D. Answer the following questions in brief.
1.
Define respiration. Name the two types of respiration,
2.
Name the respiratory organ of the following:
(a) crab
(b) man
(c) leech
(d) an insect
3.
Define transpiration.
4.
Define the term 'breathing rate'.
5.
Name the body organs which help lungs during the process of breathing.
6.
Why do we need to breathe out carbon dioxide?
Answers
Answer:
1) the act or process of breathing : the inhaling of oxygen and the exhaling of carbon dioxide. 2 : the process by which cells use oxygen to break down sugar and obtain energy. respiration. noun.
There are two types of Respiration:
Aerobic Respiration — Takes place in the presence of oxygen.
Anaerobic Respiration –Takes place in the absence of oxygen.
2) a) crab = grills
b) man = lungs
c) leech = cutaneous body surface
d) an insect = trachea
3) Transpiration is the loss of water from a plant in the form of water vapor. Water is absorbed by roots from the soil and transported as a liquid to the leaves via xylem. In the leaves, small pores allow water to escape as a vapor.
4) A Breath is one inhalation and one exhalation. The number of times a person breathe during a minute is called his breathing rate.
5) Many organs take part in the process of respiration in Humans. Various organs are: Nose, Nasal passage or Nasal cavity, Trachea, Bronchi, Lungs and Diaphragm.
6)When we take a breath, we pull air into our lungs that contains mostly nitrogen and oxygen. When we exhale, we breathe out mostly carbon dioxide. ... Oxygen helps our cells work harder by breaking down the nutrients we get from food like sugars. With sugars and oxygen, our cells can create the energy they need to function.
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1. A process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.
Two types of respiration :
▶Aerobic
▶Anaerobic
2. (a) crab ➡ gills
(b) man ➡ lungs
(c) leech ➡ skin
(d) an insect ➡ tracheae
3. The exhalation of water vapour through the stomata is known as transpiration.
4. The respiratory rate is the rate at which breathing occurs. This is usually measured in breaths per minute and is set and controlled by the respiratory centre.
5.The respiratory system consists of all the organs involved in breathing. These include the nose, pharynx, larynx, trachea, bronchi and lungs.
6..Breathing uses chemical and mechanical processes to bring oxygen to every cell of the body and to get rid of carbon dioxide. Our body needs oxygen to obtain energy to fuel all our living processes. Carbon dioxide is a waste product of that process.