12 Questions
What is the characteristic that distinguishes animals from other organisms?
Being eukaryotic and multicellular
What is the name of the germ layer that gives rise to the central nervous system?
Ectoderm
What is the term for the development of a head in animals?
Cephalization
What is the name of the phylum that includes sponges?
Porifera
What is the term for a true fluid body cavity derived from mesoderm?
Coelom
What is the main characteristic of animals that distinguishes them from plants?
Heterotrophy
What is the main characteristic of the body form of jellyfishes and corals?
Radial symmetry
Which phylum is characterized by the presence of a true body cavity?
Annelida
What is the function of nematocysts in jellyfishes?
Stinging cells
Which phylum is characterized by the presence of pseudocoelomates?
Nematoda
What is the function of parapodia in polychaetes?
Locomotion
What is the function of hirudin secreted by leeches?
Prevents blood coagulation
Learn about the characteristics of animals, including their cell structure, movement, and body forms. Discover the differences between invertebrates and vertebrates, and how they develop. Explore the concept of symmetry and the layers of tissue in animals.
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