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Question: 19 19 all of the following are true abeut choanoflagellates...

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19) 19) All of the following are true abeut choanoflagellates cxopt A) They are sessile as adults B) They live in aquatic habitats C) They are suspension feeders D) They reproduce sexually E) They are protists 20) 20) What do all animals have in common? A) They reproduce sexually B) They eat plants or other animals. C) They are multicellular. D) They move around E) They sense and respond to their environment 21) Which of the following characteristics would net facilitate a sessile lifestyle? 21) A) ability to secrete a poisonous coating C) internal fertilization B) asexual reproduction D) feeding on motile prey 22) In a habitat with only one abundant food source, which type of metamorphosis would you expect 22) an animal species to undergo? B) holometabolous metamorphosis A) 23) What is the function of the arthropod exoskeleton? 23) A) It provides protection and functions in locomotion. B) It has no well-established function Trilobites had an exoskeleton, and they went extinct) C) It makes growth by molting passible. D) Because hard parts fossilize more readily than do soft tissues, the presence of an exoskeleton has given arthropods a good fossil record 24) Suppose you were a researcher choosing a model organism with which to study animal genetics 24) Which of the following characteristics would you not look for in your modei organism? A) small size B) simple diet C) long life span D) abundant reproduction E) quick maturation 25) 25) What major feature or features distinguish most of the wormlike phyla of protostomes from each other? A) Their mouthparts and feeding methods vary Metamorphosis may be lacking incomplete, or complete. C) Their modes of locomotion differ-they burrow, swim, crawl, or walk D) They have a well-developed coelom and a tube-within-s-tube body plan. 26 26) The anterior region of the crustaceans is called the A) thorax B) cephalum cephalothorax D) head
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