The gymnosperms produce seeds that are enclosed within a fruit.
Answer the following statement true (T) or false (F)
False
Angiosperms, not gymnosperms, produce seeds that are enclosed within a fruit.
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Which of these time intervals, based on plant fossils, came last (most recently)?
A) extensive growth of gymnosperm forests B) Silurian-Devonian explosion with fossils of plant lineages that contain most of the major morphological innovations C) colonization of land by early liverworts and mosses D) rise and diversification of angiosperms E) carboniferous swamps with giant horsetails and lycophytes
The role of arroworms in the pelagic ecosystem is to:
a. filter feed on small plankton. b. link primary and higher consumers in the food chain. c. prevent grazers from population explosions. d. scavenge nutrition from dying animals. e. recycle nutrients from detritus.
Which of the following principles is NOT part of Darwin's theory of evolution by natural selection?
A. Evolution is a gradual process that occurs over long periods of time B. Variation occurs among individuals in a population C. Mutations are the ultimate source of genetic variation D. More individuals are born than will survive E. Individuals that possess the most favorable variations have the best chance of reproducing
Which elements are most often the limiting nutrients for plant growth?
A) nitrogen, potassium, phosphorus B) nitrogen, oxygen, hydrogen C) carbon, sodium, chlorine D) carbon, nitrogen, oxygen