U2M1L2: Types of Reproduction

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Learning Objectives:

Describe the two types
of reproduction.

Lesson 2:
Types of
Reproduction

classkick: Sea Stars

Starter:

Multiple Choice

Which diagram is the correct illustration that gives the reason for how the sea star population grew in size?

Types of Reproduction

There are two types of reproduction:

• Sexual
• Asexual

Teach Time:

Asexual Reproduction

Asexual reproduction occurs when only one parent
organism or part of that organism produces a new
organism.
Advantages: Doesn’t require a parent organism, occurs

in a shorter amount of time, and works well in a stable
environment.

Disadvantages: No genetic variation. A major

environmental change can wipe out a species.

The new organism is genetically identical to its parent.

Two kinds of Asexual Reproduction:

1)Regeneration

The ability of an animal to regrow lost parts.

Two kinds of Asexual Reproduction:

2) Vegetative Reproduction

The ability of offspring to grow from part of the
parent plant.

These parts include stems, roots and leaves.

Multiple Choice

Sea star is which kind of asexual reproduction?

• regeneration

• vegetative reproduction

• budding

Draw

IN YOUR OWN WORDS, describe what is happening in the steps in this picture

The hydra has a growth that appears to get larger. The growth
looks like itself in the second photo.

Advantages: No need to have two organisms, quick.

Disadvantage: Leads to too many organisms that are exactly the same.

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classkick: Types of Reproduction practical activity

Type of
Reproduction

Advantages

Disadvantages

Sexual

More genetic Variation

Better survival in a changing
environment

Takes a longer amount of
time

Less reliable

Requires more energy

Asexual

Takes a shorter amount of time

Requires less energy

Double the rate of population
growth (under ideal conditions)

No genetic variation

less possible survival in
changing environments

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