What are three examples of Porifera?

What are three examples of Porifera?

Give a few examples of Poriferans.

Sycon. Spongilla. Hylonema. Cliona.

Do sponges have a Blastula?

In most sponges for which developmental patterns are known, the fertilized egg develops into a blastula, which is released into the water (in some species, release takes place right after fertilization; in others, it is delayed and some development takes place within the parent).

What is an example of phylum Porifera?

Glass spongesCalcareous spongeDemospon…Venus’ flower basketStromatop…Plakinidae
Sponge/Lower classifications

Which are the larval stages of Porifera?

The common larval stages found in sponges are Amphiblastula (found in scypha) and parenchymula (found in leucosolenia).

Which is not an example of Porifera?

Detailed Solution. Adamsia is not an example of Porifera. Porifera are the animals that are generally marines and mostly asymmetrical animals. Adamsia belongs to the phylum Coelenterata which are marine free living animals with symmetrical body structure.

What are 3 characteristics of Porifera?

The interior space of the sponge body is called spongocoel. Characteristic skeleton consisting of either fine flexible spongin fibers, siliceous spicules, or calcareous spicules. Mouth absent, digestion intracellular. Excretory and respiratory organs are absent.

What is the larval stage of sponges?

Parenchymula is a sponge larva, which appears as a solid ball with exterior flagellated cells. It is a free-swimming larval stage. It is found in some Calcarea and many Demospongiae.

What is the common name of Porifera?

Poriferans are commonly referred to as sponges.

What are the 4 classes of phylum Porifera?

Sponges are classified within four classes: calcareous sponges (Calcarea), glass sponges (Hexactinellida), demosponges (Demospongiae), and the recently-recognized, encrusting sponges (Homoscleromorpha).

What is the name of larva of Porifera?

There are two general types of sponge larvae, solid parenchymella larvae and hollow amphiblastula larvae.

What is the larval stage of sponges called?

Is sycon a Porifera?

Sycon is a genus of calcareous sponges belonging to the family Sycettidae. These sponges are small, growing up to 7.5 cm and having length from 2.5 to7. 5, and are tube-shaped and often white to cream in colour.

Phylum: Porifera
Class: Calcarea
Order: Leucosolenida
Family: Sycettidae

What are the 6 general characteristics of all sponges?

General Characteristics of Sponges:

  • Body Form: Their body is porous, viz., provided with pores.
  • Symmetry: Most of the sponges are asymmetrical.
  • Germ Layers:
  • Level of Organization:
  • Body wall:
  • Canal System:
  • Skeleton (Fig.

What is Parenchymula and amphiblastula?

Parenchyma Larva:
Zygote undergoes holoblastic cleavage and develops into coeloblastula. It shows a hollow cavity covered by a single layer of cells. Many amoeboid cells enter the central cavity and it becomes parenchymuia larva (or) stereogastrula.

Who discovered Porifera?

– Robert Grant (1825) finally proved that sponges are animals, and coined the name ‘Porifera’ for these.

Which is known as bath sponge?

Euspongia commonly known as bath sponge is a commercially used sponge. It belongs to class Demospongiae of phylum Porifera. It is found throughout the Mediterranean sea. It is a hermaphroditic animal and can reproduce asexually by means of budding or through sexual reproduction.

What are 3 types of spicules in Porifera?


  • Calcareous spicules: The organic material in this type of spicules is calcium carbonate or calcite.
  • Siliceous spicules: The organics material in this type of spicules is Colloidal silica or Silicon.
  • Megascleres: These are larger spicules constituting main skeleton of sponge body.

What are the 5 types of insect larvae with example?

Selected types of larvae

Animal Name of larvae
Crustaceans General: nauplius, metanauplius, protozoea, antizoea, pseudozoea, zoea, postlarva, cypris, primary larva, mysis Decapoda: zoea Rhizocephala: kentrogon
Insecta: Lepidoptera (butterflies and moths) caterpillar
Insecta: Beetles grub
Insecta: Flies, Bees, Wasps maggot

Do sponges have larval stage?

Sponges that reproduce through vivipary have gametes fertilised inside their body, and larvae are incubated by the parent. Larvae swim or crawl away from their parent. They are apparently very short-lived, and there is no known larval stage that feeds in the plankton (unlike corals for example).

Is Euspongia a Porifera?

PHYLUM :- PORIFERA (Pore bearing, cellular grade, asymmetrical or radially symmetrical.) CLASS :- DEMOSPONGIAE (Spongin fibres or siliceous spicules. Canal system leuconoid type.) ORDER :- KERATOSA (Skeleton of spongin fibres only.)

Is Euspongia a bath sponge?

Euspongia is commonly known as a bath sponge. It belongs to the class Demospongiae under the Phylum Porifera of Animal kingdom. It is a hermaphroditic animal. It can reproduce asexually employing budding or fragmentation or through sexual reproduction.

What are 2 examples of sponges?

Different Sea Sponges

  • Porifera. A sponge has a skeleton-like network of “spicules” that maintain its structure.
  • Calcareous Sponges. Calcareous sponges are the most primitive sponges, and the only class of sponges that includes asconoid and synconoid varieties.
  • Glass Sponges.
  • Demospongiae.

Which is the example of amphiblastula larva?

development of sponges
, Oscarella), called an amphiblastula, is oval in shape and has a cavity in the middle; the front half of the larva consists of cylindrical, flagellated cells, the other half of round cells without flagella.

What is amphiblastula larva?

Amphiblastula larva is found in some of the sponges. It is a free-swimming larva with the front half having flagellated cells and the other half having cells without flagella.

What is the study of Porifera called?

So, the correct answer is ‘Parazoology’.

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