Question

Что такое фотосинтез? Где в растениях образуется органические вещества ? Какие условия необходимы для образования крахмала в листях ? Какое значение имеет процесс фотосинтеза в природе ? ​

Answer 1

Фотосинтез -преобразование органических веществ из неогранических(в основном из диоксида углерода четырехвалентого «углекислого газа» и воды) в листьях,стеблях(в тех клетках где есть хлорофилл-пигмент хлоропластов) в клетках ассимиляционной ткани . фотосинтез бывает двух видов : темновая и световая фаза.
основная заслуга фотосинтеза так это то что она обогащает биосферу и выделяет кислород в атмосферу (в этом заключается ее космическая роль )

Answer 2

What is photosynthesis?

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of glucose (a type of sugar). It is a vital process for the survival of plants and the production of oxygen in the atmosphere. During photosynthesis, plants use carbon dioxide, water, and sunlight to produce glucose and oxygen.

Where are organic substances formed in plants?

Organic substances, including glucose and other carbohydrates, are primarily formed in the leaves of plants through the process of photosynthesis. The leaves contain specialized cells called chloroplasts, which contain the pigment chlorophyll. Chlorophyll absorbs light energy and initiates the process of photosynthesis.

What conditions are necessary for starch formation in leaves?

Starch is a complex carbohydrate that is formed as a storage form of glucose in plants. It is primarily synthesized in the chloroplasts of plant cells, particularly in the leaves. Several conditions are necessary for starch formation in leaves:

1. Light: Photosynthesis requires light energy to drive the process. Adequate light intensity is necessary for the synthesis of glucose, which is then converted into starch. 2. Carbon dioxide: Plants require carbon dioxide as a raw material for photosynthesis. Sufficient levels of carbon dioxide are necessary for the production of glucose and subsequent starch formation. 3. Water: Water is essential for photosynthesis as it provides the hydrogen atoms needed to combine with carbon dioxide to form glucose. Sufficient water availability is crucial for starch formation in leaves. 4. Temperature: Photosynthesis is temperature-dependent, with an optimal range for most plants. Higher temperatures can increase the rate of photosynthesis, but excessively high temperatures can damage the enzymes involved in the process.

What is the significance of photosynthesis in nature?

Photosynthesis plays a crucial role in the natural world for several reasons:

1. Oxygen production: Photosynthesis is responsible for producing oxygen as a byproduct. This oxygen is released into the atmosphere and is essential for the survival of many organisms, including humans. 2. Carbon dioxide absorption: Photosynthesis helps to regulate the levels of carbon dioxide in the atmosphere. Plants absorb carbon dioxide during photosynthesis, reducing its concentration and mitigating the greenhouse effect. 3. Food production: Photosynthesis is the primary process by which plants produce their own food. It is the foundation of the food chain, as plants serve as a source of energy and nutrients for other organisms. 4. Ecosystem stability: Photosynthesis is essential for maintaining the balance of ecosystems. It provides energy for the growth and development of plants, which in turn support diverse habitats and ecosystems.

Overall, photosynthesis is a fundamental process that sustains life on Earth by producing oxygen, regulating carbon dioxide levels, and providing energy and food for organisms.