Plant Review and Adaptations

Do you see what I see?

Write down as many parts of the plant cell can you label?

Chloroplast

Vacuole

Cell Membrane

Cell Wall

Nucleus

Fibrous roots – prevent erosion

Taproots – reach water deep in the ground

Releasing O2 + H2O

Transpiration

Leaves: Monocot vs. Dicot

Monocot – parallel veins

Dicot – branched

veins

Label the flower

Did we get it?

Leaf

AB

C

D

E

F

• A: vein

• B: petiole

• C: margin

• D: blade

• E: axillary bud

• F: stem

Life cycle of a plant

Cross section of leaf

Cross section of leaf

cuticle

Upper edidermis

Pallisade mesophyll

Spongy mesophyll

Guard Cell

Stoma

Vein

(Xylem and Phloem)

Lower Epidermis

Pollination

• Flowering plants use the wind, insects, bats, birds and mammals to transfer pollen from the male (stamen) part of the flower to the female (stigma) part of the flower.

Fertilization

• Pollen grains germinate on the stigma, growing down the style to reach an ovule.

• Fertilized ovules develop into seeds.

• The carpel enlarges to form the flesh of the fruit and to protect the ovary.

Fruit or Veggies?

With a partner, classify the following:

Cucumbers PotatoTomatoes StrawberryCarrots RadishOrange SquashPumpkin Green peppers

• “Plant behavior”

Hormones • Auxin – causes cell growth towards the sun

• Cytokinins – cause plants to branch and seeds to sprout

• Gibberellins – cause plants to increase in size

• Ethylene – causes fruits to ripen

Tropisms• Gravitropism – roots

grow down, stems grow up

• Phototropism – growth towards light

• Thigmotropism – response to touch

Others…• Photoperiodism –

plants response to periods of light (day and night)

• Winter Dormancy – plants get ready for the winter (stop photosynthesis)

Plant Adaptations…

In spite of being rooted in the ground, plants need to have strategies that allow them the necessary “skills” to survive.

TRUE or FALSE

After each statement, move to the right side on the room for true or the left side for false.

Ready…