WARMUP!!!!! (activity # 3)Barnacles can’t move, so finding mates can be

difficult. How do you think these animals solve this problem?

GOALS

•Analyze reproductive techniques in marine organisms and determine how such strategies evolved.

Your Task: Mommy, Where do Babies Come from?Groups of 2: Each group gets an envelope

PART 1: On your whiteboard:-Group the scenarios into similar problems

1. MATES ARE HARD TO FIND2. MY EGGS WILL GET EATEN3. IM TOO BIG TO REPRODUCE4. MY EGGS ARE VULNERABLE

-How do the animals solve the problem?

YOU HAVE 15 MINUTES CHALLENGE QUESTION: GRAB A WHITEBOARD AND

CLASSIFY THESE STRATEGIES AS SEXUAL OR ASEXUAL.

• Barnacles and Sea Hares share a BIG problem when trying to find a mate. What is that problem?

USE YOUR NOODLE:

REPRODUCTIVE NOTES PAGE 12PROBLEM HOW DO ANIMALS

SOLVE IT ?NAME OF STRATEGY

BENEFIT OF THIS STRATEGY

1. MATES ARE HARD TO FIND

USE YOUR NOODLE:• The eggs of Salmon and Sea Scallops are vulnerable to

attack. How do these animals get around this problem?

REPRODUCTIVE NOTES PAGE 12PROBLEM HOW DO ANIMALS

SOLVE IT ?NAME OF STRATEGY

BENEFIT OF THIS STRATEGY

2. MY EGGS KEEP GETTING

EATEN.

USE YOUR NOODLE:• Coconut Crabs and Shrimp also have vulnerable eggs.

How does their strategy differ from salmon and scallops?

REPRODUCTIVE NOTES PAGE 12PROBLEM HOW DO ANIMALS

SOLVE IT ?NAME OF STRATEGY

BENEFIT OF THIS STRATEGY

3. MY EGGS ARE VULNERABLE TO

ATTACK

• Anemones and Corals have the problem of getting to big as they grow. How do they solve this problem?

USE YOUR NOODLE:

REPRODUCTIVE NOTES PAGE 12PROBLEM HOW DO ANIMALS

SOLVE IT ?NAME OF STRATEGY

BENEFIT OF THIS STRATEGY

4. I’M TOO BIG TO

REPRODUCE

Groups of 2: Each group gets an envelopePART 2: On your whiteboard:- Match the animals to the REPRODUCTIVE STRATEGY they use.

YOU HAVE 10 MINUTES

Your Task: Mommy, Where do Babies Come from?

• Which of the REPRODUCTIVE STRATEGIES you looked at today would be beneficial when mates are difficult to find?

USE YOUR NOODLE:

HERMAPHRODITISM:BROODING:CLONING:BROADCAST SPAWNING

REPRODUCTIVE NOTES PAGE 12PROBLEM HOW DO ANIMALS

SOLVE IT ?NAME OF STRATEGY

BENEFIT OF THIS STRATEGY

1. MATES ARE HARD TO FIND.

2. MY EGGS KEEP GETTING EATEN.

3. MY EGGS ARE VULNERABLE TO

ATTACK

4. I’M TOO BIG TO REPRODUCE

• Which TWO REPRODUCTIVE STRATEGIES you looked at today would be useful in protecting eggs from predators?

USE YOUR NOODLE:

HERMAPHRODITISM:BROODING:CLONING:BROADCAST SPAWNING

• Which STRATEGY would OVERWHELM Predators?

Can Broadcasters be Hermaphroditic? Why or Why not?

USE YOUR NOODLE:

WHATS THE BENEFIT OF THIS?

Even though they both protect eggs from harm, BROADCASTING SPAWNING and BROODING do so

in different ways What are those differences?

USE YOUR NOODLE:

What benefit would CLONING provide for an organism?

USE YOUR NOODLE:

USE YOUR NOODLE:

• For the majority of animals we looked at today, when babies are born, they are released as microscopic plankton. What are the advantages to this? What are the disadvantages?

• Which of the REPRODUCTIVE STRATEGIES you looked at today would be considered SEXUAL and which would be considered ASEXUAL?

USE YOUR NOODLE:

HERMAPHRODITISM:BROODING:CLONING:BROADCAST SPAWNING

REFLECTION:• Below is a picture of a creature known as a

abalone. What REPRODUCTIVE STRATEGY could it use? Explain your answer.