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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

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BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

Hanging wire fruit baskets have many holes or open spaces. The major advantage of these spaces is that they:

a. prevent gibberellins from causing bolting or the formation ofrosettes on the fruit.

b. allow the evaporation of ethylene and thus slow ripening of the fruit.

c. allow oxygen in the air to stimulate the production ofethylene, which hastens the abscission of fruits.

d. allow oxygen to stimulate brassinosteroids, which hasten thematuration of seeds in/on the fruits.

e. allow carbon dioxide in the air to stimulate the production of cytokinins, which promotes mitosis in the fruit tissue and hastens ripening.

Summary Introduction

Introduction:

The improved palatability of a fruit marks the ripening of the fruit. A phytohormone, ethylene, is involved in the ripening process and changes the color and texture of the fruit on ripening. The ripening of the fruit can be affected by conditions suchas warmer temperature and others. It is because of this reason that the fruits are stored in cold temperatures.

Explanation

Justification/explanation for the correct answer:

Option (b) is, ‘to allow the evaporation of ethylene and thus slow ripening’. Ethylene is the only plant hormone that is gaseous in nature. This hormone is responsible for various processes, such as the shedding of leaves, the opening of flowers, and the ripening of fruit. It is known as the aging hormone in plants.

Since it is involved in the ripening of fruits, it important that ethylene produced by the fruits should be dispensed out for increasing the shelf life of the fruits. The gaseous state of the hormone makes it easier to be expelled out when the fruits are provided with enough air. It is for this reason that the hanging fruit baskets have holes. Hence, option (e) is correct.

Explanation for the incorrect answers:

Option (a) is, ‘prevent gibberellins from causing bolting or the formation of rosettes on the fruit’. Bolting in plants is marked by rapid growth. The plant flowers and seeds appear because of bolting on a leaf-based plant...

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