Excretion in Animals


 
 
Concept Explanation
 

Excretion in Animals

Excretion in animals: Many unicellular organisms like Amoeba throw out their wastes by diffusion from their body surface. Protozoans have no organs for excretion. As they live in an aquatic habitat, their wastes are eliminated by diffusion through the plasma membrane.

  • In simple terms, excretion can be defined as the removal of those substances from the body of an organism which is no more useful to the organism or simply waste for the organism. Thus, it is a process that helps to remove the metabolic wastes out from the body of an organism.
  • .... (More Text Available, Login?)
    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    Which of the following statements about excretion is true?

    Right Option : D
    View Explanation
    Explanation
    Question : 2

    An advantage of excreting nitrogenous wastes in the from of uric acid is that _____________

    Right Option : A
    View Explanation
    Explanation
    Question : 3

    Which of the following are correct ?

    (a) Simple multicellular organisms like Hydra throw out solid waste matter through their mouth. .

    (b) The excretory organs of insects (e.g., grasshopper, cockroach and housefly) are tubular and are known as Malpighian tubules. 

     

    Right Option : C
    View Explanation
    Explanation
     
     


    Students / Parents Reviews [20]