Advertisements
Advertisements
प्रश्न
Write down four general characters of phylum Echinodermata. Give two examples.
Advertisements
उत्तर
General characteristics of phylum Echinodermata:
(i) Their body is triploblastic, coelomate, unsegmented and radially symmetrical.
(ii) Digestive system is usually complete. Excretory organs are absent and anus is absent in class Ophiuroidea.
(iii) Body wall is covered with spiny hard calcareous plates that form a rigid or flexible endoskeleton.
(iv) Body cavity is organised into water vascular system, which moves respiratory and locomotary organs.
Examples: Antedon and sea urchin (Echinus)
APPEARS IN
संबंधित प्रश्न
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
Prepare a list of some animals that are found parasitic on human beings.
Define the term hermaphrodite. Give two examples.
Give four general characters of phylum Mollusca. Write down two examples.
Write down four characters of mammals. Give two examples.
Give an example each of Urochordata and Cephalochordata.
Distinguish between polyp and medusa.
Describe general characteristics of phylum Annelida. Give one example each class of Annelida.
Explain the general characters of phylum Arthropoda. Give one example of following classes
(i) Crustacea;
(ii) Myriapoda;
(iii) Insecta;
(iv) Arachnida.
What are the group names of the following categories of animals?
Animals with a backbone _____________
Match the names of animal groups in Column I with the names of animals in column II.
|
Column I (Group) |
Column II (Animals) |
|
Annelida |
Pigeon |
|
Porifera |
Snake |
|
Mollusca |
Earthworm |
|
Reptilia |
Sponge |
|
Amphibia |
Octopus |
|
Pisces |
Trout |
|
Mammal |
Rabbit |
Which names are left out that do not match and why?
Write name of any poikilothermic animal.
Give two examples of each of the following: Annelida
Fill in the blanks:
The excretory organs of platyhelminthes are ______.
Choose the correct answer: The animal of phylum protozoa is
Choose the correct answer: Whittaker is famous
True (or) False. If false write the correct answer.
True nucleus is seen in prokaryotic cell.
Bilaterally symmetrical and acoelomate animal are exemplified by:
