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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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A plant cell's response to a hormone depends on ______.

  1. a. which hormone receptors it has
  2. b. the way its hormone receptors work inside the cell
  3. c. the presence or absence of other hormones
  4. d. all of the above

Summary Introduction

Concept introduction: Plant hormones or phytohormones are the chemical molecules produced by plant tissues in extremely low concentrations for regulating many cellular processes. These hormones are very essential for plants as they decide many different attributes necessary for their growth. The major characters determined by plant hormones are flowering, shedding of leaves, shoot and root elongation, ripening of fruits and abscission.

Explanation

Reason for the correct answer: Plant hormones play a vital role in the growth and development of plants. Most of the cardinal functions inside the plant body are controlled and coordinated by these hormones. There are several crucial factors associated with a plant cell for its response to a hormone. Each hormone has its own receptor to act and these receptors have definite functions too. Any deviation in these receptors would seriously affect the hormone action. The presence or absence of any other hormone is also responsible for the action of a plant cell to a particular hormone.

Option d. is given as, “all of the above”. Since a plant cell’s response to a hormone depends on the way its hormone receptors work inside the cell, the types of hormone receptors it has and also depends on the presence or absence of other hormones, option d. is the correct answer.

Reasons for the incorrect answer:

Option a. is given as, “which hormone receptors it has”...

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