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Photosynthesis

This category is for questions about the chemical process in which autotrophic organisms use sunlight, carbon dioxide and water to make glucose, water and oxygen. This process is vital to life and is of great importance in biology.

6,415 Questions

What are the similarities and differences between homeostasis and photosynthesis?

Similarities: Both homeostasis and photosynthesis are essential processes for living organisms to maintain balance and sustain life. They both involve regulated mechanisms to ensure optimal conditions for the organism's survival.

Differences: Homeostasis is the process by which organisms maintain internal stability in response to external changes, while photosynthesis is the process by which plants and some other organisms convert sunlight into energy. Homeostasis involves various physiological processes, while photosynthesis is a specific biochemical process that occurs in the chloroplasts of plant cells.

How does water get to the leaves for photosynthesis to occur?

Water is transported upwards from the roots by a process called osmosis. This occurs in a layer of tissue called xylem consisting of elongated cells joined end to end. Xylem extends from the root all the way to the veins of a leaf. Downward transport of photosynthates and other substances such as hormones is achieved by a layer of tissue generally outside the xylem called the phloem. The order myrtales is an exception and has two layers of phloem both inside and outside the xylem.

Why is ATP generated in photosynthesis rather than using light energy to directly synthesise carbohydrates?

ATP is generated in photosynthesis as an intermediate energy carrier that can be used to drive the synthesis of carbohydrates and other molecules. This process allows for efficient use of energy and regulation of metabolic pathways. Direct synthesis of carbohydrates from light energy would require mechanisms to capture and store energy with high efficiency, which is more complex compared to using ATP as an energy carrier.

What was necessary for the transport of raw materials and goods as well as for protection or trade and markets?

The development of transportation infrastructure such as roads, bridges, and ports was essential for the transport of raw materials and goods. Additionally, the establishment of protective measures like guards and fortifications was crucial for ensuring safety during trade. Access to established markets and trading routes also played a significant role in facilitating the exchange of goods.

Why photosynthesis cannot take place in a boiled sea water?

Boiling sea water would cause the salt to become more concentrated as the water evaporates, leading to a hypertonic environment that would be harmful to the plant cells involved in photosynthesis. The increased salinity would disrupt the balance of water and mineral uptake, affecting the plant's ability to photosynthesize effectively.

What does plants synthesis during photosynthesis?

co2

They synthesize glucose molecules.Oxygen is produced as a by product

During photosynthesis plants generate sugars which contain chemical potential energy but plants need external energy to perform photosynthesis. Where does this external energy come from?

The external energy needed for photosynthesis comes from sunlight. Plants use sunlight to convert carbon dioxide and water into glucose and oxygen through the process of photosynthesis. This stored chemical energy in the form of sugars is used by the plant for growth, reproduction, and metabolism.

Why do plants in a field only photosynisise at night?

Plants do not photosynthesize only at night; in fact, photosynthesis primarily occurs during the day when there is sunlight available. However, some plants like CAM plants have adapted to perform a type of photosynthesis known as Crassulacean Acid Metabolism, where they open their stomata at night to reduce water loss and take in carbon dioxide, which is then stored and used for photosynthesis during the day. This adaptation allows them to thrive in arid conditions.

Do monerans have chlorophyll?

Monerans, also known as archaea and bacteria, do not contain chlorophyll. Chlorophyll is a pigment found in plants, algae, and cyanobacteria that is essential for photosynthesis. Monerans obtain energy through various other metabolic processes, such as chemosynthesis or fermentation.

What is exhaled by animals and absorbed by plants?

Animals, like humans, exhale carbon dioxide. Carbon dioxide is taken in by plants, and through the process of photosynthesis produce oxygen.

Why is Transpiration essential to photosynthesis?

Transpiration is essential to photosynthesis because it helps maintain the water flow through the plant, allowing nutrients and water to be transported to the leaves where photosynthesis occurs. It also cools the plant and creates a negative pressure that helps draw water and nutrients from the soil. Without transpiration, photosynthesis would be limited due to a lack of water and nutrients reaching the leaves.

Is upper epidermis specialized for photosynthesis?

No, the upper epidermis of a leaf is not specialized for photosynthesis. Its main function is to protect the underlying mesophyll tissue and help reduce water loss through the leaf surface. Photosynthesis primarily occurs in the mesophyll cells located below the upper epidermis.

Are reactions of photosynthesis catabolic or anabolic?

It is Anabolic, Catabolic would be an organism consuming another photosynthetic organism. Such as a cow that eats photosynthetic grass.

In short ,

Anabolism is a constructive process (photosynthesis, food is made)

Catabolism is a destructive process (respiration, break down of glucose)

Where do raw materials come from in plants?

The raw materials plants need to build sugar molecules are carbon dioxide, water, and light. The carbon dioxide came from the air, the water came through the xylem tubes from the roots, and the light came from the sunlight. Hope I helped a little!! =D

Are the products of photosynthesis the raw materials of cellular respiration?

Photosynthesis:

carbon dioxide + water (+ sunlight) -------> oxygen + glucose

Aerboic Respiration:

oxygen + glucose ------> carbon dioxide + water (+ energy)

So yes the products of photosynthesis are the raw materials of AEROBIC respiration.

Where does the oxygen gas come from?

Oxygen gas comes from plants and other photosynthetic organisms as a byproduct of photosynthesis. During this process, these organisms take in carbon dioxide and water and convert them into glucose and oxygen using sunlight as energy. Humans and animals then breathe in this oxygen and use it for cellular respiration to produce energy.

Are plants really green?

Yes, plants appear green because they contain a pigment called chlorophyll that absorbs red and blue light for photosynthesis, reflecting green light. This is why we perceive most plants as green.

What process is similar to photosynthesis?

Chemical reactions like chemosynthesis, where organisms convert inorganic compounds into energy using chemical reactions instead of light, are similar to photosynthesis. Both processes involve the conversion of energy into a usable form for the organism's growth and survival.

Why is the process of photosynthesis called an air purifying process?

Photosynthesis is called an air purifying process because plants take in carbon dioxide from the air during photosynthesis and release oxygen as a byproduct. This helps to reduce the amount of carbon dioxide in the atmosphere and increase the level of oxygen, which benefits both plants and animals by improving air quality.

Is photosynthesis anabolic reaction?

yes, obviously because the word ''photosynthesis'' has the word ''synthesis'' in it. Photosynthesis is a reaction of a plant when a ''seed'' gets enough sunlight and water to produce growth.and that is the term of photosynthesis :) the equation to photosynthesis is carbon dioxide+water---->sugar+oxygen and where the arrow is (--->) should be a word on top of that, and that word obviously is "light" :) i hope i helped and good luck with that info if it is needed fot whatever your doing!! :) xx

Where is carbon taken in by plants during photosynthesis stored?

Carbon dioxide is taken in by plants, and converted to glucose during photosynthesis. Most plants convert the glucose to starch for storage. It may be retained in the leaves, and sometimes it's stored in a seed, or in a special organ for vegetative reproduction such as a potato tuber.

What happens to plant cells in the second stage of photosynthesis?

In the second stage of photosynthesis, known as the Calvin cycle, plant cells use energy from ATP and NADPH produced in the first stage to convert carbon dioxide into glucose. This process involves a series of reactions that ultimately result in the formation of glucose, which the plant can use for energy or store for later use.