Advertisements
Advertisements
Question
Which of the following statements are true about respiration?
(i) during inhalation, ribs move inward and diaphragm is raised.
(ii) the gaseous exchange takes place in the alveoli.
(iii) haemoglobin has greater affinity for carbon dioxide than oxygen.
(iv) alveoli increase surface area of the exchange of gases
Options
(i) and (iv)
(ii) and (iii)
(i) and (iii)
(ii) and (iv)
Solution
(ii) and (iv)
Statements (ii) and (iv) are correct. The explanation for incorrect statements is given below:
(i) During inhalation, ribs move outward and the diaphragm moves downward.
(iii) Haemoglobin has a greater affinity for carbon monoxide than oxygen.
APPEARS IN
RELATED QUESTIONS
Cellular respiration takes place in
(a) Lysosome
(b) Chlorophyll
(c) Mitochondria
(d) Ribosome
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
The mountaineers carry oxygen with them because ______.
Name the areas in a woody stem through which respiratory exchange of gases takes place.
Name the red pigment which carries oxygen in blood.
Fill in the following blank with suitable word:
Gills are the breathing organs in ___________.
Define breathing. State the differences between breathing and respiration.
Which of the following is known as the energy currency of the cells in biology?
The breathing and respiration in woody stem of a plant takes place through:
Fill in the following blanks with suitable words:
The ___________ blood cells make antibodies whereas ___________ blood cells help in respiration.
Rewrite the following statement by selecting the correct option.
During respiration, ____________ gas is given out.
Answer the following question.
A gas is released during photosynthesis. Name the gas and also state the way by which the gas is evolved.
Complete the analogy.
Transport of CO2 by plasma : 7% :: Transport of CO2 by bicarbonate ions: ____________.
term 'respiration' includes
What is common between extensive network of blood vessels around walls of alveoli and in glomerulus of nephron?
Which of the following equations is the summary of photosynthesis?
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?
Mark the following statement as True or False. Correct the false statement.
Exhaled air has more percentage of CO2 than inhaled air
On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school. They observed that the air coming out of their mouth looked like smoke. They were amused and wondered how it happened. Help them find the answer.
With the reference to four gases CO2, CO, Cl2 and O2, which one of the options in the table is correct?
