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ZingPath: Organisms and Their Relationships

Factors Affecting Population Growth

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Organisms and Their Relationships

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Factors Affecting Population Growth

Biology

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You will learn about the various factors which impact populations and population growth.

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Now You Know

After completing this tutorial, you will be able to complete the following:

  • You will better understand the multiple factors which affect population growth and decline.

Everything You'll Have Covered

What are some characteristics that can be used to classify or sort flowering plants?

~ Answers will vary. Students may say by color or type of flower. Flowering plants can also be sorted by the number of flowering parts they have, the veins in their leaves, their stems, and their roots.

What feature is used to distinguish monocots from dicots in plant classification?

~ Monocots and dicots are distinguished by the number of tiny embryonic leaves, called cotyledons, found in their seeds. Monocots have one cotyledon and dicots have two cotyledons.

How do monocot and dicot flowers differ?

~ Monocots generally have flower parts (for example petals) in multiples of threes. Dicots have flower parts in multiples of four or five.

Describe the vein structure of monocot and dicot leaves.

~ Monocots usually have a number of major veins that run parallel down the leaf. Dicots usually have netted veins that spread throughout the leaf.

How do the vascular bundles of monocots and dicots differ?

~ Monocots have vascular bundles inside their stems that are found scattered throughout the stem. Dicots have vascular bundles that are arranged into a ring.

How do the root systems of monocots and dicots differ?

~ Monocots have a fibrous root system that spreads out into the soil, while dicots often have a more prominent central taproot.

Tutorial Details

Approximate Time 2 Minutes
Pre-requisite Concepts Students should be familiar with these terms: birth rate, competition, crowding, population
Course Biology
Type of Tutorial Animation
Key Vocabulary birth rate, competition, crowding