Excretory Organs in Different Organisms
Excretory Organs in Different Organisms: Overview
This topic provides knowledge of the excretory organs in invertebrates and vertebrates. It briefs on the excretory organs of cockroach and other insects. The functions of antennal glands are also highlighted here.
Important Questions on Excretory Organs in Different Organisms
The enteronephric nephridia of earthworm are concerned with
Metanephridia is a type of primitive excretory organ which occurs in Platyhelminthes.
Internal opening is absent in metanephridia.
How can you differentiate between protonephridia and metanephridia.
_____ is an advanced type of excretory structure that occurs in Annelida.
Internal opening is absent in protonephridia.
Write any two difference between protonephridia and metanephridia.
Protonephridia is a type of primitive excretory organ which occurs in Platyhelminthes.
What are Protonephridia?
In rabbit and humans, the kidney is
Consider the following statements.
Flame cells are excretory structures in flatworms.
Green glands are excretory organs in annelids.
. Columns of Bertini are the conical projections of the renal pelvis into the renal medulla between the renal pyramids.
Excretory organs of cockroach are
_____ are excretory organs in spiders and scorpions.
Fill in the blank with the correct option provided in the bracket.
The kidney of a mammal resembles the _____ (plasma membrane/contractile vacuole/nephridia) of Amoeba in expelling out excess water.
Excretory system of Ascaris lumbricoides is made up of
The nephrostomes, in the kidneys, are functional in
Green glands are excretory in function which are found in
In ornithine cycle, which of following wastes are removed from the blood
Read the following (A – D) four statements:
(A) Some amount of urea may be retained in the kidney matrix of mammals to maintain a desired osmolarity.
(B) Protonephridia are excretory structures in rotifers
(C) In prawns, malpighian tubules help in the removal of nitrogenous wastes and osmoregulation.
(D) In human beings, kidneys are situated between the levels of last thoracic and third lumber vertebra close to the ventral inner wall of the abdominal cavity
How many of the above statements are correct?
Match the excretory organs listed under column I with the animals given under column II. Select the answer which gives the correct combination of alphabets of the two columns.
| Column I (Animals) |
Column II (Excretory organs) |
||
|---|---|---|---|
| A. | Nephridia | p. | Hydra |
| B. | Malpighian tubules | q. | Leech |
| C. | Protonephridia | r. | Shark |
| D. | Kidneys | s. | Roundworms |
| t. | Cockroach |
