Answered

IDNLearn.com makes it easy to get reliable answers from knowledgeable individuals. Our platform is designed to provide accurate and comprehensive answers to any questions you may have.

Section B: Explain the Respiratory Structures and Work Calculation

1. Explain how each of the following respiratory structures in humans is adapted to its function:
a. Nasal chamber
b. Diaphragm
c. Alveoli

2. Define work and calculate the work done:
a. Define work.
b. A stone of mass 500.0 g is raised to a height of 20.0 m above the ground. If the acceleration due to gravity is [tex]$10.0 \, \text{m/s}^2$[/tex], calculate the work done on the stone.

3. Poultry and Exotic Breeds:
a. Explain the term poultry as used in animal production.
b. Give three advantages of exotic breeds of birds over local breeds.

Section C: Gaseous Exchange in Plants and Electrical Appliance Calculation

4. Explain gaseous exchange in plants and plant excretion:
a. Explain how gaseous exchange in plants occurs during the night.
b. Describe briefly how plants excrete water.

5. Electrical Appliance Calculation:
a. An electrical appliance rated 1.5 kW, 240V is left running for 2 hours. Calculate the:
i. Current drawn.
ii. Electrical energy consumed.

6. Animal Breeds:
a. Explain the term animal breed.
b. Name three breeds of rabbit.

Sagot :

GinnyAnsweridn

Final answer:

Explanation of how nasal chamber, diaphragm, and alveoli are adapted to their respiratory functions.


Explanation:

Respiratory Structures Adapted to Function

(i) Nasal chamber: The nasal chamber is lined with mucous membranes and tiny hairs called cilia, which help filter and humidify air before it enters the respiratory system.

(ii) Diaphragm: The diaphragm is a dome-shaped muscle below the lungs that contracts and flattens during inhalation, increasing the chest cavity volume and allowing air to flow into the lungs.

(iii) Alveoli: Alveoli are tiny air sacs in the lungs where gas exchange occurs. Their structure, with a thin membrane and a rich blood supply, maximizes the diffusion of oxygen and carbon dioxide.


Learn more about Respiratory Structures Adaptation here:

https://brainly.com/question/51225024


Thank you for using this platform to share and learn. Keep asking and answering. We appreciate every contribution you make. Thank you for choosing IDNLearn.com for your queries. We’re here to provide accurate answers, so visit us again soon.