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Questions and Answers
What is the term for when cells are arranged as loose cell aggregates?
What is the term for when cells are arranged as loose cell aggregates?
- Cell level of organization (correct)
- Organ level of organization
- System level of organization
- Tissue level of organization
Which of the following is considered a fundamental feature used in animal classification?
Which of the following is considered a fundamental feature used in animal classification?
- Hair color
- Habitat
- Body symmetry (correct)
- Dietary preference
Which level of organization is present in coelenterates?
Which level of organization is present in coelenterates?
- Organ level
- System level
- Tissue level (correct)
- Cell level
What is a key characteristic of all members of Animalia?
What is a key characteristic of all members of Animalia?
In organisms with organ level organization, what is the arrangement of tissues?
In organisms with organ level organization, what is the arrangement of tissues?
Which animals exhibit organ level organization?
Which animals exhibit organ level organization?
What is one of the main reasons for classifying newly described species?
What is one of the main reasons for classifying newly described species?
Which of these features is used as the basis of animal classification?
Which of these features is used as the basis of animal classification?
What term describes the division of activities that occur among cells?
What term describes the division of activities that occur among cells?
In complex animals like Annelids, Arthropods, and Molluscs, tissues are grouped to form what?
In complex animals like Annelids, Arthropods, and Molluscs, tissues are grouped to form what?
Flashcards
Basis of Animal Classification
Basis of Animal Classification
Fundamental features common to various individuals, including cell arrangement, body symmetry, coelom nature, and system patterns.
Cellular Level Organisation
Cellular Level Organisation
Cells arranged as loose aggregates with some division of labor.
Tissue Level Organisation
Tissue Level Organisation
Cells performing the same function are arranged into tissues
Organ Level Organisation
Organ Level Organisation
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Study Notes
Basis of Classification
- Despite differences in structure and form among animals, fundamental features are common to individuals
- Common features relate to cell arrangement, body symmetry, coelom nature, and digestive, circulatory or reproductive system patterns
- These features serve as the foundation for animal classification
Levels of Organisation
- Animalia members are multicellular, but do not all share the same cell organization pattern
- Sponges have a cellular level of organization
- In sponges, cells are arranged as loose aggregates
- Division of labor (activities) occurs among the cells
- Coelenterates have cells arranged into tissues performing the same function
- Coelenterates exhibit a tissue level of organization
- Platyhelminthes exhibit an organ level of organization
- An organ level is when tissues group together to form specialized organs
- Annelids, Arthropods, and Molluscs are examples of animals with this level of organization
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