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Observe the diagram and answer the following:
(a) Which group of plants exhibit these two types of cells?
(b) What is the first product of $\mathrm{C}_4$ cycle?
(c) Which enzyme is there in bundle sheath cells and mesophyll cells?
(a) Which group of plants exhibit these two types of cells?
(b) What is the first product of $\mathrm{C}_4$ cycle?
(c) Which enzyme is there in bundle sheath cells and mesophyll cells?
Solution:
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(a) Monocot plants that belongs to Graminae/Poaceae family, e.g., sugarcane, maize etc., possess these two types of cells, i.e., bundle sheath and mesophyll cell (in kranz anatomy).
(b) First product of $\mathrm{C}_4$ cycle is 4-carbon compound oxaloacetic acid.
(c) Mesophyll cells consists PEP carboxylase enzyme to fix atmospheric $\mathrm{CO}_2$ to form 4-carbon compound oxalo acetic acid, whereas bundle sheath cells consists $\mathrm{RuBP}$ carboxylase that fixes $\mathrm{CO}_2$ to form 3-carbon compound 3 PGA (3 phosphoglyceric acid).
(b) First product of $\mathrm{C}_4$ cycle is 4-carbon compound oxaloacetic acid.
(c) Mesophyll cells consists PEP carboxylase enzyme to fix atmospheric $\mathrm{CO}_2$ to form 4-carbon compound oxalo acetic acid, whereas bundle sheath cells consists $\mathrm{RuBP}$ carboxylase that fixes $\mathrm{CO}_2$ to form 3-carbon compound 3 PGA (3 phosphoglyceric acid).
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