The letter “C” in the above figure represents

a. trigger zone.
b. output zone.
c. input zone.
d. conducting zone.
e. none of these.


Answer: d

Biology & Microbiology

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A plant with its floral structures arranged around a central axis has _________________ flowers. 

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Why do plants growing outside often have shorter and thicker stems than plants of the same species grown indoors?  

A.  The plants inside have a more constant source of light and therefore a higher level of phytochrome. B.  The outdoor plants are subject to mechanical stresses and they are exhibiting a thigmomorphogenic response. C.  The outdoor plants are subject to touch by animals and other plants and are exhibiting a thigmotropic response. D.  The indoor plants have elevated levels of auxin and are therefore taller than the outside plants. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about growth of protected vs. exposed plants? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

A characteristic of arthropods that has allowed for their great success is the presence of ________

A) bilateral symmetry B) an endoskeleton C) a brain D) specialized segments

Biology & Microbiology

Long-term potentiation is associated with NMDA receptors, one of several types of receptors that bind to the excitatory neurotransmitter _______. Its binding opens an internal cation channel within the receptor that allows _____ influx into the postsynaptic neuron, triggering a cascade of biochemical changes that lead to synaptic strengthening.

a) acetylcholine, Ca2+ ion b) glutamate, K+ion c) GABA, K+ ion d) glutamate, Ca2+ ion e) GABA, Ca2+ ion

Biology & Microbiology