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12. The Lophotrochozoa are made up of the: a. protostomes and deuterostomes. b.

ID: 191804 • Letter: 1

Question

12. The Lophotrochozoa are made up of the: a. protostomes and deuterostomes. b. annelids and molluscs. c. echinoderms and arthropods. d. cnidarians and ctenophores. e. insects and spiders. 13. Animals that are "cephalized" also: a. have no true tissues and are triploblastic. b. possess a nerve net and are diploblastic. c. are acoelomate and diploblastic. d. are bilaterally symmetric and triploblastic. 14. The term "tagmata" refers to: a. the space between the body wall and internal organs of many animals. b. the body regions of a typical arthropod. c. the feeding structure of a lophotrochozoan. d. the feeding structure of most molluscs. 15. Basiomycete mushrooms have long filaments underground known as hyphae, which gather nutrients and which are typically either: a. heterokaryotic or diploid. b. diploid or haploid. c. sporophytes or gametophytes. d. heterokaryotic or haploid. e. spores or gametes.

Explanation / Answer

Que 12.

Ans:

The Lophotrochozoa are made up of the: b. annelids and molluscs.

Explanation:

- The Lophotrochozoa are protostomes possessing a blastospore, an early form of mouth.

- The annelid worms and molluscs are two large phyla in Lophotrochozoa group.

- Hence, correct option is: b.