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 do annelid animals differ from arthropods?
What are the differences between animals belonging to the Aves group and those in the mammalia group?
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
Write one difference between the following pair:
Invertebrates and Vertebrates
What is difference between bilateral symmetry and radial symmetry?
Write down four characteristics of Ctenophora and give two examples.
Write short note on protochordates.
Write down four general characters of Porifera. Give two examples.
Name major phyla of Animal kingdom. Write down one character and one example of each of them.
The animals (Kingdom Animalia) are mainly grouped under two categories
Rewrite the following scientific names correctly.
ficus religiosa (peepal), zea Mays (maize) and Bombyx Mori (silk moth).
Write two main characters of the following animal and name the phylum it belongs to: Whale
Write two main characters of the following animal and name the phylum it belongs to: Jelly fish
Give two examples of each of the following: Annelida
Choose the correct answer: 'Systema naturae' has been written by
______ in 1623, introduced the binomial nomenclature.
True (or) False. If false write the correct answer.
True nucleus is seen in prokaryotic cell.
Give scientific reasons.
Body temperature is not constant in amphibians.
Consider the following statements:
- Annelids are true coelomates
- Poriferans are pseudocoelomates
- Aschelminthes are acoelomates
- Platyhelminthes are pseudocoelomates
Choose the correct answer from the options given below:
