1. KEY CONCEPT Plants have specialized cells and tissue systems.

2. Plant tissues are made of three basic cell types.
Parenchyma cells are the most common plant cell type.
store starch, oils and water
help heal wounds to the plant
have thin flexible walls

3. Collenchyma cells provide support to a growing plant.
they are strong and flexible.
celery strings are strands of collenchyma.
they have unevenly thick cell walls.

4. Sclerenchyma cells are the strongest plant cell type.
second cell wall hardened by lignin
die when they reach maturity
used by humans to make linen and rope
makes up the hard or gritty part of a fruit or vegetable

5. Plant organs are made of three tissue systems.
Dermal tissue covers the outside of a plant.
protects the plant
secretes cuticle of leaves
forms outer bark of trees

6. Ground tissue is found inside a plant.
provides support
stores materials in roots and stems
most commonly made of parenchyma

7. Vascular tissue transports water, minerals and organic compounds.
stem
leaf
root
two networks of hollow tubes
xylem transports water and minerals
phloem transports photosynthetic products

8. Which type of cell is found in the hard or gritty parts of fruits and vegetables?
Collenchyma
Sclerenchyma
Parenchyma
Plasmodesmata

9. Plant cells that have thin walls and store starch, oils, and water are
Parenchyma
Collenchyma
Sclerenchyma
Vascular cells

10. Dead parenchyma cells that make up bark form a type of
Collenchyma tissue
Vascular tissue
Dermal tissue
Ground tissue

11. A plant’s ground tissue is found
In its outer layer
Only in its leaves
Above the ground
Throughout the plant

12. Water and dissolved minerals are carried from the roots to the rest of the plant by the
Dermal tissue
Ground tissue
Xylem
Phloem