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Excretory Products and their Elimination (Class - XI)

Covers types of nitrogenous waste (ammonia, urea, uric acid), excretory organs across organisms, kidney structure and function, and patterns of excretion in different animals for Class XI Biology students.

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Epithelium found in PCT of nephrons is

  1. transitional epithelium
  2. squamous epithelium
  3. brush bordered epithelium
  4. ciliated epithelium
Question 2 Multiple Choice (Single Answer)

Uric acid is the end product of

  1. purine metabolism
  2. fat metabolism
  3. protein metabolism
  4. alcohol metabolism
Question 3 Multiple Choice (Single Answer)

Which of the following organisms is ammonotelic?

  1. Man
  2. Boney fish
  3. Cartilaginous fish
  4. Bird
Question 4 Multiple Choice (Single Answer)

Which is the main gaseous waste product of the human body?

  1. NH3
  2. CO2
  3. H2S
  4. O2
Question 5 Multiple Choice (Single Answer)

In which of the following organisms are malpighian tubules found as excretory organs?

  1. Prawn
  2. Cockroach
  3. Planaria
  4. Earthworm
Question 6 Multiple Choice (Single Answer)

Which among the following is a nitrogenous waste product in spiders?

  1. Trimethylamine oxide
  2. Guanine
  3. Uric acid
  4. Urea
Question 7 Multiple Choice (Single Answer)

What is ammonotelism?

  1. Fixing of atmospheric nitrogen by soil bacteria
  2. Elimination of nitrogenous waste in the form of ammonia
  3. Production of ammonia or ammonium compounds in the decomposition of organic matter, especially through the action of bacteria
  4. Elimination of nitrogen in the form of urea
Question 8 Multiple Choice (Single Answer)

What is nephrostome?

  1. The main tubular part of nephridia
  2. The funnel-shaped inner opening of a nephridium that is lined with cilia and allows water and waste to enter from the body cavity
  3. The short and narrow tube where nephridial duct opens
  4. A large number of smaller nephridia
Question 9 Multiple Choice (Single Answer)

Which of the following excretory organs is/are not found in humans?

  1. Lungs
  2. Skin
  3. Kidney
  4. Spleen
Question 10 Multiple Choice (Single Answer)

Ureotelic excretion is found in

  1. mammals
  2. amphibians
  3. reptiles
  4. Both (1) and (2)
  5. spleen
Question 11 Multiple Choice (Single Answer)

What is metanephric kidney?

  1. The functional kidney of vertebrate embryonic period
  2. The functional kidney of fishes, amphibians and petromyzon
  3. The functional kidney of adult reptiles, birds and mammals
  4. The functional kidney of molluscs
Question 12 Multiple Choice (Single Answer)

In which group of animals does trimethylamine oxide occur as a waste product?

  1. Spiders
  2. Teleost fishes
  3. Cockroaches
  4. Human beings
Question 13 Multiple Choice (Single Answer)

Excretory products of mammalian embryo are eliminated by _____.

  1. placenta
  2. amniotic sac
  3. allantois
  4. uterus
Question 14 Multiple Choice (Single Answer)

Which of the following organs excrete(s) vitamins, bile pigments, drugs, cholesterol and also help(s) in detoxification of nitrogenous waste?

  1. Lungs
  2. Liver
  3. Kidneys
  4. Intestine
Question 15 Multiple Choice (Single Answer)

Kidney is involved in the excretion of

  1. urea, extra salts and excess water
  2. extra urea, salts and extra water
  3. extra urea, extra water and extra amino acids
  4. extra urea, extra salts and carbohydrates
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