Page 142 - Science Course 1 (Book 1)

Plants: Reproduction Mo4-L6a: What is Alternation of

Generations?
Lesson 6
Let’s Begin

In this topic, you will learn the following
lessons: Asexual Reproduction vs. Sexual Reproduction
Asexual reproduction occurs when
Mo.4 - L6a: What is Alternation of Generations? a portion of a plant develops into a
separate new plant that is genetically
Mo.4 - L6b: How do Seedless and Seed Plants identical to the original, or parent,
Reproduce? plant.

Mo.4 - L6c: How Do Gymnosperms and
Angiosperms Reproduce?

Mo4-L6a What is Alternation of Generations?

KEY CONCEPTS: Sexual reproduction occurs when a plant’s sperm
1. What is alteration of generations in plants? combines with a plant’s egg. The resulting zygote can
grow into a plant that is a genetic combination of its
parents.
Vocabulary A-Z

Let us learn some vocabulary

Alternation of Generations
process that occurs when the life cycle of an
organism alternates between diploid and haploid
generations.

Diploid Plant
Humans live their entire lives as diploid
organisms.

Some organisms have haploid and diploid
stages called generations.

Haploid Plant

Spore
a daughter cell
produced from a
haploid structure. Alternation of Generations

Alternation of generations is when the life cycle
of an organism alternates between diploid and
haploid generations.

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