hoose which is FALSE among the following statements about the anatomy of annelids. A. Earthworms have mouth, teeth, pharynx, crop, gizzard, intestines, and anus. B. Species of leeches have either jaws and teeth or proboscis as mechanisms for bloodsucking. C. Leeches have anterior and posterior suckers, being the later as used for attachment only. D. The cirri is for sensory, while the parapodia is for respiration and locomotion. E. Leeches have a fixed number of metameres of 33-34 Choose which is FALSE among the following statements about the reproduction of annelids. A. Fertilization in leeches is internal, while in the oligochaetes is external. B. The seminal receptacles of each earthworm receive the sperm during copulation. C. Clitellum is visible in leeches only during the reproductive period, while absent in the juvenile stage of earthworms. D. Cocoons are produced by the ovaries to house the developing eggs. E. Organisms of the clade Clitellata have no established asexual reproduction. Choose which is FALSE among the following statements about the physiology of annelids. A. Earthworms move via peristaltic movement because of their circular and longitudinal muscles working simultaneously. B. Hirudo medicinalis produce hirudin to inhibit the actions of clotting enzymes so blood-letting is possible. C. Respiration in annelids is cutaneous because of the absence of developed respiratory organs. D. Annelids have closed circulatory system, and complete digestive system. E. The two evolutionary body plans that are first observed in the annelids are the presence of true coelom and jointed appendages.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter15: Diversity Of Animals

Section: Chapter Questions

Problem 16RQ: Members of Chondrichthyes differ from members of Osteichthyes by having a _______. a. jaw b. bony...

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Choose which is FALSE among the following statements about the anatomy of annelids.

A. Earthworms have mouth, teeth, pharynx, crop, gizzard, intestines, and anus.

B. Species of leeches have either jaws and teeth or proboscis as mechanisms for bloodsucking.

C. Leeches have anterior and posterior suckers, being the later as used for attachment only.

D. The cirri is for sensory, while the parapodia is for respiration and locomotion.

E. Leeches have a fixed number of metameres of 33-34

Choose which is FALSE among the following statements about the reproduction of annelids.

A. Fertilization in leeches is internal, while in the oligochaetes is external.

B. The seminal receptacles of each earthworm receive the sperm during copulation.

C. Clitellum is visible in leeches only during the reproductive period, while absent in the juvenile stage of earthworms.

D. Cocoons are produced by the ovaries to house the developing eggs.

E. Organisms of the clade Clitellata have no established asexual reproduction.

Choose which is FALSE among the following statements about the physiology of annelids.

A. Earthworms move via peristaltic movement because of their circular and longitudinal muscles working simultaneously.

B. Hirudo medicinalis produce hirudin to inhibit the actions of clotting enzymes so blood-letting is possible.

C. Respiration in annelids is cutaneous because of the absence of developed respiratory organs.

D. Annelids have closed circulatory system, and complete digestive system.

E. The two evolutionary body plans that are first observed in the annelids are the presence of true coelom and jointed appendages.

Definition Definition Organ system that helps in the digestion of food by mechanical and biochemical processes. The digestive system breaks down food into simpler components that enable the body to then absorb or transport nutrients. The human digestive system includes the gastrointestinal tract or alimentary canal and the associate glands. The organs of the gastrointestinal tract include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The associated glands include salivary glands, liver, gallbladder, and pancreas.

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