A common adaptation of coastal plants that grow on sand dunes is
A. deep roots to extract moisture.
B. broad leaves for enhanced photosynthesis.
C. secretion of proteinaceous threads.
D. increased transpiration of water.
E. elevated growth rates.
A. deep roots to extract moisture.
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Which of the following statements concerning animal taxonomy is (are) true?
1. Animals are more closely related to plants than to fungi. 2. All animal clades based on body plan have been found to be incorrect. 3. Kingdom Animalia is monophyletic. 4. Animals only reproduce sexually. 5. Animals are thought to have evolved from flagellated protists similar to modern choanoflagellates. A) 5 only B) 1 and 2 C) 3 and 5 D) 3, 4, and 5 E) 2 and 4
The coefficient of relatedness of a human child to its full sibling is, on average,
A. 0.25. B. 0.5. C. 0.75. D. 1. E. 1.5.
Which of the following has a role in sediment consolidation similar to that of mangroves?
a. red algae. b. seagrasses. c. green algae. d. rockweed. e. giant kelp.
Which structure acts as a "release valve" for the force of the pressure waves entering the cochlea?
a. the round window b. the oval window c. the Eustachian tube d. the organ of Corti e. the tectorial membrane