Advertisements
Advertisements
Question
Write definition.
Nutrition.
Solution
- 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.
APPEARS IN
RELATED QUESTIONS
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 =
Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans
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?
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 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.
Skin : Keratin : : Blood : ____________
Complete the following flowchart.
Fill in the blank and explain the statement.
Our muscle cells perform ______ type of respiration during exercise.
Distinguish between Glycolysis and TCA cycle.
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 :
Why is there a difference in the rate of breathing between aquatic organisms and terrestrial organisms? Explain.
Find an odd one out.
What are the main energy sources of living organisms?
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?
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.
