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Questions and Answers
What is the main function of chlorophyll in plants?
What is the main function of chlorophyll in plants?
- To release water vapor into the air
- To absorb carbon dioxide from the air
- To release oxygen into the air
- To capture sunlight for photosynthesis (correct)
What is the primary purpose of stomata in plants?
What is the primary purpose of stomata in plants?
- To facilitate gas exchange between the plant and the environment (correct)
- To release excess oxygen into the air
- To store starch produced by photosynthesis
- To absorb water from the soil
What happens to the excess sugar produced by plants during photosynthesis?
What happens to the excess sugar produced by plants during photosynthesis?
- It is used immediately for energy by the plant
- It is stored as starch in the plant's cells (correct)
- It is released into the air as carbon dioxide
- It is converted into oxygen and released into the air
Why do we see bubbles coming out from the underside of a leaf when it is submerged in warm water?
Why do we see bubbles coming out from the underside of a leaf when it is submerged in warm water?
What is the term for the process by which plants make their own food using sunlight?
What is the term for the process by which plants make their own food using sunlight?
What is the purpose of spines on a cactus?
What is the purpose of spines on a cactus?
What is the name of the process by which plants make food using light energy?
What is the name of the process by which plants make food using light energy?
What is the green pigment found in leaves and some parts of a plant that captures sunlight?
What is the green pigment found in leaves and some parts of a plant that captures sunlight?
What is the reason for the gain in mass as plants grow?
What is the reason for the gain in mass as plants grow?
What is the substance produced during photosynthesis that is stored in different parts of a plant?
What is the substance produced during photosynthesis that is stored in different parts of a plant?
What is the purpose of stomata in plants?
What is the purpose of stomata in plants?
What is the test used to determine if a leaf has made food?
What is the test used to determine if a leaf has made food?
Study Notes
Photosynthesis and Plant Structure
- Chlorophyll, a green pigment, is present in leaves and helps capture sunlight for photosynthesis.
- Leaves have tiny openings called stomata, usually found on the underside, which allow for gas exchange (carbon dioxide in, oxygen out).
Stomata and Gas Exchange
- Stomata are responsible for the entry and exit of gases, including carbon dioxide and oxygen.
- Carbon dioxide enters the plant through stomata for photosynthesis.
- Oxygen produced during photosynthesis is used by the plant for respiration and excess oxygen leaves through stomata.
Plant Storage
- Plants store excess sugar produced during photosynthesis as starch in different parts, such as roots, stems, fruits, and seeds.
- Examples of starch-storing plant parts include carrots, potatoes, unripe bananas, and rice.
Detecting Starch in Leaves
- Iodine solution can be used to test for the presence of starch in leaves.
- Iodine solution changes from brown to blue-black in the presence of starch.
Importance of Photosynthesis
- Photosynthesis is essential for plants to produce food and energy.
- The energy stored in plants and animals is derived from the Sun.
- Plants provide food and energy for animals, which feed on them directly or indirectly.
Key Points
- Photosynthesis is the process by which plants use carbon dioxide, water, and light to make food.
- Plants make food in the form of sugar during photosynthesis.
- Oxygen is also produced during photosynthesis.
- Biomass is matter made up of cells and tissues.
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Description
This quiz covers the process of photosynthesis, how plants capture sunlight and make food, and the role of stomata in carbon dioxide uptake.
