Question

I need to know the answers to the columns of table 13.1, highlighting the difference between c3 and c4 plants. Thank you so much.

Answer 1

The above image clearly states The difference between C3 and C4 plants.


Regards,
Adithiya.

Answer 2

C3 plants:-

• The C3 plants uses C3 cycle or kelvin cycle of dark reaction of photosynthesis.
• This plant are named as C3 plants as the first stable product formed is three carbon compounds- phosphoglyceric acid.
• The efficiency of photosynthetic C3 plants is comparatively less due to high rate or phosphorespiration.
• C3 plants are grow in cold season.
• Kranz anatomy is absence in the leaves of C3 plants.
• In C3 plants, the carbon dioxide fixation takes place only in one place.
• The atmospheric carbon dioxide acceptor in C3 plants is RuBP.
• The complete steps of dark reaction takes place in mesophyll cells.
• Photorespiration rate is very high in C3 plants.
• Example of C3; wheat, rye, oats, rice, cotton, sunflower, chlorella.

C4 plants:-

• C4 plants uses one more dark reaction pathway called C4 cycle.
• The first stable product in C4 cycle is 4 carbon compounds- oxaloacetic acid.
• The efficiency of photosynthetic  is C4 plants is very high as photorespiration is absent.
• They are warm season plants commonly seen in dry areas.
• Kranz anatomy is present in the leaves of C4 plants.
• In C4 plants, the carbon dioxide fixation takes place twice, ones in mesophyll cells and second in bundle sheath cells.
• The atmospheric carbon dioxide acceptor in C4 plants is PEP.
• The first steps of C4 plants is takes place in mesophyll cells and the another steps are carried out in bundle sheath cells.
• Photorespiration is absent in C4 plants.
• Example of C4 plants are Maize, sugarcane, sorghum, amaranthus.