Question

Describe and compare the relationship between protozoa and porifera.

Answer 1

Answer:

Relationshsip between Protozoa and Porifera:

Explanation:

Protozoa and Porifera are two different types of the phylum

Protozoa:

The name “Protozoa” was coined by Goldfuss (1817). The branch of their study is called Protozoology.

Salient features:

Protozoans are simple and primitive organisms. They are unicellular (acellular). The symmetry of phylum protozoa is either asymmetrical or radially symmetrical or bilaterally symmetrical. The locomotion is through flagella, cilia or pseudopodia. The digestion is mostly intracellular and excretion & respiration takes place through the process diffusion. In protozoans, reproduction occurs by both asexual and sexual methods.

Porifera:

Porifera is a phylum consisting of aquatic invertebrate animals that comprise the sponges. Their body wall has numerous minute pores, called ostia. Through these pores, a continuous current of outside water is drawn into the body.

Salient features:

All the sponges are Aquatic, Sedentary, Asymmetrical or Radially asymmetrical. The ostia open into a large cavity called spongocoel. The excretion & respiration takes place through the process diffusion. In this phylum also, reproduction occurs by both asexual and sexual methods. They have greater power of regeneration.

Answer 2

Protozoa and Porifera are two different types of phylum :

Protozoa:

• It represents single celled eukaryote belong to subdivision of kingdom Protista.

• They are found as parasitic form or free living form.  

• They engulf organic matter which includes microorganism or 'organic tissues' and 'debris'.

• The movement is via flagella, cilia and pseudopodia.

Porifera:

• They are simple aquatic invertebrates called as sponges belong to phylum type.

• It includes the group like glass sponges, demo sponges and calcareous sponges.  

• They are found in marine environment with about hundred species of fresh water sponges.

• Their body has a 'numerous minute pores' called Ostia, through which continues current of 'outside' water is 'drawn' in to body.