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प्रश्न
Name the body structure concerned with the given functional activity:
Prevents food from entering the trachea during swallowing.
उत्तर
Epiglottis
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संबंधित प्रश्न
How are oxygen and carbon dioxide transported in human beings?
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
Which part of roots is involved in the exchange of respiratory gases?
Name the process by which plant parts like roots, stems, and leaves get oxygen required for respiration.
Out of photosynthesis and respiration in plants, which process occurs:
(a) all the time?
(b) only at daytime?
State whether the following statement is true or false:
Energy can be produced in cells without oxygen.
Fill in the following blank with suitable word:
Gills are the breathing organs in ___________.
How are oxygen and carbon dioxide exchanged in our body during respiration?
Give the main points of difference between respiration in plants and respiration in animals.
Internal respiration may be defined as:
There are five animals P, Q, R, S and T. The animal P always lives in water and has gills for breathing. The animal Q can stay in water as well as on land and can breathe both, through moist skin and lungs. The animal R lives in soil and breathes only through its skin. The animal S lives on land and breathes through spiracles and tracheae. And animal T lives in water and breathes through its cell membrane.
(a) Which of the animals could be Amoeba?
(b) Which of the animals could be frog?
(c) Which animal could be fish?
(d) Which animal could be grasshopper?
(e) Which animal could be earthworm?
When a person breathes in the air, the air enters into his body through an organ A having two holes B in it. The air then passes through the pharynx and larynx and enters into tube C. The tube C divides into two smaller tubes D at its lower end. The two smaller tubes are attached to two respiratory organs E. Each smaller tube divides inside the organs E to form a large number of still smaller tubes called F. The smallest tubes F have air-sacs G at their ends in which gaseous exchange takes place in the body of the person. What are A, B, C, D, E, F, and G?
Veins and arteries carry blood. Which of these carry blood away from the heart?
Fill in the following blanks with suitable words:
The ___________ blood cells make antibodies whereas ___________ blood cells help in respiration.
With which human organ system (or human systems) is alveoli associated?
It has been found that people living in very high mountains have many more red corpuscles in their blood than people living in plains. Which one of the following best accounts for this phenomenon?
A student has set up "CO2 is released during respiration”. After about 1 hour he observes no change in the water level in the delivery tube. Write two possible resons for the failure of the experiment.
Match the items in Column A with those in Column B.
|
Column A |
Column B |
|
Cartilaginous |
Epiglottis |
|
Large surface area |
Diaphragm |
|
Breathing movements |
Bronchi |
|
Voice |
Alveoli |
|
Complemental air |
Larynx |
|
Swallowing |
Extra inhalation |
How is the respiratory passage kept free of dust particles?
Answer the following question.
How is O2 and CO2 transported in human beings?
The major fraction of CO2 released during cellular respiration is transported by the blood to the lung capillaries ______
term 'respiration' includes
______ refers to the physical process by which gaseous exchange takes place between the atmosphere and the lungs.
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:
Explain the three pathways of breakdown in living organisms.
Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?
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 |
