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प्रश्न
Why do organisms need to take food?
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उत्तर
Food is needed by all organisms for many purposes:
- The main function of food is to help in growth.
- Food provides energy for movements such as running, walking or raising our arms.
- Food is also needed for replacement and repairing damaged parts of the body.
- Food gives us resistance to fight against diseases and protects us from infections.
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संबंधित प्रश्न
The plant which traps and feeds on insects is ______.
Define saprophytic nutrition. Give one example.
Define nutrition.
The process of obtaining food by Amoeba is known as:
(a) dialysis
(b) cytokinesis
(c) phagocytosis
(d) amoebiasis
Two of the following organisms have a holozoic mode of nutrition. These organisms are:
(a) Paramecium and Plasmodium
(b) Plasmodium and Parakeet
(c) Parakeet and Paramecium
(d) Paramecium and Parasite
In which of the following groups of organisms the food material is broken down outside the body and then absorbed?
The organisms A, B and C can obtain their food in three different ways. Organism A derives its food from the body of another living organism which is called its D, without killing it. The organism B takes in the solid food by the process of ingestion, digests a part of this food and throws out undigested food in the process called E. The organism C obtains its food from dead and decaying plants.
(a) What is the mode of nutrition of (i) organism A (ii) organism B, and (iii) organism C?
(b) What is the organism like D called?
(c) Name the process E.
(d) Give one example each of organisms like (i) A (ii) B, and (iii) C.
(e) What is the general name of three modes of nutrition exhibited by organisms A, B and C?
How does growing embryo get nutrition from the mother's blood?
Match the organisms given in Column I with their mode of nutrition given in Column II.
| Column 1 | Column II | ||
| (a) | Mango tree | (i) | Insectivorous plant |
| (b) | Mushroom | (ii) | Heterotroph |
| (c) | Pitcher plant | (iii) | Autotroph |
| (d) | Cuscuta | (iv) | Saprophyte |
| (e) | Elephant | (v) | Parasitic |
Name the type of nutrition exhibited by Amoeba. Explain how food is taken in and digested by this organism.
