Tag: structures and functions related to the excretory system

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Questions Related to structures and functions related to the excretory system

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Match the pair of items with the category of organs

  1. Nephridia of earthrowm and malpighian tubules of cockroach - excretory organ

  2. Wings of honey bee and crow homologous organs

  3. Nictitating membrane and blind spot in human eye-vestigial ogans

  4. Thorns of bougainvillea and tendrils of cucurbita - analogous organs.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Earthworms (annelids) have slightly more evolved excretory structures called nephridia. A pair of nephridia is present on each segment of the earthworm. Excretion occurs through a pore called the nephridiopore. Malpighian tubules are found lining the gut of some species of arthropods, such as the bee. They are usually found in pairs and the number of tubules varies with the species of insect.


So, the correct option is 'Option A'.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Which is not an excretory organ of vertebrates?

  1. Liver

  2. Lungs

  3. Hepatopancreas

  4. Skin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hepatopancreas is not an excretory organ of vertebrates. It is a glandular excretory organ present in many invertebrates like arthropods and molluscs. It shows functions similar to liver and pancreas of vertebrates.

So, the correct answer is 'Hepatopancreas'.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

In which one of the following organisms, its excretory organs are correctly stated

  1. Cockroach - Malpighian tubules and enteric caeca

  2. Earthworm - Pharyngeal, integumentary and septal nephridia

  3. Frog - Kidneys, skin and buccal epithelium

  4. Humans - Kidneys, sebaceous glands and tear glands
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The excretory system of earthworm consists of nephridia as the excretory organ which is analogous to the kidney of vertebrates. Nephridia are porous, long, thin coiled tube which is found in all segments except first three. Based on their position in the body, they are three types pharyngeal, integumentary and septal nephridia.
So, the correct answer is 'Option B'.
Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Select the correct match of animal, excretory organs and product.

  1. Salamander- Kidney- urea

  2. Peacock- Kidney- urea

  3. Housefly- Renal tubules- uric acid

  4. <p>Labeo- Nephridial tubes- Ammonia</p>
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Salamander belongs to the phylum Chordata and class amphibia. Just like humans, the salamander has two kidneys which excrete urea as the nitrogenous waste product. Two kidneys are extremely important in excreting nitrogenous waste, and the urinary bladder stores waste in the form of urea before it is released into the environment.

So, the correct answer is 'Salamander-Kidney-Urea'.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

When a fresh water protozoan is placed in marine water

  1. The contractile vacuole disappears

  2. Contractile vacuole increases in size

  3. A number of contractile vacuoles appear

  4. The contractile vacuole remains unchanged.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The function of a contractile vacuole in protozoan is to expel out excess water. When a freshwater protozoan is placed in marine water the contractile vacuole disappears because the function of contractile vacuole is to expel out excess water but in case of marine water, The water should be retained instead of expelled.
So, the correct answer is 'The contractile vacuole disappears'.
Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Excretion in Hydra occurs through

  1. Flame cells

  2. Nephridia

  3. Cnidoblasts

  4. General body surface
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydra is sessile and cylindrical in shape belonging to the phylum Cnidaria and class Hydrozoa. It has no specialized excretory organs hence excretion in hydra occurs by diffusion through the general body surface.

So, the correct answer is 'General body surface'.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Find the wrongly matched pair of animal and its excretory structure.

  1. Balanoglossus- Proboscis gland

  2. Earthworm- Nephridia

  3. Grasshopper- Malpighian tubules

  4. Prawn- Flame cells

  5. Amphioxus- Protonephridia
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Green glands are excretory organs of crustaceans. For example, prawn. They are also called antennal glands because these glands are located near the base of larger antennae. Each gland has three parts end sac, labyrinth and bladder. The labyrinth is the proper excretory gland. Hence green glands help in excretion.

So, the correct answer is 'Prawn- Flame cells'.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Green glands are excretory organs of

  1. Crustaceans

  2. Centipedes

  3. Annelids

  4. Molluscs
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Green glands are excretory organs of crustaceans. They are also called antennal glands because these glands are located near the base of larger antennae. Each gland has three parts end sac, labyrinth and bladder. The labyrinth is the proper excretory gland.

So, the correct answer is 'Crustaceans'.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Excretory structures of rotifers are

  1. Green glands

  2. Malpighian tubules

  3. Flame cells

  4. Gills

  5. Kidneys
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rotifers are microscopic aquatic animals belonging to phylum rotifera. They eat dead bacteria, algae and protozoans. The excretory structures of rotifers are Flame cells. The flame cells function like a kidney, removing nitrogenous waste.

So, the correct answer is 'Flame cells'.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Archinephros occurs in

  1. Adult hagfish

  2. Larva of hagfish

  3. Molluscs

  4. Anamniotes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Hagfish belongs to the class Myxini. Archinephros or ancestral vertebrate kidney are retained by larvae of hagfish and of some caecilians. Archinephros extend from anterior to the posterior end of the body, with segmentally arranged glomeruli and nephrostomes. Glomeruli received blood from the dorsal aorta and filtered nitrogenous wastes into the coelom, from where they were collected by the nephrostomes and transported to outside via collecting ducts and archinephric ducts.
So, the correct answer is 'Larva of hagfish'.