Which of the following is not a feature common to most animals?
- development into a fixed body plan
- asexual reproduction
- specialized tissues
- heterotrophic nutrient sourcing
Which of the following does not occur?
- radially symmetrical diploblast
- diploblastic eucoelomate
- protostomic coelomate
- bilaterally symmetrical deuterostome
The large central opening in the poriferan body is called the _____.
Cnidocytes are found in _____.
- phylum Porifera
- phylum Nemertea
- phylum Nematoda
- phylum Cnidaria
Cubozoans are ________.
Which group of flatworms are primarily external parasites of fish?
Crustaceans are _____.
A mantle and mantle cavity are present in _____.
- class Oligochaeta
- class Bivalvia
- class Polychaeta
- class Hirudinea
Annelids have a _____.
- a true coelom
- no coelom
- none of the above
Echinoderms in their larval state have _____.
- triangular symmetry
- radial symmetry
- hexagonal symmetry
- bilateral symmetry
The circulatory fluid in echinoderms is _____.
Which of the following is not a member of the phylum Chordata?
Members of Chondrichthyes differ from members of Osteichthyes by having a ________.
- bony skeleton
- cartilaginous skeleton
- two sets of paired fins
Squamata includes _____.
- crocodiles and alligators
- lizards and snakes
Sudoriferous glands produce ________.
Which of the following is a Monotreme?