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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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Cotyledons develop as pan of ________.

  1. a. carpels
  2. b. accessory fruits
  3. c. embryo sporophytes
  4. d. flowers

Summary Introduction

Introduction: A flower is the reproductive part of the modified thick shoot of an angiosperm plant. A part of the carpel which carries female gametes is called the ovule. Ovules undergo fertilization to produce mature seeds. Seeds mainly consist of three parts – an embryo, nutritive tissue or food storage, and the seed covering called as seed coat. An important part of the embryo which is present inside the seed is called cotyledon. When they undergo germination, they become the first leaves of a developing seed.

Explanation

Reason for correct answer:

The double fertilization that takes place in most of the flowering plants will produce a triploid cell and a zygote. They undergo mitotic division and the triploid cell develops into endosperm while the zygote develops into an embryo sporophyte. During the maturation time of the embryo, the ovules’ integuments will develop into a seed covering called as seed coat. Ovules undergo fertilization to produce mature seeds. Seeds mainly consist of three parts – an embryo, nutritive tissue or food storage, and the seed covering called as seed coat. The enlarged basal region of a carpel containing ovules is called the ovary. They undergo fertilization to produce fruit. Ovules are a part of the carpel which carry female gametes. They undergo fertilization to produce seeds. Most of the nutrients are stored in two enlarged cotyledons in a eudicot seed.

Option c. is given as “embryo sporophytes”.

An important part of the embryo which is present inside the seed is called a cotyledon. When they undergo germination, they become the first leaves of a developing seed...

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