blab1108 e... -Saved Insert Draw Design Layout References Mailings Review View H
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blab1108 e... -Saved Insert Draw Design Layout References Mailings Review View Help Foxit PDF Tell me File Home New Roman AaBbCcDc AaBbCcD AaBbC 1 Normal No Spac.. Heading Styles Paste Editing Clipboar Font Paragraph animal. As the animal develops, the first embryological opening becomes the anus. To which phylum might this animal belong? 96 A) Mollusca B) Arthropoda C) Echinodermata D) This animal could be a mollusc or an arthropod. 28) What directly causes the extension of tube feet? ater B) HemolymphC) Blood D) Muscle 29) Which is commonly found in connective tissue? A) Collagen B) Iron C) Acetylcholine 30) Which visual stimulus is most likely to cause a reaction in horseshoe crabs? 30) A) Other horseshoe crabs C) Humans B) Light D) Prey 31) How is the amphibian life cycle still tied to water? A) Amphibians can only breathe in water B) Amphibian eggs must be laid in a moist environment. C) Amphibian skin must stay moist. D) Amphibian eggs must be laid in a moist environment and amphibian skin must stay moist. 32) Why are squamous cells suited for allowing passive movement of molecules? 32) A) They povide a minimal barrier B) They have carrier molecules to move substances from low to high concentration. C) They are more full than other cells. D) All of the choices are correct. 33) What is the difference between simple and compound eyes? A) Compound eyes resolve images. C) Compound eyes have many lenses. B) Simple eyes only sense light. D) All of the choices are correct. 34) In which class is Aristotle's Lantern present? A) Echinoidea B) Asteroidea C) Crinoidea D) Ophiuroidea 35) What is the function of the ciliated cells that line the respiratory tract? A) These cells facilitate the movement of mucus. B) These cells pass oxygen into the blood. C) Gas exchange can occur on these cells. D) All of the choices are correct. 36) Keeping in mind that a crayfish is saltier than the fresh water it occupies, and remembering the idea of osmosis, note that the antennal gland deals directly with the consequences of this issue. What do you suppose the function of the antennal gland is? A) To take on extra water C) To eliminate salt B) To take on salt D) To remove extra water 37) What do striations represent? A) Cell walls C) Cell membranes B) Intercalated discs D) Bundles of contractile filaments Page 3 of 6 1883 words - + 100% 1:11 AM 3/10/2018Explanation / Answer
28. Ans- A. water
Water vascular system consists of channels that connect numerous tube feet. It is used by sea stars and sea urchins for locomotion, food and waste transportation, and respiration.
29. Ans- A. collagen
In connective tissue commonly found fiber include collagen, elastic, and reticular.
30. Ans- B.light
The horseshoe crab is a 'living fossil that composed of three parts such as the head region or 'prosoma, the abdominal region or 'opisthosoma' and the spine-like tail or 'telson'. Optic nerve fibers discharge impulse with increased light intensity.
31. Ans- C. amphibian skin must stay moist
Amphibian can live both in water and on land. They lay eggs in water and have moist, scaleless skin that can help in absorbing water and oxygen. Without moist conditions, the skin becomes dry and they die.
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