Overview of Animals quiz #4 Flashcards
Overview of Animals quiz #4
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Why is it necessary for arthropods to molt?
Arthropods need to molt to shed their exoskeleton and allow for growth. What animals have a pseudocoelom?
Nematodes have a pseudocoelom. Which of the following are characteristics of centipedes?
Centipedes have a segmented body, one pair of legs per segment, and are carnivorous. What feature is found in all mollusks?
All mollusks have a mantle. Which animal has a single-loop circulation?
Fish have a single-loop circulation. Which one of the following terms applies to the phylum Mollusca? A) Segmentation B) Radial symmetry C) Mantle D) Exoskeleton
C) Mantle Which organism is an herbivore?
Cows are herbivores. Which arthropod subgroup includes animals with six legs?
The arthropod subgroup that includes animals with six legs is Insecta. Which two groups of vertebrates are warm-blooded?
Birds and mammals are warm-blooded vertebrates. Which of these worms are segmented?
Annelids are segmented worms. Which of the following is a characteristic of jellyfish?
Jellyfish have radial symmetry and tentacles with nematocysts. What are the main differences between protostomes and deuterostomes in terms of embryonic development?
Protostomes develop the mouth from the blastopore, exhibit spiral and determinate cleavage, and are mostly invertebrates. Deuterostomes develop the anus from the blastopore, exhibit radial and indeterminate cleavage, and include vertebrates like humans. How do coelomates, pseudocoelomates, and acoelomates differ in terms of body cavity structure and embryonic origin?
Coelomates have a true coelom fully lined by mesoderm, pseudocoelomates have a body cavity partially lined by mesoderm and endoderm, and acoelomates lack a body cavity altogether.
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