In addition to underground roots, cycads produce about ground corraloid roots that resemble branching coral. These roots harbor
a. weevils
b. green algae
c. ovules
d. cyanobacteria
e. endophytic fungi
Ans: d. cyanobacteria
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Leaching is caused by
a. bacterial action. b. wind. c. water. d. microbial activity. e. none of these.
Cell–cell communication in plants takes place via specialized structures called
A) plasmodesmata. B) chloroplast outer membrane pores. C) gap junctions. D) lipid rafts. E) connexons.
The differences between males and females of a species are called ________
A) sexual morphism B) male/female dimorphism C) sexual differentiation D) sexual dimorphism
Kudzu is a plant native to southeastern Asia that is affecting biodiversity across the southeastern United States. Because of its large leaves and attractive flowers, it was first used as an ornamental houseplant. Later it was planted in large fields to prevent erosion. It grows very quickly and is difficult to control. Which statement best describes the impact Kudzu is having on the ecosystem?
A) Kudzu is outcompeting native plants for space and sunlight, causing a decline in biodiversity. B) Kudzu's broad leaves protect native plants, causing an increase in biodiversity. C) By preventing erosion, Kudzu allows more plants to grow, maintaining biodiversity. D) Kudzu is able to reproduce with native plants, creating hybrids. This increases biodiversity