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BiologyClass 10ICSE

In the lungs: (a) What substance is taken into the body? (b) What substance is removed from the body?

Oxygen is taken into the The oxygen is transported to all parts of the body through blood. Carbon dioxide is removed from the The impure blood containing carbon dioxide is brought back to the lungs and then exhaled.

BiologyClass 10ICSE

What organs are attached to the two bronchi?

The two lungs are attached to the two bronchi. The lungs are a pair of spongy, air-filled organs located on either side of the chest. These are the vital organs of the respiratory system.

BiologyClass 10ICSE

What is the other name of the wind-pipe?

Wind-pipe is also known as a trachea. The trachea, is a cartilaginous tube that connects the larynx to the bronchi of the lungs which allows the passage of air.

BiologyClass 10ICSE

What is the name of tiny air-sacs at the end of smallest bronchioles in the lungs?

Alveoli are the tiny air sacs at the end of smallest bronchioles in the lungs. These are tiny, balloon- shaped air sacs sit at the very end of the respiratory tract and are arranged in clusters throughout the lungs. Gas exchange takes place in the alveoli of the lungs.

BiologyClass 10ICSE

Where in the lungs does gas exchange take place?

Gas exchange takes place in the alveoli of the lungs. These are tiny, balloon-shaped air sacs sit at the very end of the respiratory tract and are arranged in clusters throughout the lungs.

BiologyClass 10ICSE

Name the red pigment which carries oxygen in blood.

Hemoglobin is the red pigment that is present in red blood cells. The main purpose of hemoglobin is to transport oxygen to all parts of the body from lungs.

BiologyClass 10ICSE

Which gases are exchanged in your lungs?

Carbon dioxide and oxygen are exchanged in the lungs. Lungs purifies the inhaled air and transport to all parts of body. The impure air containing carbon dioxide is exhaled.

BiologyClass 10ICSE

The trachea divides into two tubes at its lower end. What is the name of these tubes?

The trachea divides into two tubes at its lower end, which are known as bronchi. These are the airways that lead from the trachea into the lungs, and then branch into smaller bronchioles.

BiologyClass 10ICSE

Where does the blood absorb oxygen in the human body?

Blood absorbs the oxygen in the small organelles also known as Alveoli (singular name is Alveolus). These are present in the lungs.

BiologyClass 10ICSE

Name two animals which breathe through gills.

Aquatic animals like sharks and tadpoles breathe through gills. Aquatic animals may breathe air or extract oxygen that dissolved in water through specialized organs called gills, or directly through the skin.

BiologyClass 10ICSE

Name an animal that depends on simple diffusion of gases for breathing.

Spongilla depends on simple diffusion of gases for breathing.

BiologyClass 10ICSE

Name the organs of breathing in fish.

In fish, gills are the organs of breathing. Aquatic animals may breathe air or extract oxygen that dissolved in water through specialized organs called gills, or directly through the skin.

BiologyClass 10ICSE

Name an animal which absorbs oxygen through its moist skin.

Frog absorb oxygen through their moist skin. These come under the class of amphibians. Almost all amphibians have thin, moist skin that helps them breathe.

BiologyClass 10ICSE

Out of photosynthesis and respiration in plants, which process occurs: (a) all the time? (b) Only during daytime?

Respiration occurs all the Respiration is the process through which plants breathe and it happens all the time. Photosynthesis occurs only at daytime as it can take place only in the presence of

BiologyClass 10ICSE

What is the name of the extensions of the epidermal cells of a root which help in respiration?

Root hair is the extension of the epidermal cells of a root, which help in respiration. Root hairs act like a sponge underground. They absorb nutrients and water which are sent through the tip of the plant's root.

BiologyClass 10ICSE

Name the areas in a woody stem through which the respiratory exchange of gases takes place.

<p>The outer covering of the woody stems, which is known as the bark, has lenticels through which respiratory exchange of gases takes place. Lenticels are raised surface on the bark made up of porous tissues composed of cells with large intercellular spaces.</p>

BiologyClass 10ICSE

Name the pores in a leaf through which respiratory exchange of gases takes place.

Stomata are the pores present on the surface of the leaves through which exchange of gases takes place. Stomata also helps in the transpiration, in which the loss of water from the surface of leaves in the form of water vapor.

BiologyClass 10ICSE

Name the process by which plant parts like roots, stems, and leaves get oxygen required for respiration.

All the plant parts like roots, stems and leaves get oxygen by passive diffusion, which is required for respiration. Diffusion occurs in plant cells. Carbon dioxide diffuses from the air through tiny pores in plant leaves called stomata. Oxygen produced by photosynthesis diffuses from the plant through the stomata into the atmosphere.

BiologyClass 10ICSE

Which part of roots is involved in the exchange of respiratory gases?

Root hair is involved in the exchange of respiratory gases as they are in direct contact with the air present in the soil. These contain pore in the outer layer of the roots that helps in exchanging the gases.

BiologyClass 10ICSE

In which type of respiration, aerobic or anaerobic, more energy is released?

In aerobic respiration, more energy is released because there is a complete breakdown of food. In this process glucose breaks down in the presence of a sufficient amount of oxygen and hence more energy is released.

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