--%>

Characteristics of protozoans

What are the various characteristics of protozoans which make them look like animals?

E

Expert

Verified

Protozoans are unicellular beings with certain identical characteristics to animal cells.

In comparison to pluricellular organisms protozoans are much proximal to the animal kingdom than to plants: they are heterotrophs, they contain a rudimentary locomotion system (that is, amoeboid movements, flagella and cilia), they do not contain cell wall, certain species present structures which resemble structures of a primitive digestive system, with cytostome (or mouth) and cytopyge (or anus), specialized in excretion and digestion.

The evolutionary hypothesis which animal cells encompass come from the differentiation of protozoans is strong.

   Related Questions in Biology

  • Q : Factors Influencing Time or Cost

    Factors Influencing Time or Cost Estimation: The planning horizon Project duration Skills and competencies of people in the organization The way the project is structured and designed The amount o

  • Q : Traits Approach of Leadership Traits

    Traits Approach It is a traditional approach to the theory of leadership. According to this theory, it is though that a leader has specific trait of mind and intelli

  • Q : Auxin concentration in structures of

    What takes place when auxin concentration in some structures of plant is over the action range of hormone?

  • Q : Horizontal | Lateral Communication -

    This type of communication refers to communication between various departments or units representing the same level, or people within the same or different departments, without having a superior-subordinate relationship. It flow between persons at the same hierarchical level. The main object of t

  • Q : Phases of menstrual cycle Explain the

    Explain the phases of menstrual cycle?

  • Q : What is Revenue Growth Revenue Growth :

    Revenue Growth: It illustrates sales decreases or increases over time. This is used to measure how quick a business is expanding. Additionally valuable than a snapshot of revenue, revenue growth assists investors identify trends so as to gauge revenue

  • Q : How potassium-sodium maintain resting

    How potassium and sodium and ions maintain the resting potential of neuron?

  • Q : Data for manufacture or DFM guidelines

    Various DFM guidelines are: 1. Minimize the parts count. (For example, use integral clips for joining rather than separate nuts and bolts.) 2. Build components as similar as possible; this decreases the

  • Q : Constituents of cell membrane What are

    What are the fundamental constituents of cell membrane?

  • Q : Define Human Resources Generalist Human

    Human Resources Generalist: The Generalist manages the day-to-day operations of Human Resource office. The HR Generalist administers the administration of the human resources policies, processes and programs. The HR Generalist carries out responsibili