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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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Ethylene differs from other hormones in that it _______.

  1. a. is a gas
  2. b. participates in defense
  3. c. operates during ripening
  4. d. none of the above

Summary Introduction

Concept introduction: Ethylene is a phytohormone produced in plants as ripening begins. It is a hydrocarbon gas, which is known to be the only gaseous plant hormone that cannot see or smell even. The major changes associated with a fruit ripening like change in color, texture and softness are by the action of ethylene hormone only. In addition to fruit ripening, it is also responsible for death of the plants. As fruit ripening is primarily depending on the action of ethylene, it is commercially exploited now days.

Explanation

Reason for correct answer: Ethylene is a gaseous plant hormone mainly responsible for the ripening of fruits. It is basically a very small naturally occurring hydrocarbon molecule which produces a colorless flammable gas having a sweet taste and smell. As the hormone is mainly involved in fruit ripening process, it is been exploited economically. Other than fruit ripening it is also involved in ageing process of the plant and it eventually leads to the death of that plant.

Option a. is given as “is a gas”. Since ethylene differs from other plant hormones in that it is a gas, option a. is the correct answer.

Reason for incorrect answer:

Option b...

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