Question

Distinguish between c3 and c4 pathway

Answer 1

Answer:

In C3 cycle, the carbon dioxide fixation takes place only at one place. In C4 cycle, the carbon dioxide fixation takes places twice (first in mesophyll cells, second in bundle sheath cells). Only a single type of chloroplasts is involved in C3 cycle. All chloroplasts are granal.

@GameChanger

Answer 2

C3 Pathway

1. Photosynthesis occurs in the mesophyll cells
2. Kranz Anatomy is absent.
3. RuBP is the primary CO2 acceptor.
4. 3-PGA , a 3C compound is the first stable product.
5. Chloroplasts are of one type.
6. Photorespiratory loss is high.
7. High CO2 compensation point.
8. Optimim temperature is 25°C.
9. Photosynthetically less efficient and low productivity.

C4 Pathway

1. Photosynthesis occurs in the mesophyll and bundle sheath cells
2. Kranz anatomy is present.
3. PEP is the primary CO2 acceptor.
4. OAA , a 4 C compound is the first stable product.
5. Chloroplasts are of two types.
6. Photorespiration is absent or negligible.
7. Low CO2 compensation point.
8. Optimum temperature is 35°C - 45°C .
9. Photsynthetically more efficient and high productivity .

$\\ \\ \\ \\ \color{aqua} \tt{Hope } \: \: \color{red}{ this} \: \: \color{lime} {helps }\: \: \color{hotpink}{you }$