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

Question # 1

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 # 2

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

Ans 1: The more concentrated external environment is called hypertonic environment. The hypertonic environment makes the cell solution concentrated and cell shrinks due loss of water.

Question # 3

Differentiate between hypotonic and hypertonic solution.

Ans 1: Hypotonic Solution: Dilutes solution compared to the cell concentration is called hypotonic solution.
Ans 2: Hypertonic Solution: The more concentrated external environment as compared to cell is called hypertonic solution.

Question # 4

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 # 5

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 # 6

Name waste products produced during metabolism of purine and pyrimidine.

Ans 1: Waste products of purine and pyrimidine are hypoxanthine, xanthine, uric acid, allantoin, urea and ammonia.

Question # 7

Illustrate the function of Malpighian Tubules.

Ans 1: Malpighian tubules extracted waste products from the haemolymph of insects and they pour it into digestive tract, where they are converted into nitrogenous wastes

Question # 8

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 # 9

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 # 10

Differentiate between hydrophytes and mesophytes.

Ans 1: Hydrophytes: Hydrophytes are the plant which grow in aquatic environment (abundant water),they have large leave surface area and stomata are present on the upper side of leaves, they have high rate of transpiration. E.g., Water lilli, Wolfia, Pistia etc.
Ans 2: Mesophytes: These are the plants which grow on land where moderate water is available: they open their stomata during flooding and close stomata during drought.For Example: rose and mango.

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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 juxtamedullary nephrons?

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

Differentiate between hypotonic and hypertonic solution.

Write a short note on kidney transplantation.

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

Name waste products produced during metabolism of purine and pyrimidine.

Illustrate the function of Malpighian Tubules.

Why ammonia is more toxic than other nitrogenous wastes?

What is flame cell Why it is called so?

Differentiate between hydrophytes and mesophytes.

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 juxtamedullary nephrons?

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

Differentiate between hypotonic and hypertonic solution.

Write a short note on kidney transplantation.

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

Name waste products produced during metabolism of purine and pyrimidine.

Illustrate the function of Malpighian Tubules.

Why ammonia is more toxic than other nitrogenous wastes?

What is flame cell Why it is called so?

Differentiate between hydrophytes and mesophytes.

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

Explain briefly glomerular filtrate.

What is hypercalcemia? Give its effects.

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

Write four osmoregulatory adaptations in xerophytes.

What is renal failure?

Illustrate the function of Malpighian Tubules.

What is vasa recta?

What are juxtamedullary nephrons?

What are Xerophytes?Give its examples.

Why ammonia is more toxic than other nitrogenous wastes?

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

Illustrate the function of Malpighian Tubules.

Define Excretion.

What are different metabolic wastes in humans?

Give adaptation of marine fish for its survival in cold environment.

What are juxtamedullary nephrons?

Give four adaptation of xerophytes.

Define the process of painting with one example.

Define Homeostasis.

What are heat-shock proteins?

Differentiate between hypotonic and hypertonic solution.

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

Define Excretion.

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

Define excretophore./what are excretophores %why?

What is vasa recta?

What is metanephridium?

What is lithotripsy?

Define Homeostasis.

Give two adaptation of plants to high temperature condition.

What are heat-shock proteins?

What is hemodialysis and peritoneal dialysis?

12th Class Biology Chapter 15 Short Questions

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