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2021-05-14

Where does most photosynthesis take place in plants?

Where does most photosynthesis take place in plants?

chloroplasts

Where does the most photosynthesis occur in a leaf?

You should notice that the vast majority of chloroplasts are found in the cells of the mesophyll. Even more specifically, the palisade layer has the most chloroplasts, so the greatest amount of photosynthesis occurs in that leaf layer.

In which plant photosynthesis occurs in stem?

Cactus

Does photosynthesis occur in the stem?

Photosynthesis occurs mostly in the leaves of the plant; however, it can occur in the stems, but in a minimal proportion. It begins when CO2 enters the leaf through the stomata (openings in the leaves) (Figure 2).

Does Plant take oxygen at night?

Plants release oxygen during the day in the presence of natural light through the process of photosynthesis. While at night, the plants uptake oxygen and release carbon dioxide, which is called respiration.

Do plants use moonlight to grow?

The amount of moonlight at different times also influences the growth of plants. As the moonlight increases (new moon and second quarter), this stimulates leaf growth. After the full moon, the moonlight decreases, putting energy into the plant roots. At other times, these natural forces create a rest period for plants.

Why is photosynthesis impossible on the surface of the moon choose more than one answer?

Because the light intensity that we get reflected off the moon is an order of 100-1000 times too little to support photosynthesis in most terrestrial pot plants and plants we have in our garden.

Why is Photorespiration absent in C4 plants?

Photorespiration occurs due to the oxygenase activity of RuBisCO. When the concentration of O2 is high, RuBisCO binds to oxygen and carries out photorespiration. C4 plants have a mechanism of maintaining high CO2 concentration at the enzyme site, thus photorespiration does not occur.

What are the end products of light reaction?

Difference between Light and Dark Reaction

Light Reaction Dark Reaction
The end products are ATP and NADPH. Glucose is the end product. ATP and NADPH help in the formation of glucose.
The water molecules split into hydrogen and oxygen. Glucose is produced. Co2 is utilized in the dark reaction.

What are the end products of Photorespiration?

Photorespiration wastes energy and steals carbon Two molecules are produced: a three-carbon compound, 3-PGA, and a two-carbon compound, phosphoglycolate.

Does Photorespiration occur in CAM plants?

Photorespiration is a wasteful pathway that occurs when the Calvin cycle enzyme rubisco acts on oxygen rather than carbon dioxide. Crassulacean acid metabolism (CAM) plants minimize photorespiration and save water by separating these steps in time, between night and day.

Is pineapple a CAM plant?

Pineapple (Ananas comosus (L.) Merr.) is the most economically valuable crop possessing crassulacean acid metabolism (CAM), a photosynthetic carbon assimilation pathway with high water-use efficiency, and the second most important tropical fruit.

Why do CAM plants open stomata at night?

Many cacti and other succulent plants with CAM metabolism open their stomata at night and close them during the day. CO2 is fixed into malate during the night because air temperatures are much lower at night than those of the day. The basic role of stomata is to regulate transpiration and photosynthesis.

Do CAM plants have a lot of stomata?

CAM plants usually are found in dry climates like deserts, so they want to conserve as much of their water as possible. CAM plants do this by having relatively fewer stomata than C3 and C4 plants, as well as only opening their stomata during the night.

What is the difference between C3 C4 and CAM plants?

C3 and C4 indicates the number of carbon atoms in the sugar molecules produced by the photosynthesis. CAM is Crassulacean acid metabolism in which carbon dioxide CO2 is fixed at night. Generally, C3 plants are suited to cool, moist conditions, C4 to hot and dry, and CAM to arid conditions.

What is a CAM plant examples?

Examples of CAM Plants. Specific examples of CAM plants are the jade plant (Crassula argentea), Aeonium, Echeveria, Kalanchoe, and Sedum of the family Crassulaceae, pineapple (Ananas comosus), Spanish moss (Tillandsia usneoides), cacti, orchids, Agave, and wax plant (Hoya carnosa, family Apocynaceae).

Is Sugarcane a CAM plant?

C4 plants include corn, sugar cane, and many other tropical grasses. CAM (“crassulacean acid metabolism”) plants also initially attach CO 2 to PEP and form OAA. CAM plants are more common than C4 plants and include cacti and a wide variety of other succulent plants.

Is Onion a CAM plant?

(D) Pea. Hint: Crassulacean acid metabolism which is also called as the CAM photosynthesis, is a carbon fixation pathway that advances in certain plants in order to adapt in the arid conditions. Since the desert plants have very less water for the metabolism, the CAM pathway is used.

Is aloe vera a CAM plant?

Aloe vera is a CAM plant. CAM stands for Crassulacean Acid Metabolism. CAM plants first store carbon dioxide as an acid. After this, it is used in photosynthesis.