About This Chapter
How it works:
- Identify which concepts are covered on your plant biology homework.
- Find videos on those topics within this chapter.
- Watch fun videos, pausing and reviewing as needed.
- Complete sample questions and get instant feedback.
- Finish your plant biology homework with ease!
Topics from your homework you'll be able to complete:
- Plant classifications
- Structure of plant stems
- Shoot system growth
- Root system growth
- Nitrogen fixation
- Xylem and phloem
- Male and female components of flowers
- Methods of pollination
1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. 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.
10. 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.
11. 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.
12. 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.
13. Apical Meristem: Definition & Function
Land plants both tall and short need to grow vertically and form shoots that hold their leaves up to the sun and roots that push beneath the soil. This is all possible thanks to apical meristem.
14. Corolla of a Flower: Structure, Function & Definition
This lesson will investigate the structure of the flower known as the corolla. The lesson will also explore the variation in this structure as well as its function and importance in plant reproduction.
15. Cotyledon: Definition & Function
Did you know that the seed of a plant is made of multiple parts? In this lesson, we will examine the cotyledon of a seed to gain an understanding of what they are and how they function for the new plant.
16. Cuticle Of The Leaf: Function & Concept
We'll explore one of the adaptations that allowed plants to venture from the water onto dry land. Learn about the function of the cuticle, then test your knowledge with a short quiz.
17. Hybrid Plants: Definition & Examples
Plant hybridization is nothing new to science; as a species, we have been breeding plants together for thousands of years. Here we will discuss hybrid plants in the classical sense and how this hybridization has helped science.
18. Photosystem: Definition & Overview
Learn how plants and photosynthesis are a requirement for animal life on our planet. Discover the role of photosystems in this process, and see how plants use light and water to make oxygen and food.
19. Plastids: Definition, Structure, Types & Functions
Plastids are found in plants and some algae. They are necessary for essential life processes, like photosynthesis and food storage. Read this lesson to learn about major types of plastids and what they do to sustain life.
20. Root Hairs in Plants: Function & Definition
In this lesson, you will learn about root hairs, which are the structures that allow a plant to get water and nutrients from the soil. They are a delicate but necessary component of a plant's overall root system.
21. Spongy Layer of a Leaf: Function & Concept
The spongy layer of a leaf may sound odd, but it has an important role in how the leaf functions. Here, you will learn what the spongy layer is, where it is, and what it does.
22. What Are Perennial Plants? - Examples & Types
All plants have unique life cycles and requirements in order to survive. One group of plants is known as perennials. In this lesson we will examine types of perennials and view examples of them.
23. What are the Parts of a Plant?
Ever look at a plant and wonder what each specific part is? A plant has two basic plant parts: the shoot and root systems. In this lesson, you'll learn and be able to identify each individual plant part within the shoot and root systems.
24. What is Agar?
Here we will look at what agar is, what it is used for, and generally why it is important. Agar resembles gelatin and in most cases is very similar to it.
25. What Is Pollen? - Definition & Benefits
Pollen is the delivery package for plant sperm, or the plant's male reproductive cell. It moves from the male plant to the female plant through a variety of delivery mechanisms.
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