3 cycle occurs. In C3 plants, RuBP carboxylase is abundantly present in mesophyll chloroplast where CO2 fixation occurs

3. The activity of photosystem II is high making plenty of ATP, NADPH2 and O2

4. Starch grains are absent in mesophyll cells

5. The key enzymes of starch synthesis are absent in mesophyll cells.

Mesophyll Chloroplast and Bundle Sheath Chloroplast - Kranz anatomy

Bundle sheath chloroplast

1. Grana few or absent, if present very small and poorly developed.

2.High concentration of RuBP carboxylase. Therefore CO2 fixation or C3 cycle occurs.

3. Low activity of photosystem II , hence few ATP, NADPH2 and O2 generated

4. Abundant large starch grains are present in bundle sheath chloroplast

5. The key enzymes of starch synthesis (ADP-glucose pyrophosphorylase, starch synthase, and branching enzyme) are located primarily in the bundle sheath cells❤️❤️

Explanation:

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Answer 2

❤️❤️Mesophyll chloroplast

1. Large well developed numerous grana are present.

2. The enzyme Ribulose bi phosphate carboxylase (RuBP carboxylase) is absent. Therefore no CO2 fixation or C3 cycle occurs. In C3 plants, RuBP carboxylase is abundantly present in mesophyll chloroplast where CO2 fixation occurs

3. The activity of photosystem II is high making plenty of ATP, NADPH2 and O2

4. Starch grains are absent in mesophyll cells

5. The key enzymes of starch synthesis are absent in mesophyll cells.

Mesophyll Chloroplast and Bundle Sheath Chloroplast - Kranz anatomy

Bundle sheath chloroplast

1. Grana few or absent, if present very small and poorly developed.

2.High concentration of RuBP carboxylase. Therefore CO2 fixation or C3 cycle occurs.

3. Low activity of photosystem II , hence few ATP, NADPH2 and O2 generated

4. Abundant large starch grains are present in bundle sheath chloroplast

5. The key enzymes of starch synthesis (ADP-glucose pyrophosphorylase, starch synthase, and branching enzyme) are located primarily in the bundle sheath cells❤️❤️

Explanation:

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