Monocot vascular bundles do not have a vascular cambium between the xylem and phloem. This means that monocots _____

A) are much less efficient at conducting water and sugars
B) have very thin stems
C) do not produce wood in annual rings
D) cannot produce lateral shoots


C

Biology & Microbiology

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Osmosis is the diffusion of water across a membrane in response to the concentration of one or more of the ______. 

A. solutes B. membranes C. compartments D. cells

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The "tunic" of tunicate refers to:

a. a body covering b. the type of food-gathering mechanism c. muscle arrangements in the larva d. the immature stage of a true fish e. the protective cover of the brain

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The evolutionary history of groups of organisms is known as:

a. sympatry. b. polyploidy. c. ontogeny. d. phylogeny. e. monophyly.

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Primary succession takes much longer than secondary succession because it involves

A. more time for development of a seed bank. B. colonization by more K-selected species. C. colonization by organisms that are farther away. D. time for development of the soil. E. redevelopment of the atmospheric gases.

Biology & Microbiology