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ASHA 777 [7]
3 years ago
5

Please help. In Pavlov’s experiments on classical conditioning, dogs

Biology
2 answers:
il63 [147K]3 years ago
5 0
C. were conditioned to salivate in response to the sound of a bell.
const2013 [10]3 years ago
3 0
It is C, I got it right on my test.
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Answer:

C. petals

Explanation:

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<em>The part that will not be necessary in wind pollinated angiosperm is the petals .</em>

The petal is a part of flower that is usually colorful and primarily function by attaracting insect pollinators to the flower.

<u>Since wind pollinated angiosperms do not need to attract insect for pollination, they do not need the colorful petals. They rely on wind to carry their pollen from their anthers to their stigmas (pollination).</u>

Hence, the correct option is C.

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What are TWO factors that could affect the rate of diffusion?
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Answer:

Diffusion occurs when particles move from an area of high concentration to an area of low concentration. The factors affecting rate of diffusion are: concentration, temperature, mass of the particle and properties of the solvent in which diffusion occurs. Faster movement equals faster diffusion.

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