Chapter 24-25 Plants Internal and External Structure

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What are the 2 types of vascular tissue in plants?
- Xylem
- Phloem
What are the 4 tissues of plants?
- Meristematic
- Vascular
- Dermal
- Ground
What do each tissue of the plant do?
- Meristematic- reproduction
- Vascular- transport
- Dermal- protection
- Ground- storage
What does xylem do?

Xylem transports water and minerals up to the stem.
What does phloem do?

Phloem transports food to the roots.
What is the function of root hairs?

Root hairs are extensions of epidermis cells that increase surface area for absorption of water and mineral salts. (No cuticle)
What is the function of endodermis?

Controls movement of water and minerals from ground tissue into xylem.
What is a cotyledon?

Cotyledon: first leaf to appear in germination.
What are the differences between herbaceous dicot stems and herbaceous monocot stems?
- Monocots have one cotyledon, is parallel and vascular bundles are scattered.
- Dicots have 2 cotyledons, is netted and vascular bundles are in a ring.
What is a vascular bundle made up of?
- Bundle sheath
- Phloem
- Xylem
Why is a leaf blade very thin?

To trap sun light and allow gaseous exchange.
What are the 7 labels of a leaf diagram?
- Axillary bud
- Node
- Petiole
- Leaf blade
- Midrib
- Veins
- Stem
What does sessile mean?

No leaf stalk
What is the opposite of a sessile?

Petiole ( leaf stalk )
What are the 2 leaf types?
- Simple eg. oak
- Compound (lamina divided into a number of leaflets) eg. horsechestnut
What is a compound leaf?

Lamina divided into a number of leaflets. eg. Horsechestnut
What are the 2 types of leaf venation?
- Netted (Reticulate)
- Parallel

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Chapter 24-25 Plants Internal and External Structure

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2021-05-03T16:58:00Z