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L7 : Nutrition in Amoeba & Paramecium - Life Processes, Science, Class 10 Video Lecture

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FAQs on L7 : Nutrition in Amoeba & Paramecium - Life Processes, Science, Class 10 Video Lecture

1. What is the role of nutrition in the life processes of Amoeba and Paramecium?
Ans. Nutrition plays a vital role in the life processes of Amoeba and Paramecium. Both organisms obtain their food through different mechanisms. Amoeba engulfs its food through a process called phagocytosis, while Paramecium uses cilia to sweep food particles into its oral groove. The nutrients obtained from the food are then utilized for growth, repair, and energy production in these organisms.
2. How does Amoeba obtain its nutrition?
Ans. Amoeba obtains its nutrition by engulfing its food through a process called phagocytosis. It extends its pseudopodia around the food particle, forming a food vacuole. The food vacuole then fuses with lysosomes, which contain digestive enzymes. These enzymes break down the food into smaller molecules, which are then absorbed and utilized by Amoeba for nutrition.
3. What is the mode of nutrition in Paramecium?
Ans. Paramecium obtains its nutrition through a process called holozoic nutrition. It uses its cilia to sweep food particles into its oral groove, where they are then ingested. The food particles are enclosed in a food vacuole, which fuses with lysosomes. Digestive enzymes in the lysosomes break down the food into simpler molecules, which are then absorbed and utilized by Paramecium for nutrition.
4. How do Amoeba and Paramecium utilize the nutrients obtained from their food?
Ans. Amoeba and Paramecium utilize the nutrients obtained from their food for various life processes. These include growth, repair, and energy production. The nutrients are broken down into simpler molecules, such as glucose, which are then used in cellular respiration to produce energy. The energy is utilized for the organisms' metabolic activities and to maintain their basic life processes.
5. What happens to the undigested food in Amoeba and Paramecium?
Ans. In Amoeba, undigested food is eliminated from the cell through a process called exocytosis. The undigested waste is expelled from the cell through a temporary opening called the anal pore. In Paramecium, undigested food is also eliminated through an anal pore, but it is expelled along with excess water in a structure called the contractile vacuole. The contractile vacuole helps in maintaining the osmotic balance of the organism.
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