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Chapter 23: Problem 7

The dermal tissue of a plant provides __ for the plant. a. transport of water b. transport of minerals c. support d. protection

Short Answer

Expert verified
d. protection

Step by step solution

01

- Understand the Role of Dermal Tissue

Dermal tissue in plants primarily serves as the outer protective covering or 'skin' of the plant.
02

- Analyze Each Option

Review what each option represents: a. Transport of water - typically a function of vascular tissue (xylem). b. Transport of minerals - also a function of vascular tissue (xylem and phloem). c. Support - traditionally the role of structural tissues like sclerenchyma. d. Protection - aligns with the role of dermal tissue.
03

- Match the Role with the Correct Option

Given the role of dermal tissue as the protective covering, the correct answer must relate to protection.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

plant protection
The dermal tissue in plants is crucial for plant protection. It serves as the plant's first line of defense against various external factors. This tissue forms the outermost layer, known as the epidermis, which acts similarly to human skin. It protects plants from:
  • Environmental stressors such as extreme temperatures and wind.
  • Pest and pathogen attacks by creating a barrier that is often waxy.
  • Water loss through specialized cells called guard cells that control the opening and closing of stomata.
Furthermore, dermal tissue may also include trichomes, which are tiny hair-like structures that deter herbivores or reduce water loss by reflecting sunlight.
plant tissue types
Plants have various tissue types that each serve a unique purpose. These tissues can be broadly classified into three main types:

  • Dermal Tissue: This is the outer protective layer of the plant. It includes structures like the epidermis, cuticle, and trichomes. Dermal tissues function primarily in protection and gas exchange.
  • Vascular Tissue: This type is responsible for transporting water, minerals, and nutrients throughout the plant. There are two main types: xylem and phloem. Xylem transports water and minerals from roots to other parts of the plant, while phloem distributes sugars and other organic compounds.
  • Ground Tissue: Found between dermal and vascular tissues, this type plays roles in photosynthesis, storage, and support. Subtypes include parenchyma, collenchyma, and sclerenchyma - each serving different supportive roles depending on their structure and location within the plant.
Each type of tissue integrates and functions together, ensuring the plant can grow, reproduce, and survive in its environment.
plant anatomy
Understanding plant anatomy is key to appreciating how different tissues and structures support the plant鈥檚 life processes. Here are main plant structures:
  • Roots: These anchor the plant and absorb water and nutrients from the soil. They often have specialized tissues for storage and transport.
  • Stems: These support the plant and act as conduits for nutrients and water between the roots and leaves. They contain vascular tissues that create pathways for transport.
  • Leaves: Mainly involved in photosynthesis, leaves contain a variety of tissues for light capture and gas exchange, including chloroplasts within their cells.
Additionally, plants have reproductive structures, including flowers, seeds, and fruits, ensuring the continuation of the species. Each of these parts works in harmony, utilizing various tissue types to sustain growth, reproduce, and respond to their environment.

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Most popular questions from this chapter

Students observe several slides of tissue cross-sections under the microscope. They are asked to develop a key system to classify the slides as coming from either monocot or dicots. What key system should the students develop? a. In monocots, the vascular bundles form a distinct ring. In dicots, the vascular bundles are scattered in the ground tissue. b. In monocots, the vascular tissue forms a characteristic X shape in the center. In dicots, the phloem and xylem cells are scattered in the pith. c. In monocots, the vascular bundles are scattered in the ground tissue. In dicots the vascular bundles form a distinct ring. d. In monocot roots, the pith is absent or very small. In dicots, the pith is large and well developed.

Which region of a plant is most likely to contribute to an increase in its length? a. tip of leaves b. dermal layer c. vascular bundles d. tip of the root

Stomata are usually found in higher numbers on the abaxial or bottom surface of a leaf. What is the advantage of such an arrangement? a. Presence of stomata on the abaxial or bottom surface ensures that no, or very little, water is lost due to guttation. b. The abaxial or bottom surface receives more sunlight and water evaporates faster by transpiration. c. Herbivores do not prefer to eat leaves with stomata on the abaxial or bottom surface. d. The adaxial or upper surface receives more sunlight and water evaporates faster by transpiration.

A student reported vascular tissue while inspecting a cross-section of a plant stem under the microscope. Which cells would allow the student to identify vascular tissue? a. tracheids, vessel elements, sieve-tube cells, and companion cells b. cells actively dividing at the apex of the stem c. parenchyma cells at the center of the section d. cells covered by a cuticle at the outside edge of the section

How is a leaf different from a leaflet? a. A leaf petiole attaches directly to the stem at a bud node, whereas a leaflet petiole is attached to the main petiole or the midrib, not the stem. b. A leaf has reticulate venation whereas leaflets show parallel venation. c. A leaf petiole attaches to the main petiole or the midrib, not the stem, whereas a leaflet petiole attaches directly to the stem at a bud node. d. A leaf has parallel venation whereas leaflets show reticulate venation.
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