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F. Answer the following questions in brief.
1 What is nutrition?
2 Differentiate between autotrophs and heterotrophs.
3. What are the raw materials required for photosynthesis, and from where are they
obtained?
Why should we destarch a leaf before conducting an experiment to show that light
is necessary for photosynthesis?
5. How are partial parasitic plants different from other parasitic plants?
6. What are saprophytes? Give an example.
7. Cuscuta plants cannot perform photosynthesis. How do they obtain their nutrition?
Deep in the ocean, sunlight can hardly reach, yet plants such as brown and red
algae are found here. How do you think they are able to synthesise their food?
( 9.
9. Can plants use an artificial source of light (for example, tube light) for preparing
food?
Answers
Answer:1.)the food that you eat and the way that it affects your health
2.)Autotrophs are organisms that prepare their own food through the process of photosynthesis, whereas heterotrophs are organisms that cannot prepare their own food and depend upon autotrophs for nutrition.”
6.)Most dead organic matter is eventually broken down and used by bacteria and fungi. Slime moulds are also saprophytes, as well as consuming bacteria. Examples of saprophytes are cheese mold, and yeast.
7.)Cuscuta is a parasitic plant. It has no chlorophyll and cannot make its own food by photosynthesis. Instead, it grows on other plants, using their nutrients for its growth and weakening the host plant. ... Once they are firmly attached to a host, the cuscuta root withers away.
Explanation: