Campbell Essential Biology with Physiology (6th Edition)
Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 28, Problem 1SQ

While walking in the woods, you encounter an unfamiliar flowering plant. Which of the following plant features would help you determine plant is a monocot or a eudicot? (Choose all that are appropriate)

  1. a. size of the plant
  2. b. number of seed leaves
  3. c. shape of its root system
  4. d. number of petals in its flowers
  5. e. arrangement of vascular bundles In Its stem
  6. f. whether or not it produces seed-bearing cones
Expert Solution & Answer
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Summary Introduction

To examine: Which plant features would help to determine whether that plant is a monocot or a eudicot.

Introduction: Angiosperms are that plants that have flowers and produce seeds that are enclosed within a carpel. The plants can be classified on the basis of structural difference into monocots and eudicots. The name of the embryonic structure of seed leaves is called cotyledons. A monocot has one seed leaf, whereas a eudicot has two seed leaves.

Answer to Problem 1SQ

Correct answer:

Option b. is given as “number of seed leaves”.

Option c. is given as “shape of the root system”.

Option d. is given as “number of petals in its flowers”.

Option e. is given as “arrangement of vascular bundles in its stem”.

Therefore, options b., option c., option d., and option e. are correct.

Explanation of Solution

Reasons for the correct statement:

Monocot has one cotyledon, fibrous root, flowers multiple of three, and vascular bundles are arranged complexly.

Eudicot has two cotyledons, taproot system, flowers usually multiple of four or five, and vascular bundles are arranged in a ring.

Hence, option b., option c., option d., and option e. are correct.

Reasons for the incorrect statement:

Option a. is given as “size of the plant”, but both monocot and eudicot have different sizes of plants. Hence, this cannot be used to differentiate between them.

So, option a. is incorrect.

Option f. is given as “whether or not it produces seed-bearing cones”, but seed-bearing cone is not a feature of monocot or eudicot.

So, option b. is incorrect.

Hence, options a. and f. are incorrect.

Conclusion
Number of seed leaves, shape of the root system, number of petals in its flowers, and arrangement of vascular bundles in its stem can be used to differentiate between monocot and eudicot.

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Put the following 3 fictional plants in order from earliest to most recent according to their characteristics: A. The Terpad Plant: This plant reproduces using spores and has proper leaves and vascular tissue. B. The Feltris Plant: The Feltris plant lives in moist environments since it doesn't have any vascular tissue to maintain hydration throughout the plant. This plant has no roots either but has small root-like structures called rhizoids which help anchor them to the ground. Water is also required in order for fertilization. C. The Lancelot Plant: This plant can grow in either moist or dry environments, has true roots, stems and leaves and reproduces via seeds which develop within an ovary.
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