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

Question # 1

Define Excretion.

Ans 1: Removal of waste products (especially nitrogenous wastes) from the body is called excretion.

Question # 2

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 # 3

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 # 4

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 # 5

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 # 6

What are Xerophytes?Give its examples.

Ans 1: Plant which grow under drought or in extreme shortage of water theses plants are called xerophytes. E.g, Cacti, Opuntia, Calatropis.

Question # 7

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 # 8

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 # 9

What is vasa recta?

Ans 1: In juxtamedullary nephrons additional capillaries extend down to from a loop of vessels called vasa reata.

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

Define Excretion.

What are juxtamedullary nephrons?

What is flame cell Why it is called so?

What is metanephridium?

Define dialysis.Give its types.

What are Xerophytes?Give its examples.

Described the structure of a flame cell.

Write a short note on kidney transplantation.

What is vasa recta?

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

Define Excretion.

What are juxtamedullary nephrons?

What is flame cell Why it is called so?

What is metanephridium?

Define dialysis.Give its types.

What are Xerophytes?Give its examples.

Described the structure of a flame cell.

Write a short note on kidney transplantation.

What is vasa recta?

Differentiate between hydrophytes and mesophytes.

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

Write a short note on kidney transplantation.

What is hypercalcemia? Give its effects.

Differentiate between hypotonic and hypertonic solution.

Define excretophore./what are excretophores %why?

What are different metabolic wastes in humans?

What is metanephridium?

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

Define anhydrobiosis with an example.

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

Name waste products produced during metabolism of purine and pyrimidine.

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

What is flame cell Why it is called so?

Why ammonia is more toxic than other nitrogenous wastes?

Define Homeostasis.

Define excretophore./what are excretophores %why?

Explain briefly glomerular filtrate.

Name waste products produced during metabolism of purine and pyrimidine.

Differentiate between hypotonic and hypertonic solution.

Differentiate between osmoregulation and thermoregulation.

What is counter-current multiplier.

Give four adaptation of xerophytes.

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

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

What are heat-shock proteins?

Differentiate between ureotelic and uricotelic animals.

Why leaves are said to be excretophore?

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

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

What are juxtamedullary nephrons?

What are heterotherms?Give example.

Differentiate between hydrophytes and mesophytes.

Define Homeostasis.

12th Class Biology Chapter 15 Short Questions

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