Advertisements
Advertisements
प्रश्न
Write down four general characters of Porifera.
Advertisements
उत्तर
(i) These are the simplest multicellular, diploblastic animals.
(ii) They are asymmetrical or radially symmetrical.
(iii) Their cells are loosely held together in a gelatinous matrix, mesoglea and do not form tissues.
(iv) Skeleton is made up of minute calcareous or silicious spicules or spongin fibre (collagen) or both.
APPEARS IN
संबंधित प्रश्न
What are the differences between animals belonging to the Aves group and those in the mammalia group?
What is difference between bilateral symmetry and radial symmetry?
What do you mean by the term coelomate animals?
What are adaptations in fishes due to which they are aquatic?
Write down four characters of Chondrichtyes.
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
What are the group names of the following categories of animals?
Animals with a backbone _____________
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
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 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 the name of two animals that belong to phylum echinodermata.
Name any two animals which possess compound eyes.
Fill in the blanks:
Dog fish belongs to phylum ______.
Choose the correct answer: The animal of phylum mollusca is
Choose the correct answer: Protista is the link between
Carolus Linnaeus is known as the Father of ______.
Assertion (A): Reptiles are warm-blooded animals.
Reason (R): They have scales.
Bilaterally symmetrical and acoelomate animal are exemplified by:
