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Introduction:
Protozoans are members of phylum protista. Phylum protist consists of a variety of single-celled and multi-celled organisms. Flagellated protozoan heterotrophic protists which may have one or more that one flagellum.
Answer to Problem 1SQ
Correct answer:
All flagellated protozoans live as single cells. Hence, the correct answer is option c.
Explanation of Solution
Reason for correct answer:
Option c. is given as “live as single cells.”
Mostly flagellated protozoans are single-celled. These are heterotrophic organisms. They intake food by the process of phagocytosis. The shape of the flagellated protozoans is maintained by pellicle. Examples of flagellated protozoan are diplomonads and parabasalids.
Reason for incorrect answer:
Option a. is given as “lack mitochondria.”
Mitochondria are the organelle that helps in producing ATP (adenosine triphosphate) in the body. ATP is an essential source of energy. Flagellated protozoans have mitochondria. Hence, option a. is incorrect.
Option b. is given as “are photosynthetic.”
Flagellated protozoans are not photosynthetic. The photosynthetic protozoans are algae. Such as Euglena. Hence, option b. is incorrect.
Option d. is given as, “cause disease.”
Some of the flagellated protozoans cause disease. Such as Trichomonas vaginalis. The entire protozoans are not
Hence, the options a, b, and d are incorrect.
The flagellated protozoans can live as single-celled organisms. Thus, the correct option is c.
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Chapter 20 Solutions
Biology: Concepts and Applications (MindTap Course List)
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Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College