Defend the following statement: Vascular tissue was, arguably, the most important evolutionary step, making possible the kinds of plant life we see today
What will be an ideal response?
Vascular tissue did more than just increase efficiency in transporting material around a plant. The transporting tubes are bundled together to provide support and allow plants to grow taller as well as wider.
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Fat digestion yields fatty acids and glycerol, whereas protein digestion yields amino acids; both digestive processes _____
A) are catalyzed by the same enzyme B) are intracellular processes in all organisms C) use water molecules when breaking bonds (hydrolysis) D) require the presence of hydrochloric acid to lower the pH E) require adenosine triphosphate (ATP) as an energy source
Fish and crustaceans are similar in that both use _____________ for gas exchange.
A. tracheal tubes B. gills C. the walls of the mantle cavity D. the moist surface of their skin E. lungs
Which of the following is not a component of the demography of a population?
1.size and density 2.distribution pattern 3.age structure 4.all are demographic characteristics
Which of the following is NOT a correct statement about food chains?
a. the food-chain concept is helpful in thinking about community interactions, but is probably an oversimplification of the actual interactions b. food webs show the relationships among multiple food chains c. food webs are b better than food chains for showing the position of omnivores within the community d. food chains are often complex and intertwined e. all of the above are correct statements about food chains