What is the body plan of a porifera?

What is the body plan of a porifera?

The most simplistic body plan within the phylum porifera is the asconoid body plan. This is such a simplistic structure because the body plan has only one large internal chamber, called a spongocoel, that is lined with water-filtering choanocyte cells.

What body plan do sponges have?

The most basic body plan is called asconoid. In asconoid sponges the two major cell layers surround a fluid-filled cavity called the spongocoel, the large central cavity of sponges .

What are the 3 body plans of sponges?

There are three different body plans found among sponges: asconoid, synconoid, and leuconoid. Sponge feeding is critically dependent on several specialized cells within the organism including the following: choanocytes, amoebocytes, and porocytes.

How does the members of phylum porifera maintain their body functions?

Since water is vital to sponges for excretion, feeding, and gas exchange, their body structure facilitates the movement of water through the sponge. Structures such as canals, chambers, and cavities enable water to move through the sponge to nearly all body cells.

Which sponge body plan is the most efficient?

Leuconoid sponges are the best adapted to increase sponge size. This body plan provides more circulation to deliver more oxygen and nutrients per area in large sponges.

What is blind sac plan?

The blind sac body plan is the body plan where the there is a single opening of the digestive system. The tube-like digestive system starts with a single opening through which the food is taken inside and the digested food is expelled through the same opening.

What shows have blind sac body plan?

(c) Blind sac body plan is found in coelenterates and flat worms. In this type of body plan animals has a single opening that act as both mouth and anus.

Why is the body structure of the phylum Porifera important?

Identify the common characteristics of phylum Porifera. Since water is vital to sponges for excretion, feeding, and gas exchange, their body structure facilitates the movement of water through the sponge. Structures such as canals, chambers, and cavities enable water to move through the sponge to nearly all body cells.

How many species of Porifera are there in the world?

The Porifera are sponges. They are primarily marine animals. There are nine thousand species of sponges. There are following characteristics of the phylum Porifera: Their bodies consist of loosely organized cells.

Why are Ostia important in the body of poriferans?

Primarily, their body consists of a thin sheet of cells over a frame (skeleton). As their name suggests, Poriferans are characterized by the presence of minute pores called ostia on their body. Since water is vital to sponges for excretion, feeding, and gas exchange, their body structure facilitates the movement of water through the sponge.

What kind of animal has an asymmetrical body plan?

Only sponges (phylum Porifera) have asymmetrical body plans. Some animals start life with one type of body symmetry, but develop a different type as adults; for example, sea stars are classified as bilaterally symmetrical even though their adult forms are radially symmetrical.