Leaves of green plants contain openings known as stomates, which are opened and closed by specialized cells allowing for gas exchange between the leaf and the outside environment. Which phrase best represents the net flow of gases involved in photosynthesis into and out of the leaf through these openings on a sunny day?

PHOTOSYNTHESIS

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

A	carbon dioxide moves in; oxygen moves out
B	carbon dioxide and oxygen move in; ozone moves out
C	oxygen moves in; nitrogen moves out
D	water and ozone move in; carbon dioxide moves out

Explanation:

Detailed explanation-1: -Leaves. The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.

Detailed explanation-2: -Plants ‘breathe’ too, but they do it through tiny openings in leaves called stomata (singular: stoma). Stomata open and close to allow the intake of carbon dioxide and the release of oxygen.

Detailed explanation-3: -In plants, the exchange of gases takes place through stomata. Each of the stomata is surrounded by two guard cells, and these cells contain chloroplasts. A respiratory opening is found under each stoma, and the process of opening and closing of stomata depends on the presence of sugar and starch in the guard cells.

Detailed explanation-4: -Stomata are responsible for allowing gas exchange between the inside of the leaf and the atmosphere. Stoma is the singular and stomata is the plural form.

There is 1 question to complete.

DENDROLOGY

TREE PHYSIOLOGY

PHOTOSYNTHESIS