Question

Give the answers

1) In order to carry out photosynthesis, what are the substances that a plant must take in ? Also
mention their sources

2) What is the role of chlorophyll in photosynthesis ?

3) Do plants need oxygen ? If so, what is its source ?​

Answer 1

Answer:

1. To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight. for photosynthesis. Carbon dioxide enters through tiny holes in a plant's leaves, flowers, branches, stems, and roots. Plants also require water to make their food.
2. Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar.
3. Oxygen, for plants, is essential because it makes the process of respiration more efficient (known as aerobic respiration). Plant cells are respiring constantly. When leaves are illuminated, plants generate their own oxygen. ... Roots, seeds, and other parts of plants that don't photosynthesize also need to consume oxygen

Answer 2

Answer:

1.. Plants create their own energy food, called glucose, through a process called photosynthesis. To carry out photosynthesis plants need four things: chloroplasts, light, water and carbon dioxide. Everything else the plant makes itself. The only things gardeners need to provide for the plant are light and water.

2..Chlorophyll is the green coloured pigment mainly arranged in and around pigment protein complexes called photosystems which are embedded in the thylakoid membranes of chloroplasts and serve as a light trapper and absorb light that helps in the photolysis of water that provides electrons and protons.

So the correct option is 'Absorption of light and photochemical decomposition of water'.

3... Oxygen, for plants, is essential because it makes the process of respiration more efficient (known as aerobic respiration). Plant cells are respiring constantly. When leaves are illuminated, plants generate their own oxygen. ... Roots, seeds, and other parts of plants that don't photosynthesize