Declining auxin levels in leaves and fruits trigger these structures to produce ________, which mediates abscission
a. abscisic acid
b. gibberellins
c. ethylene
d. cytokinins
c
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The ________ plasmid of Agrobacterium tumefaciens is often used as a vector for cloning and introducing foreign genes into plants.
Fill in the blank(s) with the appropriate word(s).
All of the following about Homo habilis is true except
A. the species lived in Africa for 500,000 years and then became extinct. B. the species coexisted with dinosaurs. C. the species was replaced by a new kind of human, which had a larger brain. D. the species was small in stature. E. the species was associated with tools.
Explain why phocids, especially ones living in polar areas, generally have very short lactation periods compared to eared seals
What will be an ideal response?
You wish to study interspecies mating. Which organisms would be the best mating pair to study?
A) a Great Dane and a poodle B) a lion and a tiger C) a green bell pepper plant and a red bell pepper plant D) a striped tiger and an albino tiger