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Chapter 23: Problem 26

One of the major concepts of biology is that form follows function. If that is so, what can be deduced from the shape and location of the root cap? a. It provides protection to the root tip. b. It absorbs water and minerals. c. It acts as a storage tissue. d. It replicates actively to elongate the root.

Short Answer

Expert verified
The correct answer is a.

Step by step solution

01

Understanding the Function of the Root Cap

The root cap is a structure located at the tip of a plant root. Its primary function is to protect the delicate root tip as it pushes through the soil.
02

Evaluating Option a

Consider the statement: 'It provides protection to the root tip.' This aligns with the known function of the root cap. Therefore, option a is a correct description of the root cap's function.
03

Evaluating Option b

Consider the statement: 'It absorbs water and minerals.' The root cap primarily protects the root tip rather than absorbing water and minerals. Absorption is mainly the function of root hairs.
04

Evaluating Option c

Consider the statement: 'It acts as a storage tissue.' The root cap does not function in storage; instead, it protects the root tip. Storage typically occurs in other parts of the root.
05

Evaluating Option d

Consider the statement: 'It replicates actively to elongate the root.' The root cap does not play a direct role in elongation. It mainly serves as a protective structure.
06

Choosing the Correct Answer

Based on the evaluation of options a, b, c, and d, the correct answer is option a: 'It provides protection to the root tip.'

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Key Concepts

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

Plant Root Structure
Understanding the basic structure of plant roots is essential to grasp their functions. Roots are crucial for a plant鈥檚 survival and growth. They anchor the plant into the soil and help absorb water and nutrients. However, the root system is more complex and consists of several parts:
  • Root Cap: Protects the growing tip.
  • Root Apical Meristem: Region of active cell division.
  • Zone of Elongation: Cells stretch and lengthen here.
  • Zone of Maturation: Cells differentiate and mature.
Each part plays a specialized role, working together to ensure the plant鈥檚 growth and nutrient uptake.
Root Cap Protection
The root cap is a small, but vital structure at the very tip of the root. It protects the delicate apical meristem, which is responsible for root growth. When the root grows, it pushes through tough soil particles. The root cap secretes a slimy substance that helps to lubricate the path of the root. This reduces damage to the root tip.
Additionally, the cells on the outer layer of the root cap continuously slough off. This provides a sacrificial layer that shields the more delicate cells beneath. The root cap also plays a role in gravity perception, helping the root grow downward, anchoring the plant firmly.
Plant Anatomy
The anatomy of a plant is specialized and functionally diverse. Besides roots, other major parts include stems, leaves, flowers, and fruits. Each organ has distinct structures and purposes:
  • Stems: Support and transport nutrients.
  • Leaves: Conduct photosynthesis to produce food.
  • Flowers: Reproductive structures that ensure propagation.
  • Fruits: Protect seeds and aid in their dispersal.
Understanding plant anatomy helps us appreciate how each part contributes to the plant's overall health and viability. Together, these components work synchronously to support life and ensure the propagation of plant species.

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Most popular questions from this chapter

A lab teacher wants to demonstrate thigmonastic behavior of a plant. Which of these experiments is the best choice? a. Observe flowering of a plant after a brief red light irradiation in the middle of a dark period. b. Observe whether seedlings bend towards blue light. c. Observe whether a tree grows bent in the direction of the prevailing wind. d. Touch the plant Mimosa pudicaand observe the closing of the leaflets.

An herbicide is developed that impairs the function of the cork cambium in woody plants. Which changes in the plant should be monitored to gauge the effectiveness of the herbicide? a. Cork will not be produced and the plant will not increase in girth. b. Excess cork will be produced and annual rings will not be formed. c. Cork will not be produced and the plant will not be able to exchange gases. d. Excess cork will be produced and the plant will not increase in girth.

Solute potential decreases when solutes are added to a cell. The consequence is to draw water into the cell. Which of these terms corresponds to solute potential? a. water potential b. pressure potential c. osmotic potential d. negative potential

Circadian rhythm refers to a pattern of behavior that recurs on a daily schedule in the absence of an external stimulus. Flowers open and close according to a circadian rhythm. If a plant is transferred to a dark environment, what will happen? a. Flowers will stay closed. b. Flowers will stay open. c. Flowers will open and close every day at the same time. d. Flowers will open and close at random times.

An herbicide causes roots to shrivel and die. What is the most direct consequence for a plant treated with the herbicide? a. The plant will grow normally but will not bloom. b. The plant will dry out because water is not reaching all its organs. c. New leaves will form to compensate for the dying of roots d. The plant will grow normally but will not produce fruit
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