Which term refers to the upper angle between a stem and attached leaf?
a. internode
b. axillary bud
c. node
d. lateral bud
Answer: b. axillary bud
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The fact that regeneration is a common type of reproduction in invertebrates suggests that
A. fertilization of eggs is not necessary. B. sexual reproduction is too costly. C. mitosis must occur before differentiation can begin. D. all the adult cells of many invertebrates retain the molecular machinery necessary to form a complete animal. E. invertebrates live in highly unstable environments.
Which of the following would result if the carbonic acid in the cells of the tubule wall were unable to dissociate?
1.The blood and tubule pH would rise.
2.The blood and tubule pH would fall.
3.The blood pH would rise, and the tubule pH would fall.
4.The blood pH would fall, and the tubule pH would rise.
One major difference between ectomycorrhizae and arbuscular mycorrhizae is
A. ectomycorrhizae are more common on plant roots than arbuscular mycorrhizae. B. ectomycorrhizae do not penetrate plant roots; arbuscular mycorrhizae penetrate plant roots. C. ectomycorrhizae are parasitic on plant roots while arbuscular mycorrhizae are not. D. ectomycorrhizae form mutualisms while arbuscular mycorrhizae are parasitic. E. most ectomycorrhizae are zygomycetes while most endomycorrhizae are basidiomycetes.
Treponema pallidum is the organism that causes syphilis, a sexually transmitted disease. This organism moves around freely, making it well adapted to traveling within bodily fluids and being spread from host to host during intimate contact
It possesses a single chromosome and has relatively few genes. The overall shape of this single-celled organism is similar to a corkscrew, with many twists and turns along its length. Based on this information, Treponema is most likely what type of cell? A) A prokaryotic spirillum B) A prokaryotic bacillus C) A prokaryotic coccus D) A flagellated eukaryote E) A ciliated eukaryote