The cohesion-tension theory explains the role of ________ in long-distance water transport.
A. surface tension
B. sap movement
C. transpiration
D. membranes
E. plasmodesmata
Answer: C
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Sponges belong to the phylum:
a. Porifera. b. Cnidaria. c. Platyhelminthes. d. Nematoda. e. Tubularia.
In 1999, researchers found that they could create hybrid embryos between two species of sea urchin that had been separated for 10 million years. By treating eggs to remove the jelly coat, the sperm of the other species was able to fertilize. What step of the fertilization process is normally blocked, preventing hybridization between these species?
A. Sperm penetration B. Membrane fusion C. Egg activation D. Nuclear fusion Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about fertilization? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Exocrine glands:a
have products that are transported via the circulatory system. b. lack ducts. c. include goblet cells and milk glands. d. release hormones. e. lack epithelial tissue
How do the flowers of wind-pollinated plants differ from those of insect-pollinated plants?
What will be an ideal response?