The most common spatial distribution among individuals within a population is clumped
Indicate whether the statement is true or false
TRUE
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The plant hormone ____ appears to play a major role in gravitropism in roots and shoots
a. salicylic acid b. gibberellin c. abscisic acid d. auxin e. oligosaccharin
A seed does NOT include
a. endosperm. b. seed coats. c. cotyledons. d. pollen grains. e. embryo.
In many parts of the Everglades in Florida, excessive irrigation is lowering water levels and allowing salt water to enter the freshwater swamps. Why is this a problem for plants that have adapted to life in these swamps?
A. Photosynthesis is inhibited by salt. B. The plant roots cannot take up water if the soil salt concentration is high. C. The salt competes with minerals for uptake by the plants, limiting their growth. D. The plants cannot move sugars down the xylem if there is salt outside of the roots pulling water out. E. Salts bind to nitrogen, preventing it from being taken up.
Which is an example of clones that already are produced by nature?
A) two plants of the same species B) golden corn C) fraternal twins D) identical twins