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nadezda [96]
2 years ago
9

Analysis of the nucleotide sequences of genes coding for phytochrome pigments suggest that the ancestors of angiosperms were ada

pted for survival in ____.
Biology
1 answer:
lilavasa [31]2 years ago
5 0

Answer:

c. shady forests.

Explanation:

According to a different source, these are the options that come with this question:

a. freshwater aquatic environments.

b. sunny, xeric habitats.

c. shady forests.

d. habitats with very cold winters.

e. oceans.

Angiosperms are plants that have stems, roots and leaves. Moreover, these plants have seeds in a flower. Usually, angiosperm eggs are fertilized through pollination in a flower. Flowers have both male and female reproductive organs. Based on the analysis of the nucleotide sequences of genes, it appears that the ancestors of angiosperms were adapted for survival in shady forests.

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The layer is the Mucosa layer.

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-Payshence xoxo
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In classical conditioning the ns becomes a ________ after it reliably signals the impending occurrence of the ________.
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The answer is <span>c.CS; US.

In classical conditioning, a new behaviour is learned via association. The stage before conditioning involves: 1. unconditioned stimulus (US) which produces an unconditioned response, and 2. neutral stimulus (NS) which has no effect on a person and produce a response only when paired with </span>unconditioned stimulus. During conditioning, neutral stimulus (NS) and unconditioned stimulus (US) pair and neutral stimulus becomes a conditioned stimulus (CS). In other words, <span>the ns becomes a <u>CS</u> after it reliably signals the impending occurrence of the <u>US</u>. </span>
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HACTEHA [7]
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