Advertisements
Advertisements
प्रश्न
Write down four main characters of Annelida.
Advertisements
उत्तर
Main characteristics of Annelida:
(i) They are triploblastic, bilaterally symmetrical, coelomate, soft and elongated animals.
(ii) Their body is metamerically segmented externally by transverse grooves and internally by septa.
(iii) They have a tube-like alimentary canal, which is complete and extends straight from mouth to anus.
(iv) Reproduction is sexual. Sexes may be separate or united (hermaphrodite).
Examples: Sea mouse, earthworm etc.
APPEARS IN
संबंधित प्रश्न
How do poriferan animals differ from coelenterate animals?
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 characteristics of Ctenophora and give two examples.
Name the phylum in which ambulacral system is present. What is its function?
What are differences between the following :
(a) Cartilaginous fishes and bony fishes ;
(b) Amphibia and Reptilia ;
(c) Aves and mammals.
Distinguish between Nonchordata and Chordata.
Explain general characteristics of phylum Platyhelminthes and Nematoda. Give two examples of each.
Explain the general charaters of phylum Mollusca. Give one example of following classes of Mollusca;
(i) Gastropoda;
(ii) Pelecypoda;
(iii) Cephalopoda.
Describe the important characters of mammals and birds. Give two examples of each.
Why are scientific names of living beings considered better than their common names?
What are the group names of the following categories of animals?
Animals with feathers _________
Give any one difference between the following :
Flatworm and Roundworm
Name three animals (belonging to different classes) which breathe by means of lungs but have no external ears (pinnae).
Give two examples of each of the following: Annelida
Give two examples of each of the following: Arthropoda
Fill in the blanks:
Bath sponge belongs to phylum ______.
Choose the correct answer: Multicellular producers are
What is binomial nomenclature?
