MENU

Chapter 6 Life Process Solutions

Question - 31 : - What would be the consequences of a deficiency of hemoglobin in our bodies?

Answer - 31 : - Hemoglobin is a protein responsible for transportation of oxygen to the body cells for cellular respiration. Deficiency of Hemoglobin can affect the oxygen carrying capacity of RBC’S. This lead to lack of oxygen in our body cells. Hemoglobin deficiency leads to a disease called as anemia.

Question - 32 : - Describe double circulation of blood in human beings. Why is it necessary?

Answer - 32 : -

Double circulation means, in a single cycle blood goes twice in the heart. The process helps in separating oxygenated and deoxygenated blood to maintain a constant body temperature.
The double circulatory system of blood includes
• Pulmonary circulation
• Systemic circulation.
Pulmonary circulation:
The right ventricle pumps deoxygenated blood into the lungs where it is oxygenated. The oxygenated blood is brought back to the left atrium, from there it is pumped into the left ventricle and finally blood goes into the aorta for systemic circulation.
Systemic circulation:
The oxygenated blood is pumped to various parts of the body from the left ventricle. The deoxygenated blood from different parts of the body passes through vena cava to reach right atrium. The right atrium transfers the blood into right ventricle.

Question - 33 : - What are the differences between the transport of materials in xylem and phloem?

Answer - 33 : -

Transport of materials in Xylem

Transport of materials in phloem

Xylem tissue helps in the transport of water and minerals.

Phloem tissue helps in the transport of food

Water is transported upwards from roots to all other plant parts.

Food is transported in both upward and downward directions.

Question - 34 : - Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.

Answer - 34 : -

Alveoli

Nephrons

Structure

Structure 

(i) Alveoli are tiny balloon-like structures present inside the lungs.

(i) Nephrons are tubular structures present inside the kidneys.

(ii) The walls of the alveoli are one cell thick and it contains an extensive network of blood capillaries.

(ii) Nephrons are made of glomerulus, Bowman’s capsule, and a long renal tube.

Function

Function

(i) The exchange of O2 and CO2 takes place between the blood of the capillaries that surround the alveoli and the gases present in the alveoli.

(i) The blood enters the kidneys through the renal artery. The blood is entered here and the nitrogenous waste in the form of urine is collected by collecting duct.

(ii) Alveoli are the site of gaseous exchange.

(ii) Nephrons are the basic filtration unit.

Free - Previous Years Question Papers
Any questions? Ask us!
NodeJS Interview Questions Answers
ASP.Net Interview Questions Answers
Interview Questions Answers
×