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प्रश्न
Write definition.
Nutrition.
उत्तर
- The process by which organisms take up nutrients and utilise these nutrients for various biological activities is called nutrition.
- Nutrition can be categorised as autotrophic or heterotrophic.
- Autotrophic nutrition refers to the process by which organisms synthesise their own food from inorganic raw materials, for example, green plants and some bacteria.
- In heterotrophic nutrition, the organisms are unable to use light energy for the synthesis of food and are dependent on other organisms to fulfil their energy requirements.
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संबंधित प्रश्न
Name the life process of an organism that helps in the growth of its population.
Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans
What processes would you consider essential for maintaining life?
Which is the basic requirement of living organisms for obtaining energy?
Which of the following type of energy is used by living organisms to perform vital life processes? Kinetic energy, Chemical energy, Potential energy, Nuclear energy
Match the organisms given in column I with the processes given in column II:
| Column I | Column II | ||
| (i) | Leech | (a) | Holozoic nutrition |
| (ii) | Amoeba | (b) | Autotrophic nutrition |
| (iii) | Mushroom | (c) | Parasitic nutrition |
| (iv) | Green plant | (d) | Saprophytic nutrition |
Match the terms in column I with their uses in column II
| Column I | Column II |
| (i) Heart | (a) Pipes for transport in humans |
| (ii) Arteries and Veins | (b) Clotting of blood |
| (iii) Xylem vessels | (c) Pumping organ |
| (iv) RBC | (d) Water transport in plants |
| (v) Platelets | (e) Carrier of oxygen |
A person lives near a forest. Make a list of four items which he can get from the forest to meet his daily needs.
Name the green dot like structures in some cells observed by a student when a leaf peel was viewed under a microscope. What is this green colour due to?
Skin : Keratin : : Blood : ____________
Complete the following flowchart.
Fill in the blank and explain the statement.
Our muscle cells perform ______ type of respiration during exercise.
Write the definition.
Proteins
Write definition.
Glycolysis
Give scientific reason.
Kreb's cycle is also known as citric acid cycle.
Write the forms to which following food materials are converted after digestion.
1.Milk
2. Potato.
3. Oil.
4. Chapati
Complete the following chart and state which process of energy production it represents:
Explain the ‘inhalation’.
Soil fertility is determined by its ability to :
Find an odd one out.
What are the main energy sources of living organisms?
Explain the Steps of Glycolysis.
How do the guard cells regulate opening and closing of stomatal pores?
Why do fishes die when taken out of water?
Explain the following concept in short:
Balanced Diet
Explain the following concept in short:
Role of circulatory system in energy production
Give scientific reason.
Cell division is one of the important properties of cells and organisms.
