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प्रश्न
Describe the process of nutrition in Amoeba. Draw labelled diagrams to show the various steps in the nutrition in Amoeba.
उत्तर
Following are the steps involved in the nutrition in Amoeba:
(i) Ingestion: Amoeba ingests food along with a little amount of the surrounding water. It does this using its pseudopodia and forms a food vacuole.
(ii) Digestion: The food in the food vacuole is digested by the digestive enzymes that enter from the cytoplasm.
iii) Absorption: The digested food is directly absorbed in the cytoplasm of the Amoeba cell by diffusion.
(iv) Assimilation: Some part of the digested food is used for acquiring energy for various life processes. This is done through respiration.
(v) Egestion: The undigested food is thrown out of the body through the cell membrane.
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संबंधित प्रश्न
Amarbel is an example of ______.
Define saprophyte. Name two saprophytes.
Define parasite. name two parasites.
Why is nutrition necessary for an organism?
One of the following organisms has a saprophytic mode of nutrition. This organism is:
(a) mushroom
(b) malarial parasite
(c) leech
(d) lice
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
Which of the following is an incorrect statement?
(a) energy is essential for life processes
(b) organisms grow with time
(c) movement of molecules does not take place among cells
(d) organisms must repair and maintain their body
How does growing embryo get nutrition from the mother's blood?
Can you give me a name?
Solve each of the following riddles by writing the name of the organism and its mode of nutrition. One riddle is solved to help you.
I live in water; people keep me in an aquarium and feed me. ______, ______
Visit a green house if there is one near your place. Observe how they grow plants. Find out how they regulate the amount of light, water and carbon dioxide to grow the plants.
