1. Structures of Life: Embryology
Science
Structures of Life: Embryology
Lesson 5:
Hydroponics
Materials needed:
-blank flash card for each student
-Structures of Life book for each student
-life cycle pictures and binder page for each student
-glue stick, scissors, and colored pencils for each
student

2. What is the life cycle of a plant?
The BIG Question:
What is the life cycle of a plant?
Today, we’ll wrap up the part of our unit on plants.
We’ve been investigating the life cycle of a plant, and we learned some important new words yesterday.
The life cycle of a plant begins with a…

3. seed
…seed.
When water is added to a seed, it will start to become bigger and more complex.
What do you call…

4. the process of becoming bigger and more complex
growth
the process of becoming bigger and more complex
…the process of becoming bigger and more complex? *
There is a name for…

5. the beginning of the growth of a seed after being dormant
germination
the beginning of the growth of a seed after being dormant
…the beginning of the growth of a seed after being dormant.
What do you call that? *
After a few days, the…

6. …seed will turn into * a young plant.
What do you call a…

7. a young plant that grows from a seed
seedling
a young plant that grows from a seed
…young plant that grows from a seed? *
Let’s add a fact to our…

8. * All living things are organisms.
* Life for a plant begins in a
seed.
* A seed is an organism (a living
thing).
* Seeds develop in the part of
a plant called the fruit.
* Different kinds of fruit have
…big ideas page.
I’m out of room on the front of my sheet, so I am going to the…
different kinds and numbers
of seeds.
*Seeds change in the presence
of water. They become bigger
and heavier.
*All living things have a life
cycle.
*The life cycle of a plant starts
with a seed. Water makes the
seed start to grow and develop.

9. *Young plants that grow from
seeds are called seedlings.
…back.
Let’s write…*
We found out that seedlings have…

10. Structures of a Seed Structures of a Seedling seed coat leaves
…structures that are different from the seed.
A seed has * an outer layer to protect it. What is that structure called? *
Inside, a seed has * an undeveloped plant. What is that structure called? *
It also has a * food supply for the embryo. What is that called? *
A seedling, though, has a structure * that grows downward to provide support and take up water and nutrients. What is that structure? *
It also has a structure * that grows upward and supports the rest of the plant. What structure is that? *
A seedling has these * flat structures that grow from the stem. What are these structures? *
There is one structure from the seed that is still present on the seedling. Can you find it? *
seed coat
leaves
cotyledon
stem
embryo
roots
cotyledon

11. *Young plants that grow from
seeds are called seedlings.
*Seedlings have roots, stems,
and leaves.
Let’s add another fact to our big ideas page.
Let’s write…*
I have a short animation I want to show you of a green bean seed germinating…

12. (point out structures as they form)
We are going to continue to observe the life cycle of our…

13. …bush bean plant.
So, I have an important question for us to…

14. Think about it!
What will we need to provide for our seedling in order for it to grow and develop into a mature bush bean plant?
…think about.
Can someone read it?
Talk it over with your partner. (share)
Let’s add another entry to our…

15. *Young plants that grow from
seeds are called seedlings.
*Seedlings have roots, stems,
and leaves.
*Plants need water, sunlight,
nutrients, and space to grow.
…big ideas page.
Let’s write…* (Plants need water, sunlight, nutrients, and space to grow.)
If we provide all these things, our seedling will continue to grow and develop, and we should be able to observe the entire life cycle of our bush bean plant.
Remember that the…

16. life cycle
the sequence of changes to an organism as it develops from its earliest stage to the same stage in the next generation
…life cycle is the sequence of changes that a plant goes through as it develops from its earliest stage to the same stage in the next generation.
We’re going to add a page to our binders to show the entire life cycle of the bush bean plant.

17. Life Cycle of a Bush Bean Plant
When you get your page, write a 9 in the bottom corner.
Let’s write the title…*
I am giving you a set of… 9

18. …picture cards. I would like you to cut apart your picture cards and lay them on your…

19. Life Cycle of a Bush Bean Plant
Life begins in a seed.
The fruit produces seeds.
A root begins to grow.
…sheet to show the steps in the life cycle of the plant.
Of course, which picture will come first? *
What will come next? * * * * * *
Go ahead and glue down your pictures.
Now let’s add some labels. Choose a color for your first label. The first step is…* Also outline * your picture in that color.
(continue in same manner for all the pictures)
Let’s add another fact to our…
The flowers produce fruit.
A seedling develops.
The seedling grows into a mature plant.
Flowers are produced. 9

20. *Young plants that grow from
seeds are called seedlings.
*Seedlings have roots, stems,
and leaves.
*Plants need water, sunlight,
nutrients, and space to grow.
*Fruits develop from the
flowers of a plant.
…big ideas page.
Let’s write…* (Fruits develop from the flowers of a plant.)
Add this sheet to your binder and then find your…

21. Five Functions of Living Things1
Living vs. Nonliving 2
Observing a Fruit 3
Comparing Seeds 4
The Sprouting Seed
5-6
…Table of Contents page.
Here is what I wrote…* pages…*
I mentioned that we are going to observe the life cycle of our bush bean plants so that we can see all these stages in real life.
We said we would need to provide water, sunlight, food, and space to grow.
So now I am wondering…
The Soaked Seed
7-8
Life Cycle of a Bush Bean Plant 9

22. Could a plant continue to grow without soil?
Think about it!
Could a plant continue to grow without soil?
…this.
Can someone read it?
What do you think?
It turns out that plants can be grown without soil!
Let’s find out how by reading in our Structures of Life book. (read page 10 and 11)
We are going to use…

23. growing plants in water with nutrients added
hydroponics
growing plants in water with nutrients added
…hydroponics to grow our bean plants.
Let’s make a flash card for this word.
Remember, hydroponics is…*
Write the word on the front and definition on the back.