III Bimester Science Class Ms. Johana Matta

1. What is a Plant?
What characteristics do all plants share?
What do plants need to live successfully on land?
Unit 3 - Lesson 1

2. What characteristics do all
plants share?
• Nearly all plants are autotrophs, organisms that
produce their own food. With the exception of one
green algae, all plants contain many cells. In
addition, all plant cells are surrounded by cell walls.

3. What is a Chlorophyll?
• Is a green pigment found in the chloroplasts of
plants, algae, and some bacteria. (because they are
very closely related, plants and green algae both
belong to the plant kingdom)
• https://www.youtube.com/watch?v=545rqaOJQD8
• https://www.youtube.com/watch?v=aAQYpra4aUs

4. • Sunlight provides
the energy for a
plant’s food-
making process,
called
photosynthesis.
• During
photosynthesis,
a plant uses
carbon dioxide
gas and water to
make food and
oxygen.

5. Plants vrs. Animals
• A difference between plant
and animal cells is that plant
cells have a cell wall, which
surrounds the cell
membrane and separates
the ell from the environment.
• https://www.youtube.com/wa
tch?v=9UvlqAVCoqY

6. Vacuole
• Plants have one
large vacuole, or
storage sac that can
expand and shrink
as it fills with water,
wastes, and food.

7. • With the exception of
some green algae, all
plants are multicellular, or
made up of many cells.
• These cells are organized
into tissues, or groups of
similar cells that perform
a specific function in an
organism.
• https://www.youtube.com/
watch?v=zHp_voyo7MY

8. Vascular Tissue
• A system of tubelike structures inside a plant, allow
minerals, water, and food to move throughout the
plant.

9. Cuticle
• Plants retain
water by having
a waxy
waterproof layer
called a cuticle
on their leaves
and stems.

10. What do plants need to live
successfully on land?
• They must have ways to obtain water and other
nutrients from their surroundings, retain water,
support their bodies, transport materials, and
reproduce.
• Plants obtain water and other nutrients from the
soil through roots.

11. Building Vocabulary
• A group of similar cells that perform a specific function
is called a ____________.
• The internal transporting system through which water,
minerals, and food move inside the plant is called
___________________.
• A ________________ is a structure inside a plant’s cell
in which food is made.
• The process by which plants make food is called
________________.

12. Building Vocabulary
• A ________________ is a waxy, waterproof layer
that covers the leaves and stems of most plants.
• The sac inside a plant cell where water, wastes,
and food are stored is called ______________.
• The green pigment called _______________ is
necessary to the food-making process in plants.

13. Review
• Which of the following is thought to be the ancestor of
land plants?
a. bacteria
b. red algae
c. ferns
d. green algae
• Organisms that produce their own food are called?
a. heterotrophs
b. autosomes
c. autotrophs
d. herbivores

14. Review
• The sac inside a plant cell were water, food, and wastes
are stored is the ____
a. vacuole
b. chloroplast
c. chlorophyll
d. cuticle
• Two structures found in plant cells but NOT in animal cells
are
a. cell wall and cell membrane
b. chloroplasts and cell membrane
c. cell wall and chloroplasts
d. vacuole and nucleus

15. True or False
• The cell wall helps a plant retain water. ____
• During photosynthesis, plants produce carbon
dioxide. ____
• The green pigment found in specialized plant
structures is called chlorophyll. ____
• The system of tubelike structures inside a plant
through which water, minerals, and food move is
called root tissue. ____

16. True or False
• Nearly all plants are unicellular. ____
• The energy for photosynthesis comes from the sun.
____

17. Classifying Plants
What are the characteristics of Nonvascular Plants?
What are the characteristics of Seedless Vascular
Plants?
What are the characteristics of Seed Plants?
Unit 3 - Lesson 2

18. Plant Structures
What are the functions of roots, stems, and leaves?
How do seeds become new plants?
What are the structures of a flower?
Unit 3 – Lesson 3

19. ROOTS
• Roots anchor a
plant in the ground,
absorb water and
minerals from the
soil, and sometimes
store food.
• Types of roots:
Taproot and the
Fibrous.

21. STEMS
• The stem of a plant has two
main functions.
• The stem carries substances
between the plant’s roots and
leaves. The stem also provides
support for the plant and holds
up the leaves so they are
exposed to the sun.

22. Stem Structure

23. LEAVES
• Leaves capture
the sun’s
energy and
carry out the
food-making
process of
photosynthesis.

25. How does seeds become
new plants?
Inside a seed is a
partially developed
plant. If a seed lands in
an area where
conditions are
favorable, the plant
sprouts out of the seed
and begins to grow.

27. Seed Dispersal

28. Germination

30. Plant Reproduction
What are the stages of a plant’s life cycle?
How do Plants reproduce?
Unit 3 – Lesson 4