Question

characteristics of kingdom porifera​

Answer 1

Characteristics of kingdom porifera:--

Step-by-step explanation:

(01)-- Porifera are commonly called sponges.

(02)-- These are multicellular organisms which are sedentary in nature.

(03)-- Most of them are marine while a few are fresh water forms.

(04)--Body is cylinderical, asymmetrical or has a radial symmetry.

(05)-- These are heterotrophic..

Answer 2

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Porifera Kingdom :

• Porifera have Pores or spongy body .
• These are non - motile animals which are found attached to substratum [Solid support] .
• The whole body has many pores which are called Ostia
• Porifera is a marine animal and hollow body .
• The body of these animals covered by an exoskeleton which made up of Calcium carbonate .
• Porifera have Cellular grade of body organisation .
• Body cavity is absent so it is Acoelomate .
• Example - Sycon , Spongilla etc

Now Know about some terms related to this kingdom :

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1] Bilateral symmetry : Bilateral symmetry means body divide into two equal parts  

2] Radical Symmetry : Radical symmetry means body divide into multiple equal parts  

Germ  layers :  

1] Diploblastic : Diploblastic means body formed from two germs layer .

2] Triploblastic : Triploblastic means body formed from three germs layer .

• Colemate : Colemate means Body cavity present in the body .
• Acolemate : Acolemate means body cavity absent in the body .  

Segmentation : A body which have segment called Segmentation  

Skelation :  

1] Exoskelation : Exoskelation means hard covering of calcium carbonate present which help to protection of body  

2] Endoskelation : Endoskelation means hard covering of Calcium present which help to also protection of body  

Chorodata : Chorodata means vertebral column present and Notochord also present  

Non- Chorodata : Non – Chorodata means Absent vertebral column and Notochord also absent