Biology 2e
Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 30, Problem 1VCQ

Figure 30.7 Which layers of the stem are made of parenchyma cells?

  1. cortex and pith
  2. epidermis
  3. sclerenchyma
  4. epidermis and cortex

Chapter 30, Problem 1VCQ, Figure 30.7 Which layers of the stem are made of parenchyma cells? cortex and pith epidermis

Expert Solution & Answer
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Summary Introduction

Introduction:

Parenchyma cells are one of the most common cells found in plants that presents in most of its part as in stem, root, inside leaf, pulp of the fruit etc. these parenchyma cells responsible for metabolic functions like photosynthesis etc.

Answer to Problem 1VCQ

Correct answer: Option (a), cortex and pith is correct answer.

Explanation of Solution

Explanation/justification for the correct answer:

Option (a) cortex and pith. The cortex and pith in central and outer respectively of the stem are made up of parenchyma cells of the plant. Cortex is the outer layer and pith is the central one that is bounded between epidermis and endodermis.

Explanation for incorrect answer:

Option (b), epidermis. Epidermis is the dermal tissue of the plant. It is a single layer of cells that covers and protects the underlying tissues. So, it is an incorrect answer.

Option (c), sclerenchyma. These cells provide support to the plant but most of them are dead on maturity. These cells having secondary cell wall that is thickened with the deposit of lignin. So, it is an incorrect answer.

Option (d) epidermis and cortex. Epidermis is the dermal tissue that is to protect and covers the underlying tissues, while the cortex is one of the parenchyma cells. So, it is an incorrect answer.

Conclusion

The layers of stem which are made up of parenchyma cells are cortex and pith. Hence, option (a) is the correct answer.

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Tissues in a carrot root, make a simple sketch and label the tissues. The outermost covering of the cylinder( the skin of the carrot root) is made up of dermal tissue, particularly the periderm. Beneath the periderm is a layer called the cortex which is made up of parenchyma, a type of ground tissue. Underneath the cortex is vascular cylinder which contains the ploem(the outer layer of the cylinder) and the xylem (the central core of the cylinder, the lightly colored part). Between the ploem and the xylem where the vascular cambium is located (a layer that is only one cell thick) a lateral meristematic tissue.   plsssss help me sketch this and label it, thank you.
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Chapter 30 Solutions

Biology 2e

Ch. 30 - Secondary growth in stems is usually seen in...Ch. 30 - Roots that enable a plant to grow on another plant...Ch. 30 - The forces selective uptake of_____ minerals in...Ch. 30 - Newly-formed root cells begin to form different...Ch. 30 - The stalk of a leaf is known as the petiole lamina...Ch. 30 - Leaflets are a characteristic of leaves ______ ....Ch. 30 - Cells of Thecontain chloroplasts epidermis...Ch. 30 - Which of the following is most likely to be found...Ch. 30 - When stomata open, what occurs?______ Water vapor...Ch. 30 - Which cells are responsible for the movement of...Ch. 30 - The main photoreceptor that triggers phototropism...Ch. 30 - Phytochrome is a plant pigment protein that...Ch. 30 - A mutant plant has roots that grow in all...Ch. 30 - After buying green bananas or unripe avocadoes,...Ch. 30 - A decrease in the level of which hormone releases...Ch. 30 - A seedling germinating under a stone grows at an...Ch. 30 - What type of meristem is found only in monocots,...Ch. 30 - Which plant part is responsible for transporting...Ch. 30 - Describe the roles played by stomata and guard...Ch. 30 - Compare the structure and function of xylem to...Ch. 30 - Explain the role of the cork cambium in woody...Ch. 30 - What is the function of lenticels?Ch. 30 - Besides the age of a tree, what additional...Ch. 30 - Give two examples of modified stems and explain...Ch. 30 - Compare a tap root system with a fibrous root...Ch. 30 - What might happen to a root if the pericycle...Ch. 30 - How do dicots differ from monocots in terms of...Ch. 30 - Describe an example of a plant with leaves that...Ch. 30 - The process of bulk flow transports fluids in a...Ch. 30 - Owners and managers of plant nurseries have to...Ch. 30 - What are the major benefits of gravitropism for a...Ch. 30 - Fruit and vegetable storage facilities are usually...Ch. 30 - Stomata close in response to bacterial infection....
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