Sexual dimorphism means that ____________________
a. males are always larger than females
b. females are always larger than males
c. there is a size difference between males and females
d. males tend to be more “showy” than females
C
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In land plants, which of the following transports food throughout the whole plant?
a. phloem b. spores c. xylem d. stomata
Which of the following is a benefit of a nematode’s cuticle?
a. protecting against predators b. promoting rapid growth c. ensuring efficient digestion d. maintaining a stable temperature
Which of the following makes pollination important?
a. It enables recognition of male and female flowers in plants. b. It enables the pollinator to feed. c. It enables fertilization and reproduction in plants, while the pollinator has no benefits. d. It enables fertilization and reproduction in plants, while the pollinator can feed.
On a hike along the desert slope of the Sierra Nevada Mountains in California, you notice that there is an abundance of pinyon pine and juniper trees. We would identify these two plants as:
A) mutualistic species. B) symbiotic species. C) ecological dominants. D) competitors.