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?
Explain how animals in Vertebrata are classified into further subgroups.
Write down four characteristics of Ctenophora and give two examples.
Write down four characters of Osteichtyes and give two examples.
What are differences between the following :
(a) Cartilaginous fishes and bony fishes ;
(b) Amphibia and Reptilia ;
(c) Aves and mammals.
Give one point of difference between notochord and nerve cord.
Distinguish between polyp and medusa.
Write down four general characters of cnidarians (coelenterates). Give two examples.
What are the group names of the following categories of animals?
Animals with three pairs of legs ___________
What are the group names of the following categories of animals?
Animals with feathers _________
Give any one difference between the following :
Insecta and Arachnida
Give any one difference between the following :
Flatworm and Roundworm
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Earthworm - Invertebrata, Annelida, Insecta
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Butterfly- Insecta, Invertebrata, Mollusca
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Bat - Aves, Mammalia, Chordata
Write the name of oviparous mammal.
Choose the correct answer: Which of the following is not a helminth parasite?
Assertion (A): Reptiles are warm-blooded animals.
Reason (R): They have scales.
