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- Explain how the gametophyte and sporophyte represent the alternation of generations in plants.
- Learn how the gametophyte is the dominant generation in mosses.
- Understand how ferns can reproduce without flowers or seeds.
- Discuss how gymnosperms reproduce with 'naked seeds'.
- Learn how angiosperms, or flowering plants, reproduce.
- Describe the type of asexual plant reproduction known as vegetative propagation.
- Discuss phototropic, geotropic and thigmotropic plant growth.
- Take a look at the types of photoperiodicity found in plants.
- Learn about the types of seasonal growth cycles found in plants.
- Explain how plant hormones control plant growth and reproduction.
1. Alternation of Generations: The Gametophyte and Sporophyte
Even though many plants seem simple, they often have very complex life cycles. We will look at how plants alternate between different life stages as well as the terms used to describe these unique points in their life cycle.
2. A Moss Life Cycle: Dominant Gametophyte
Mosses are unique because they spend most of their lives with only one set of genetic material rather than the normal two sets. We will look at this cycle and how the alternation of generations takes place in these non-vascular plants.
3. A Fern Life Cycle: Plant Reproduction Without Flowers or Seeds
Ferns are able to reproduce without using seeds. We will look at how ferns reproduce as well as the pattern of alternating between diploid and haploid life stages.
4. A Gymnosperm Life Cycle: Reproduction of Plants with 'Naked Seeds'
Some plants, such as pine trees, are able to reproduce with unprotected seeds. We will look at the major structures involved in this form of alternation of generations in gymnosperms.
5. An Angiosperm Life Cycle: Flowering Plant Reproduction
When you think of how plants reproduce, you probably think of flowers. We will look at how flowering plants use specialized reproductive structures to complete an alternation of generations life cycle.
6. Asexual Plant Reproduction: Vegetative Propagation and Bulbs
Not all plants make attractive flowers in order to reproduce. Some plants will not make seeds and pollen either. These plants have other ways to create new offspring. We will look at a few key methods of vegetative propagation.
7. Tropisms: Phototropic, Geotropic and Thigmotropic Plant Growth
Animals aren't the only things that can respond to the environment. While plants may seem inanimate at times, they, too, can respond to the environment in order to better survive.
8. Photoperiodicity: Short-day, Long-day and Day-Neutral Plants
Ever wonder why some plants will bloom in the spring but others in the summer? The length of daylight can influence when a flower will bloom. We will look at how the amount of sunlight regulates when plants produce flowers.
9. Seasonal Growth Cycles: Perennial, Annual and Biennial Plants
We continue to grow and change throughout our entire lives, living through many seasons and years. Plants have different patterns of growth and development regarding seasons, which we will look at in this lesson.
10. Plant Hormones: Chemical Control of Growth and Reproduction
We most often think of hormones as things that control our actions and development. However, even plants have these chemicals to help regulate growth and reproduction.
11. Cell Plate: Definition & Formation
During the process of cell division, the cell goes through a number of different phases. In one of these phases, we notice a cell plate formation that only occurs in certain cells. We'll examine that cell plate further in this lesson.
12. Flower Pistil: Definition & Function
While flowers might look like they are just for show, they are actually important in plant reproduction. One of the most important reproductive elements a flower is the pistil. Here you will learn what a pistil is and what it does.
13. Root Pressure: Definition & Theory
This lesson defines root pressure and its effect on plants. It also looks to the extent that root pressure has been scientifically proven, and how alternative theories come into play.
14. What Are Natural Fertilizers? - Examples & Overview
In this lesson you will learn about natural fertilizers and how they can stimulate plant growth when added to soil. Examples are given to aid your understanding. At the end, take a quiz to test your knowledge.
15. What Are Spores? - Definition & Types
Spores, for the most part, are units of asexual reproduction. They are produced by nonflowering plants, bacteria, fungi, and algae, and are often able to travel over long distances. Some bacteria also produce spores as a way to survive very harsh conditions.
16. What Is Pollination in Plants? - Definition & Types
This lesson will focus on the important process of pollination in plants. The lesson will also explain the types of pollination and how the environment and animals are involved in pollination.
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