What is an organism's advantage to having a single reproductive event in a lifetime rather than being able to reproduce repeatedly?
a. Reach a higher level of reproductive maturity
b. Having to raise only one group of offspring.
c. Being able to invest all its energy into the production of offspring.
d. Being able to divide energy among growth, reproduction and maintenance.
c
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Many of the different types of GPCRs in humans function to ____
a. distinguish different volatile molecules for odor recognition b. regulate metabolism by sensing and responding to changes in glucose levels c. regulate liver function by responding to different macromolecules d. aid in memory by binding to neurotransmitters in the amygdala e. trigger the fight of flight response by binding to hormones in the hypothalamus
The most critical factor affecting the initiation of seed germination is:
a. increasing day length b. oxygen availability c. water absorption d. warmth e. enzymes break down stored starches
Gymnosperms are seed plants that produce seeds ____
a. inside ovules b. on the surface of ovules c. inside fruits d. on their waxy needles e. from a microspore
Buds are produced
a. in the axils of leaves. b. at the very ends of stems. c. at the nodes. d. by the apical meristem. e. at all of these areas.