..... plants like corn and sugar cane close their stomata during hot days and have the Calvin cycle occurring in special cells around the leaf veins. These special cells are called bundle-sheath cells.

CAM PLANTS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

____ plants like corn and sugar cane close their stomata during hot days and have the Calvin cycle occurring in special cells around the leaf veins. These special cells are called bundle-sheath cells.

A	C3
B	C4
C	CAM

Explanation:

Detailed explanation-1: -C4 plants-including maize, sugarcane, and sorghum-avoid photorespiration by using another enzyme called PEP during the first step of carbon fixation. This step takes place in the mesophyll cells that are located close to the stomata where carbon dioxide and oxygen enter the plant.

Detailed explanation-2: -In the C3 plants, the first compound form is of 3 carbon (PGA) while in C4 plants the first compound is of 4 carbon (OAA). The Calvin cycle takes place in the mesophyll cells. The Calvin cycle takes place in the bundle sheath cells.

Detailed explanation-3: -C4 plants have a distinctive leaf anatomy (Kranz anatomy), with chlorophyll-containing mesophyll and bundle-sheath cells, which form a gas-tight cylinder surrounding the vascular bundle.

Detailed explanation-4: -CAM plants temporally separate carbon fixation and the Calvin cycle. Carbon dioxide diffuses into leaves during the night (when stomata are open) and is fixed into oxaloacetate by PEP carboxylase, which attaches the carbon dioxide to the three-carbon molecule PEP.

There is 1 question to complete.

AP BIOLOGY

PHOTOSYNTHESIS

CAM PLANTS