Fsc part 2 online preparation for biology chapter 15 (Homeostasis)

Question # 1

Explain briefly glomerular filtrate.

Ans 1: It is the filtrate which is produced by the filtration of blood from the glomerulus,it contains glucose,amino acid,small blood cells,salts,nitrogenous wastes and water.

Question # 2

Define anhydrobiosis with an example.

Ans 1: The ability to tolerate dehydration, this process is called anhydrobiosis.For example: Kangaroo Rat a desert animal can tolerate dehydration without drinking water by feeding desert plants containing more carbohydrates, which produce water of metabolism.

Question # 3

Define dialysis.Give its types.

Ans 1: When the kidneys of a patient are failed then nitrogenous wastes are removed by filtering blood through dialysis.Dialyzing machine is called artificial kidney machine.
It has two types:
1. Peritoneal dialysis
2. Hemodialysis

Question # 4

What are heat-shock proteins?

Ans 1: Most plants have adopted to survive in heat stress as the plants of temperate regions face the stress of 40°C and above temperature.The cells of these plants synthesize large quantities of special proteins called heat shock proteins.These proteins embrace enzymes and other proteins thus help to prevent denaturation.

Question # 5

Why leaves are said to be excretophore?

Ans 1: The falling of yellow leaves in autumn is the seasonal time for the plants to get rid of the accumulated wastes and because of this reason leaves are said to be excretophore.

Question # 6

What is metanephridium?

Ans 1: It is the excretory organ of earthworm and other annelids.In each segment of the body metanephridium is present which individually collects the wastes and then remove them.

Question # 7

What is counter-current multiplier.

Ans 1: This mechanism causes gradual osmotic out flow from the filtrate back to kidneys as it passes downward in the descending loop of Henle.Furthermore, ascending loop of henle does not allow out flow of water from its filtrate,instead actively transport sodium ions into kidney interstitium to sustain its high concentration.

Question # 8

Described the structure of a flame cell.

Ans 1: It is a complete eukaryotic cell.It has a unucles, other cell organelles and a cavity where the waste products are collected.Each flame cell has a tuft of cilia, whose beating propel interstitial fluid into the tubular system

Question # 9

Define Homeostasis.

Ans 1: The protection of internal environment from the harms of fluctuation in external environment is called homeostasis.The homeostasis keeps the internal fluctuation in a narrow range with various control systems compared to wider external fluctuation. The control system would not let the body flooded with water in abundant supply of water.

Question # 10

What is hemodialysis and peritoneal dialysis?

Ans 1: Hemodialysis: mean cleaning of blood. In it blood is circulates through a machine which contains a dialyzer. Dialyzer has two spaces separated by thin membrane. Blood passes through one side of membrane and dialysis fluid from other side. The waste and excess water pass from the blood through the membrane into the dialysing fluid.
Ans 2: Peritoneal dialysis: work on same principle except abdomen has a peritoneal cavity, lined by a thin epithelium called peritoneum. Peritonial cavity is filled with dialysis fluid that enters the body through a catheter. Excess water and wastes pass through the peritoneum into the dialysing fluid.

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Fsc part 2 online preparation for biology chapter 15 (Homeostasis)

Online Short Questions For Chapter 1 "12th Class Biology Chapter 15 Short Questions Preparation "

Biology - 12th Class Biology Chapter 15 Short Questions Preparation

Explain briefly glomerular filtrate.

Define anhydrobiosis with an example.

Define dialysis.Give its types.

What are heat-shock proteins?

Why leaves are said to be excretophore?

What is metanephridium?

What is counter-current multiplier.

Described the structure of a flame cell.

Define Homeostasis.

What is hemodialysis and peritoneal dialysis?

Prepare Complete Set Wise Questions For Chapter 1 "12th Class Biology Chapter 15 Short Questions Preparation "

Set 1

Set 2

Set 3

Set 4

12th Class Biology Chapter 15 Short Questions Preparation - Set 1

Explain briefly glomerular filtrate.

Define anhydrobiosis with an example.

Define dialysis.Give its types.

What are heat-shock proteins?

Why leaves are said to be excretophore?

What is metanephridium?

What is counter-current multiplier.

Described the structure of a flame cell.

Define Homeostasis.

What is hemodialysis and peritoneal dialysis?

12th Class Biology Chapter 15 Short Questions Preparation - Set 2

What is flame cell Why it is called so?

What are Xerophytes?Give its examples.

What are heat-shock proteins?

Name two hormones involved in nephron.

What is metanephridium?

Why leaves are said to be excretophore?

What are effects of ADH and Aldosterone on work of nephron?

Define Homeostasis.

What is lithotripsy?

Name waste products produced during metabolism of purine and pyrimidine.

12th Class Biology Chapter 15 Short Questions Preparation - Set 3

What is vasa recta?

Define dialysis.Give its types.

Give two adaptation of plants to high temperature condition.

Write a short note on kidney transplantation.

Illustrate the function of Malpighian Tubules.

Define Excretion.

What are heterotherms?Give example.

Define the process of painting with one example.

What is lithotripsy?

Define Homeostasis.

12th Class Biology Chapter 15 Short Questions Preparation - Set 4

What is counter-current multiplier.

Define dialysis.Give its types.

Differentiate between hypotonic and hypertonic solution.

Give the role of contractile vacuole.

Differentiate between hydrophytes and mesophytes.

What is vasa recta?

Why ammonia is more toxic than other nitrogenous wastes?

What are Xerophytes?Give its examples.

Name waste products produced during metabolism of purine and pyrimidine.

Define anhydrobiosis with an example.

12th Class Biology Chapter 15 Short Questions

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