1. Plant Organs
SNC2D

2. Plant Tissues
Recall that a plant is made up of 4 types of tissues:

3. Plant Tissues Recall that a plant is made up of 4 types of tissues:
epidermal
ground
vascular
meristematic

4. Plant Tissues Recall that a plant is made up of 4 types of tissues:
epidermal (the “skin”)
ground (the support)
vascular (the transport)
meristematic (growth)

5. Plant Organs
These tissues group together to form organs that perform special functions.

6. Plant Organs
These tissues group together to form organs that perform special functions.
These organs are the:
roots
stems
leaves
flowers

7. Roots
Roots
anchor the plant in the soil

8. Roots Roots anchor the plant in the soil
collect water and nutrients from the soil

9. Roots Roots anchor the plant in the soil
collect water and nutrients from the soil
store food

10. Roots
The centre of the root is made up of ground and vascular tissue. The root is covered with protective epidermal tissue ending in the root cap, below which is a layer of meristematic tissue, which allows the root to grow.

11. Stems Stems support the leaves and flowers
transport water and nutrients

12. Stems
Again, ground tissue provides the strength and support while vascular tissue transports substances around, and epidermal tissue provides a protective covering, usually secreting a waxy substance known as the cuticle to reduce water loss.

13. Leaves
Leaves
photosynthesize (convert carbon dioxide and water to oxygen and glucose sugar)

14. Leaves
The water and sugar are carried by the vascular tissues. CO2 and O2 (and excess water) enter and exit through openings in the epidermal tissue called stomata.
Most of the leaf is made of a specialized ground tissue called mesophyll, which is where photosynthesis occurs.

15. glucose + oxygen  water + CO2 + energy
Respiration
Note that in order to use the energy stored in glucose for cellular functions, the cells must perform respiration:
glucose + oxygen  water + CO2 + energy

16. glucose + oxygen  water + CO2 + energy
Respiration
Note that in order to use the energy stored in glucose for cellular functions, the cells must perform respiration:
glucose + oxygen  water + CO2 + energy
Remember:
Respiration is NOT breathing.
Plants use oxygen too (usually at night)!

17. Flowers Flowers produce seeds through sexual reproduction
Flowering plants are called angiosperms.

18. To Do Perform the dissection of a flower as outlined on the handout
Answer questions #1 – 5 on page 60