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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
Given below are the end products of different reactions involving glucose. Write the appropriate end product in front of the following:
(1) Anaerobic reaction =
(2) Reaction in human muscles =
(3) Aerobic respiration
(4) Reaction in plant cells =
(5) Reaction in liver =
Name the life process of an organism that helps in the growth of its population.
What criteria do we use to decide whether something is alive?
What are outside raw materials used for by an organism?
What processes would you consider essential for maintaining life?
Which is the basic requirement of living organisms for obtaining 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 those in column II :
| Column I | Column II | ||
| (i) | Trypsin | (a) | Liver |
| (ii) | Amylase | (b) | Gastric glands |
| (iii) | Bile | (c) | Pancreas |
| (iv) | Pepsin | (d) | Saliva |
A person lives near a forest. Make a list of four items which he can get from the forest to meet his daily needs.
Rewrite the food-chain given below with correct sequence.
Grasshopper– Snake– Paddyfield– Eagle– Frog
Fill in the blank and explain the statement.
Our muscle cells perform ______ type of respiration during exercise.
Write definition
Nutrients
Write the definition.
Proteins
Distinguish between Glycolysis and TCA cycle.
Give scientific reason.
Oxygen is necessary for complete oxidation of glucose.
Give scientific reason.
Kreb's cycle is also known as citric acid cycle.
Explain the glycolysis in detail.
Write the forms to which following food materials are converted after digestion.
1.Milk
2. Potato.
3. Oil.
4. Chapati
Answer in detail.
How all the life processes contribute to the growth and development of the body?
Answer in detail.
Explain the Kreb's cycle with reaction.
Explain the ‘inhalation’.
Soil fertility is determined by its ability to :
Why is there a difference in the rate of breathing between aquatic organisms and terrestrial organisms? Explain.
Name the organs that form the excretory system in human beings.
Find an odd one out.
Explain the Steps of Glycolysis.
Assertion: When air is passed through lime water, lime water turns milky.
Reason: Air contains 78% nitrogen and 21% oxygen.
Choose the forms in which most plants absorb nitrogen
- Proteins
- Nitrates and Nitrites
- Urea
- Atmospheric nitrogen
How do the guard cells regulate opening and closing of stomatal pores?
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.
Give one example of each of the classifications of vitamins.
