Answer to Question #224007 in Zoology for Debbie

Question

Make short notes to distinguish the characteristics of the various protozoan groups in the 

specimens given

Answer 1

Sarcodines characteristic

·        Sarcodines are distinguished by their trailing, long cytoplasm and their use of special cytoplasmic feet known as pseudopodia to facilitate movement.

 

·        Sarcodina nutrition is heterotrophic and holozoic.

 

·        Sarcodines reproduce asexually through binary fission or multiple fission.

 

·        Some exhibit sexual reproduction through syngamy.

 

·        Sarcodines can be mononucleate or multinucleate.

 

Mastigophora Characteristics

 

·        They have a whip-like flagella (one or more flagella) that they use to move.

 

·        The cytoplasm of these organisms is devoid of chloroplasts.

 

·        The majority of dinospores have an outer armor made of cellulosic plates.

 

·        Some species have colored pigments in place of chlorophyll (some of these pigments are neurotoxic)

 

·        Kinetoplastids have additional nuclear DNA (Kinetoplastids)

 

The phylum Ciliophora has the following characteristics:

 

·        Ciliates are found in both freshwater and saltwater environments.

 

·        A few ciliates have symbiotic relationships.

 

·        They move by using cilia. Ciliaire is also used to generate feeding currents in water.

 

·        They have a tough pellicle. It maintains their fixed shapes.

 

·        They have a distinct cytostome (mouth).

 

• Sixth, they have demographic nuclei, which include a larger macronucleus and one or more smaller micronuclei.

 

Sporozoans are characterized by

 

·        They are single-celled organisms.

 

·        They are immobile.

 

·        They are parasitic in nature.

 

·        They produce spores.

 

·        In their life cycle, the majority of them alternate between sexual and asexual stages.