Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 24, Problem 13SQ
Summary Introduction
Concept introduction: Invertebrates are animals that lack notochord. Invertebrates include a variety of organisms with varied characteristics. Annelids are a group of animals that are bilaterally symmetrical and exhibit metamerism (conspicuous segmentation). Mollusks are shelled animals that are majorly aquatic and few are terrestrial. Few mollusks lack shells. All mollusks are soft-bodied animals.
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Biology: The Unity and Diversity of Life (MindTap Course List)
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- Annelids and_______ have a closed circulatory system. a. insects c. flatworms b. cephalopods d. sea starsarrow_forwardYou find a worm and discover that it has no coelom, no nephridia and a mouth but no anus. What must be true of this animal? A. it is a xenacoelomorph B. it is s pseudocoelomate C. it is hermaphroditic D. it exhibits bilateral symmetry E. A, C and Darrow_forwardYou go plankton fishing and catch a trocophore larva. You take it home and it develops into some kind of segmented animal. You have caught ... A. an annelid B. a crustacean C. an echinoderm D. a molluscarrow_forward
- The closest living relatives of hagfishes are_____ . a. snakes c. lampreys b. sharks d. placodermsarrow_forwardAmong living animals, only birds have ________. a. a cloaca c. feathers b. a four-chambered heart d. amniote eggsarrow_forwardCrustaceans are _____. a. ecdysozoans b. nematodes c. arachnids d. parazoansarrow_forward
- The group of mammals that still lays eggs is referred to as a. Marsupials b. All lay eggs c. Placental Mammals d. Monotremesarrow_forward______include the only winged invertebrates. a. Cnidarians c. Insects b. Echinoderms d. Crustaceansarrow_forwardA major difference between birds and other reptiles is that birdsa. produce a shelled egg. d. care for their young.b. are ectotherms. e. have air sacs.c. are tetrapods.arrow_forward
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