Tick the correct answer:
1. No energy is released during:
(a) exhalation c. inhalation. d. all of this
(b) breathing
Oxygen and carbon dioxide are exchanged in:
(a) alveoli c. bronchioles. d. bronchi
(b) tracheae
3. During inhalation, the ribcage moves :
(a) upward and outward. b. downward only d. inward only
(c) inward and downward
Unicellular organisms breathe through:
(a) gills
(b) body surface
(b) downward only
c. lungs
(d) none of these
Answers
Answer:
1. exhalation
2.alveoli
3.upward and outward
4.body surface
1. Option D : All of these
Breathing is a mechanical process that has the role of taking in oxygen and removing carbon dioxide. It is not involved in any biological reactions or energy releases. Inhalation i.e. intake of oxygen and Exhalation i.e. out a way of Carbon dioxide are a part of Breathing.
Respiration on the other hand is a life process and releases energy by oxidizing and processing the food.
2. Option A : Alveoli
Trachea is like a wind-pipe near the larynx that is used to carry air in and out from the lungs. Further from the trachea, the air is passed to bronchi tubes each to the left and right lung. Bronchi further break down to bronchioles and alveoli finally.
Alevoli at the least level is where the gases are actually exchanged and the energy is released.
3. Option A : Upward and Outward
During inhalation, one part i.e. the diaphragm moves downward and the ribs move upwards and outwards. This leads to the contraction of muscles which decreases the pressure.
By this, the pressure inside the body becomes less than outside the body which enables the intake of air from outside.
4. Option B : Body Surface
Unicellular organisms are tiny and thus lack proper, specialized, and complex breathing organs like lungs and gills. Instead, they have a mechanism to diffuse air through their body surface and respire.
To learn more about Respiration, visit
https://brainly.in/question/17525370
#SPJ3