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प्रश्न
Which of the following is an incorrect statement?
पर्याय
Organisms grow with time
Organisms must repair and maintain their structure
Movement of molecules does not take place among cells
Energy is essential for life processes
उत्तर
Movement of molecules does not take place among cells
Explanation -
The movement of molecule is a vital process. Movement of molecules in cells take place in active and passive modes such as Diffusion, osmosis, facilitated diffusion etc.
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संबंधित प्रश्न
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
Given below is a square of letters in which are hidden different words related to respiration in organisms. These words may be present in any direction − upwards, downwards, or along the diagonals. Find the words for your respiratory system. Clues about those words are given below the square.
- The air tubes of insects
- Skeletal structures surrounding chest cavity
- Muscular floor of chest cavity
- Tiny pores on the surface of leaf
- Small openings on the sides of the body of an insect
- The respiratory organs of human beings
- The openings through which we inhale
- An anaerobic organism
- An organism with tracheal system
Name the process by which plant parts like roots, stems, and leaves get oxygen required for respiration.
What type of respiration takes place in human muscles during vigorous physical exercise? Give reason for your answer
Describe the process of respiration in Amoeba. State whether it is anaerobic respiration or aerobic respiration.
Describe the process of respiration in the following part of a plant:
Root
From where do the aquatic animals and terrestrial animals obtain oxygen for breathing and respiration?
Which of the following is correct for the process of anaerobic respiration?
| Carbon dioxide always produced | A lot of energy released | |
| (a) | No | Yes |
| (b) | No | No |
| (c) | Yes | No |
| (d) | Yes | Yes |
Tick the most appropriate answer.
The products of respiration are :
Differentiate between
External respiration and Internal respiration
Choose the odd one out in the following groups of four items each:
Trachea, Bronchus, Alveolus, Diaphragm
State one function of the following:
Intercostal muscles
List the organs of Human respiratory system.
Lack of oxygen in muscles often leads to cramps among cricketers. This results due to:
Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:
During respiration exchange of gases take place in
Breathing is a process that
- provides O2 to the body.
- breaks down food to release energy.
- helps the body to get rid of CO2.
- produces water in the cells.
Which of the following gives the correct combination of functions of breathing?
The exchange of gases in the leaves takes place with the help of __________.
Match the correct answers with the type of respiration and respiratory substances.
| Respiration | Types of Substrates |
| A. Floating respiration | I. Proteins |
| B. Cytoplasmic respiration | II. Glucose |
| C. Protoplasmic respiration | III. Carbohydrates and fats |
