Advertisements
Advertisements
Question
Write down four general characters of phylum Echinodermata. Give two examples.
Advertisements
Solution
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
RELATED QUESTIONS
Explain how animals in Vertebrata are classified into further subgroups.
Write one difference between the following pair:
Invertebrates and Vertebrates
Match the animals given under column A with their respective classification group given under column B
| Column A | Column B | ||
| 1 | Sponge | a | Amphibia |
| 2 | Snail | b | Reptilia |
| 3 | Butterfly | c | Echinodermata |
| 4 | Toad | d | Mollusca |
| 5 | Lizard | e | Arthropoda |
| 6 | Starfish | f | Porifera |
Write down four characters of Osteichtyes and give two examples.
Describe some flight adaptations of the birds.
Write down four general characters of cnidarians (coelenterates). Give two examples.
Describe the important characters of mammals and birds. Give two examples of each.
The animals (Kingdom Animalia) are mainly grouped under two categories
What are the group names of the following categories of animals?
Animals with a hairy skin ___________
What are the group names of the following categories of animals?
Animals with three pairs of legs ___________
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
Write down a flow chart showing subdivisions of kingdom Animalia.
Write the name of oviparous mammal.
Give two examples of each of the following: Pisces
Fill in the blanks:
Ascaris is the example of phylum ______.
Choose the correct answer: Protista is the link between
Assertion: Binomial name is the universal name and contains two names.
Reason: It was first introduced by Carolus Linnaeus
Assertion (A): Reptiles are warm-blooded animals.
Reason (R): They have scales.
