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Question

Which illustrates feed back in development

A
As tissue 'X' develops, it secretes enzyme to inhibit development of tissue 'Y'
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B
As tissue 'X' develops, it secretes something that induces tissue 'Y' to develop
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C
As tissue 'X' develops, it secretes something that slows down growth of tissue 'Y'
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D
Tissue 'X' secretes RNA which changes the development of tissue 'Y'.
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Solution

The correct option is A As tissue 'X' develops, it secretes enzyme to inhibit development of tissue 'Y'
The X and Y tissue system is observed in Crustaceans. The X organ produces hormones that control development, to prevent molting during development, it releases an antiecdysis hormone, which stops the Y organ from secreting the molting hormone.
Therefore, the correct answer is' As tissue 'X' develops, it secretes enzyme to inhibit development of tissue 'Y'

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