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In what organelle does photosynthesis occur

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Isabella Wilson

Published Feb 18, 2026

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

In what organelle does photosynthesis occur? - Google Search

Photosynthesis takes place inside the chloroplasts that sit in the mesophyll of the leaves. The thylakoids sit inside the chloroplast and they contain chlorophyll which absorbs the different colours of the light spectrum to create energy (Source: Biology: LibreTexts).

Which of these occur in photosynthesis?

During true photosynthesis, the carbon dioxide is reduced and water is oxidized. The carbon dioxide is reduced to glucose and the water is oxidized to release oxygen in the presence of sunlight to synthesize nutrients such as carbohydrates in the form of glucose and release oxygen.

In what cell organelle does photosynthesis occur color that organelle green?

Photosynthesis occurs in the chloroplasts of the plant, which have chlorophyll and can capture light for the plant to use that energy and start the chemical reaction. Inside the chloroplasts are things called thylakoid membranes, which drive the light-dependent reactions of photosynthesis.

Which tissue does photosynthesis occur?

The major tissues are mesophyll, veins, and epidermis. Mesophyll makes up most of the leaf’s interior. This is where photosynthesis occurs.

Where are photosynthetic pigments located in plant cell?

An organelle within the plant cell in which the photosynthetic reactions are compartmentalized. The thylakoid membranes within the chloroplast are the site of the photosynthetic pigments and electron transfer components used to make energy from photosynthesis.

What happens in the chloroplast during photosynthesis?

Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant. Chloroplasts capture light energy from the sun to produce the free energy stored in ATP and NADPH through a process called photosynthesis.

Which reaction occurs during photosynthesis quizlet?

When plants undergo photosynthesis, a reaction produces sugar, oxygen, and water. During respiration, stores energy from the products of photosynthesis is converted to usable energy.

Is chlorophyll involved in photosynthesis?

Green plants have the ability to make their own food. They do this through a process called photosynthesis, which uses a green pigment called chlorophyll. … Chlorophyll is located in a plant’s chloroplasts, which are tiny structures in a plant’s cells. This is where photosynthesis takes place.

How is o2 released during photosynthesis?

The oxygen released during photosynthesis comes from the splitting of water during the light-dependent reaction. … Light ”excites” electrons in pigment molecules, and light provides the energy to split water molecules, providing more electrons as well as hydrogen ions.

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Which organelle is involved in photosynthesis list and describe the parts of this organelle?

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

Does photosynthesis occur in upper epidermis?

The parts of a typical leaf include the upper and lower epidermis, the mesophyll, the vascular bundle(s) (veins), and the stomata. The upper and lower epidermal cells do not have chloroplasts, thus photosynthesis does not occur there.

Does photosynthesis occur in ground tissue?

While epidermal tissue mediates most of the interactions between a plant and its environment, ground tissue conducts the basic functions of photosynthesis, food storage, and support.

What happens in the Grana during photosynthesis?

Photosynthesis happens in two steps. In the first step, the light reaction, chlorophyll in the grana absorbs light. … The second step, the dark reaction, occurs in the stroma. The energy stored in NADPH and ATP powers a reaction that uses carbon dioxide and water to produce the sugar glucose.

In which organelle in plants do photosystems reside?

(b) Structures internal to chloroplasts, thylakoids have Photosystems I and II and ATP synthase embedded in their outer membranes.

Which molecule is produced during the light reactions of photosynthesis?

The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH.

What creates photosynthesis?

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

What is the source of electron in photosynthesis?

In (a) photosystem II, the electron comes from the splitting of water, which releases oxygen as a waste product. In (b) photosystem I, the electron comes from the chloroplast electron transport chain discussed below.

Which part of chlorophyll and thus plays a role in photosynthesis?

In plants, chlorophyll surrounds photosystems in the thylakoid membrane of organelles called chloroplasts, which are concentrated in the leaves of plants. Chlorophyll absorbs light and uses resonance energy transfer to energize reaction centers in photosystem I and photosystem II.

Which organelle absorbs light and performs photosynthesis?

In plants and algae, which developed much later, photosynthesis occurs in a specialized intracellular organelle—the chloroplast. Chloroplasts perform photosynthesis during the daylight hours.

Which best describes what occurs during photosynthesis?

photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

Which statement best explains what happens during photosynthesis?

Which statement BEST explains what happens during photosynthesis? Solar energy is utilized to convert inorganic carbon, in the form of carbon dioxide, into organic carbon compounds, such as glucose. This is part of the carbon cycle on Earth; a cycle which demonstrates the law of conservation of matter.

What do electrons do in photosynthesis?

The electron transfers of the light reactions provide the energy for the synthesis of two compounds vital to the dark reactions: NADPH and ATP. The previous section explained how noncyclic electron flow results in the reduction of NADP+ to NADPH.

What gas is released in photosynthesis?

The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas.

Where is oxygen gas produced during photosynthesis?

All photosynthetic eukaryotic cells contain chloroplasts that use the radiant energy of sunlight to convert carbon dioxide and water into carbohydrates. As a byproduct of photosynthesis, oxygen gas is also released into the atmosphere through tiny openings in the leaves called stomata.

What three organelles are involved in photosynthesis?

Chloroplasts and mitochondria are the organelles involved in photosynthesis and cell respiration respectively.

Which pigment is responsible for photosynthesis?

Chlorophylla-a is the primary pigment for photosynthesis in plants, but the range of light absorption is extended by chlorophyll-b, beta-carotene and other accessory pigments.

Is chloroplast an organelle?

Chloroplasts are plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process. … Chloroplasts are plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process.

Does photosynthesis occur in leaves or 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). Most of the stomata are located on the underside of the leaf to avoid excessive water loss.

What part of the leaf does most photosynthesis occur?

1: Structure of a leaf (cross-section): Photosynthesis takes place in the mesophyll. The palisade layer contains most of the chloroplast and principal region in which photosynthesis is carried out.

Does photosynthesis occur in vascular tissue?

Vascular tissue transports water, minerals, and sugars to different parts of the plant. Ground tissue serves as a site for photosynthesis, provides a supporting matrix for the vascular tissue, and helps to store water and sugars. … It is made of two specialized conducting tissues: xylem and phloem.