1. Match the following: Ctenophora Nematoda Porifera Platyhelmin Cnidaria a. Com
ID: 265747 • Letter: 1
Question
1. Match the following: Ctenophora Nematoda Porifera Platyhelmin Cnidaria
a. Comb jellies; propel themselves by means of eight comb-like plates of fused cilia
b. Sponges; lack tissue organization
c. Radially symmetrical polyps and medusae
d. Bilaterally symmetrical acoelomates
e. Pseudocoelomate worms with a gut tube open at both ends
2. Which of the following is NOT a characteristic of the phylum Nemotoda?
e. Many are parasitic
3. A distinctive feature of polychaete worms, the parapodia, are used for all of the following except
slow crawling
4. A neighbor knows that you are enrolled in a biology course and asks you why so many earthworms appear on her lawn after a heavy rain. Your correct explanation is
d. Earthworms need oxygen for their cellular respiration; oxygen diffuses through their skin and if their burrows are full of water they cannot diffuse any oxygen.
5. Arthropods undergo ecdysis, which is characterized by
d. all of the above
6. A friend asks you why sea anemones are not placed in the Phylum Echinodermata. She says,“ Sea anemones have radial symmetry, so they must be sea stars.” “Of course you are correct about the radial symmetry in both groups of organisms,” you reply. Select the best choice for the rest of your response. “However,
sea stars are mobile whereas sea anemones are mostly sessile.
7. One of the most critical adaptations of the reptiles in relation to their life on land is the development of
a vertebral column
a. Have longitudinal muscles and move in a whip-like fashionExplanation / Answer
1.
A. Comb jellies; propel themselves by means of eight comb-like plates of fused cilia = Ctenophora.
B.Sponges; lack tissue organization = Porifera.
C.Radially symmetrical polyps and medusae = Cnidaria.
D.Bilaterally symmetrical acoelomates = Platyhelminth.
E. Pseudocoelomate worms with a gut tube open at both ends = Neamtoda.
2. B. May have a stylet.
3. D. Serving as gonads.
Parapodia are bristle bearing appendages used for locomotion, respiration or for sensation but not for reproduction. They do not serve as gonads.
4. D. Earthworms need oxygen for their cellular respiration; oxygen diffuses through their skin and if their burrows are full of water they cannot diffuse any oxygen.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.