Why are leaves called food factories of plant? • What is the source of energy for synthesis of food? • Why does photosynthesis occur only in green leaves? • Pitcher plant and Venus flytrap are green plants and synthesise their food, then, why do they kill insects?
Answers
Answer:
1. Because they make food for the plant.
2. Sun.
3. Because green leaves contain chlorophyll which is important for photosynthesis.
4. These plants grow in nitrogen deficient soil so to fulfill their nitrogen requirement they have to eat insects.
Explanation:
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Answer:
• Leaves are the specialized structures for food production and hence, called food factories of the plants. ... -The leaves get their green color from a photosynthetic pigment called chlorophyll. -Plant cells have chloroplasts, these contain chlorophyll and are responsible for photosynthesis.
• Food making process in plants is called as photosynthesis and synthesized food is stored as carbohydrates (glucose as well as starch). Plants are known as photoautotrophs or photosynthetic organisms which means that they are able to synthesize their food directly from carbon dioxide and water using energy from light.
• photosynthesis take place only in green plant because they are the only living things which use carbon dioxide , chlorophyll , sunlight for making their food. Photosynthesis can only take place in green plants , because they contain a special green pigment (substance) called chlorophyll on its surface.
• These plants (e.g. pitcher plant) are green and carry out photosynthesis to obtain a part of the food required by them. But they do not get the nitrogen from the soil in which they grow. So, insectivorous or carnivorous plants feed on insects to obtain the nitrogen needed for their growth.
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