Ch 25: Praxis Biology & General Science: Plant Characteristics, Structures and Nutrients

About This Chapter

Let us teach you about plant characteristics, structures and nutrients. The video lessons and self-assessment quizzes in this chapter can help you address questions about diversity of life, plants and animals on the Praxis II: Biology and General Science test.

Plant Characteristics, Structures and Nutrients - Chapter Summary

A significant portion of the Praxis II: Biology and General Science test focuses on diversity of life, plants and animals. To prepare for this test, which often is used as part of the high school science teacher certification process, watch the short, engaging video lessons in this chapter.

Our experienced professional educators will teach you about the evolution of plants, as well as the structure and function of male and female flower components. You'll also learn about methods of pollination and flower-pollinator relationships. Additional topics covered in this chapter include the following:

  • Classification of vascular, nonvascular, monocot and dicot plants
  • Structure of plant stems and leaves
  • Apical meristem and primary shoot system growth
  • Lateral meristem and secondary shoot system growth
  • Nitrogen fixation: Significance to plants and humans
  • Xylem: The effect of transpiration and cohesion on function
  • Phloem: The pressure flow hypothesis of food movement

Plant Characteristics, Structures and Nutrients Objectives

The Praxis II: Biology and General Science test might be part of your state's certification process for secondary school science teachers. Of the test's 120 multiple-choice questions, approximately 17% focus on diversity of life, plants and animals; this might include questions on plant characteristics, structures and nutrients. You'll have two hours to take this test.

You can prepare for the Praxis II through these video presentations, transcripts and self-assessment quizzes. The videos are typically less than 10 minutes in length, and the transcripts sometimes feature links to other lessons, allowing you to expand your learning experience. The quizzes are in a multiple-choice format, just like the Praxis II.

13 Lessons in Chapter 25: Praxis Biology & General Science: Plant Characteristics, Structures and Nutrients
Test your knowledge with a 30-question chapter practice test
The Evolution of Plants and Fungi: Characteristics & Evolutionary History

1. The Evolution of Plants and Fungi: Characteristics & Evolutionary History

In early classification systems, plants and fungi were grouped together. While there are some similarities between these two kingdoms, there are some key differences that we will explore.

Classification of Vascular, Nonvascular, Monocot & Dicot Plants

2. Classification of Vascular, Nonvascular, Monocot & Dicot Plants

Plants may not seem like the most interesting things around, but they are definitely useful. In this lesson, we will explore the basic classification of plants and the unique characteristics of each group.

Structure of Plant Stems: Vascular and Ground Tissue

3. Structure of Plant Stems: Vascular and Ground Tissue

You can determine the age of a tree by looking at its rings. In this lesson, we will look at the basic structures of stems and explore what causes the rings in a tree trunk.

Apical Meristem & Primary Shoot System Growth

4. Apical Meristem & Primary Shoot System Growth

Just like humans, plants need to grow. In this lesson, you'll see how plant growth occurs at specific locations and how the height of the plant is increased.

Lateral Meristem & Secondary Shoot System Growth

5. Lateral Meristem & Secondary Shoot System Growth

Why do some plants experience a secondary growth? Why do some plants grow only in height but others grow in height and width? Discover the answers to these questions in this lesson.

Structure of Leaves: The Epidermis, Palisade and Spongy Layers

6. Structure of Leaves: The Epidermis, Palisade and Spongy Layers

Leaves may look pretty in the fall when they are changing colors, but they also provide many necessary functions for plants. In this lesson, we will explore the structures and functions of leaves.

Primary Root Tissue, Root Hairs and the Plant Vascular Cylinder

7. Primary Root Tissue, Root Hairs and the Plant Vascular Cylinder

Roots of plants can provide support, food and water. We will look at diagrams and photos to see the different parts of roots in order to explain these different functions.

Root System Growth: The Root Cap, Primary Roots & Lateral Roots

8. Root System Growth: The Root Cap, Primary Roots & Lateral Roots

It is easy to see some plants get taller, but it is important to know that plants must also have a strong support that we cannot always see. Root growth helps plants survive and can happen in two ways.

Nitrogen Fixation: Significance to Plants and Humans

9. Nitrogen Fixation: Significance to Plants and Humans

Almost 80% of our atmosphere is nitrogen, but we can't use it. We will look at how this unusable nitrogen is converted into a form we can use and why nitrogen is important to plants and humans.

Xylem: The Effect of Transpiration and Cohesion on Function

10. Xylem: The Effect of Transpiration and Cohesion on Function

Roots absorb water and leaves release water, but how does water move up a plant? In this lesson, we will look at how this happens in vascular plants, including the importance of xylem, cohesion and transpiration in the process.

Phloem: The Pressure Flow Hypothesis of Food Movement

11. Phloem: The Pressure Flow Hypothesis of Food Movement

Leaves produce sugars and stems; roots and fruits use these sugars for energy. In this lesson, we will look at how these sugars move throughout vascular plants, including the importance of phloem and the pressure flow hypothesis in the process.

Flowers: Structure and Function of Male & Female Components

12. Flowers: Structure and Function of Male & Female Components

In this lesson, we'll look at the parts of a flower and learn their functions. These natural beauties provide indispensable services to the plants they adorn.

Methods of Pollination and Flower-Pollinator Relationships

13. Methods of Pollination and Flower-Pollinator Relationships

Ever wonder why bees are attracted to specific flowers? We will look at why certain animals are drawn to certain plants and other methods of pollination in this lesson.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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