Organisms in which a circulating body fluid is distinct from the fluid that dire
ID: 180416 • Letter: O
Question
Organisms in which a circulating body fluid is distinct from the fluid that directly surrounds the body's cells are likely to have: An open circulatory system A closed circulatory system A gastrovascular cavity Gills Booklungs What is the main force by which most of the water within xylem vessel moves toward the top of a tree? Active transport of ions into the stele. Atmospheric pressure on roots. Evaporation of water through stoma. The force of root pressure. Osmosis in the root. Which of the following is NOT a characteristic of all fish? Two-chambered heart. Aquatic life Presence of jaws. Skin with scales. Gills as respiratory organs. Which of these is an adaptation to a terrestrial way of life in the snail? Using the mantle instead of gills for respiration. Cephalization with antennae and eyes. Hatcher foot for ceawing. Torsion so that anus is above the head. Which of the following is NOT true about protostomes? They are types of advanced invertebrates. The blastopore during embryonic development become the anus. They will become mollusks. annelids, and arthropods They form true coelom. Thwe mesoderm splits in order to from the coelom. A compound eye is found in Mollusks. Arthropods Annelids. Flatworms. Roundworms.Explanation / Answer
72. B. A closed circulatory system.
A closed circulatory system is a system in which the circulating fluid never leaves the ciruculation. The exchange of nutrients and gasses occur at the capillary network or the capillary junctions where the incoming vessels meet the outgoing vessels. The fluid in the vessels is of different compositing from that of the fluid that bathes the cells. The example is vertebrate blood which is in a closed circulation and the lymph that surrounds the cells.
73. C. Evaporation of water through stoma. Evaporation of water cause a capillary action of pulling the water molecules up. Due to the cohesive forces of water, water forms a continuous film from roots to the leaf tip.
74. D. Skin with scales. Many fish have skin without scales.
75. C. Hatcher foot for crawling. Snails use powerful muscular foot for crawling. They secrete a slime upon which they glide using their muscular foot. This reduces friction and injury to the foot.
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