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

Question # 1

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

Ans 1: Aldosterone and ADH help in full conservation of water in proximal convoluted part of the nephron and concerned with maintenance of urine concentration

Question # 2

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.

Question # 3

Differentiate between ureotelic and uricotelic animals.

Ans 1: Ureotelic Animals: Animals which excrete urea are called ureotelic e.g sharks.
Ans 2: Uricotelic Animals: Animals which excrete uric acid are called Uricotelic.e.g Birds, insects.

Question # 4

What is flame cell Why it is called so?

Ans 1: Flame cell is the part of excretory system of planaria.It is called flame cell because it has tuft of cilia, which looks like flickering flame of candle.

Question # 5

Define excretophore./what are excretophores %why?

Ans 1: Leaves are called excretophore because they collect nitrogenous waste from different plant parts and they store temporarily, at autumn season plants shed their leaves and wastes are removed from plant body.

Question # 6

Write two types of synthesis functions of liver and effects on homeostasis.

Ans 1: Synthesis function of liver include.
1. Synthesis of urea, ammonia and uric acid. It assists kidney for the removal of wastes.
2. Synthesis of plasma proteins like proteins like prothrombin and fibrinogen. it maintains osmotic balance of blood and help in blood clotting.

Question # 7

Why ammonia is more toxic than other nitrogenous wastes?

Ans 1: Ammonia is very toxic and dissolve quickly in body fluids,Thus it must be kept in low concentration in the body.To maintain low concentration below that of body requires, large volume of water is used to eliminate it as urine.

Question # 8

What are juxtamedullary nephrons?

Ans 1: Nephrons are arranged along the border of cortex so that their tubular system looping deep in inner medulla are called juxtamedullary nephrons.These juxtamedullary nephrons are specifically involved in the production of concentrated urine.

Question # 9

Write a short note on kidney transplantation.

Ans 1: Dialysis is used temporerily.In high degree renal failure also called uremia or end stage renal disease.The dialysis is replaced by surgical transplantation of kidney of a matching donor kidney is the only option left as the permanent treatment. Kidney Should be of nearest to avoid tissue rejection.

Question # 10

Write four osmoregulatory adaptations in xerophytes.

Ans 1: They have following adaptations:
1. Sunken stomata
2. Thick cuticle
3. Water storing tissues
4. Reduced or complete absence of leaves.

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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

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

What is hemodialysis and peritoneal dialysis?

Differentiate between ureotelic and uricotelic animals.

What is flame cell Why it is called so?

Define excretophore./what are excretophores %why?

Write two types of synthesis functions of liver and effects on homeostasis.

Why ammonia is more toxic than other nitrogenous wastes?

What are juxtamedullary nephrons?

Write a short note on kidney transplantation.

Write four osmoregulatory adaptations in xerophytes.

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

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

What is hemodialysis and peritoneal dialysis?

Differentiate between ureotelic and uricotelic animals.

What is flame cell Why it is called so?

Define excretophore./what are excretophores %why?

Write two types of synthesis functions of liver and effects on homeostasis.

Why ammonia is more toxic than other nitrogenous wastes?

What are juxtamedullary nephrons?

Write a short note on kidney transplantation.

Write four osmoregulatory adaptations in xerophytes.

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

Why ammonia is more toxic than other nitrogenous wastes?

Define Excretion.

What is hemodialysis and peritoneal dialysis?

Give the role of contractile vacuole.

Illustrate the function of Malpighian Tubules.

Define the process of painting with one example.

Define Homeostasis.

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

Name two hormones involved in nephron.

Write structural adaptation for regulation of heat exchange between animals and environment.

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

What is hemodialysis and peritoneal dialysis?

Give two adaptation of plants to high temperature condition.

Illustrate the function of Malpighian Tubules.

What is flame cell Why it is called so?

What are Xerophytes?Give its examples.

What is hypercalcemia? Give its effects.

Define the process of painting with one example.

Differentiate between hydrophytes and mesophytes.

Name two hormones involved in nephron.

Define Homeostasis.

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

What is metanephridium?

Differentiate between hydrophytes and mesophytes.

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

Define Excretion.

What are different metabolic wastes in humans?

Give two adaptation of plants to high temperature condition.

What is lithotripsy?

Define anhydrobiosis with an example.

What is hypertonic environment and what changes occur in a cell in such environment?

What is vasa recta?

12th Class Biology Chapter 15 Short Questions

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