Lab terminology Flashcards
Internal Leaf structures
Upper and lower epidermis
Spongy and palisade mesophyll
Vascular bundles
Root structures
- Epidermis
- Cortex
- Endodermis
- Stele (w/ vascular tissue)
types of roots
tap root (dicots)
fibrous roots (monocots)
Leaf Arrangement (LM)
Alternate (one leaf at a time on alternating sides)
Opposite (two leaves come from same point on opposite sides)
Whorled (bunches of leaves form same points moving upward)
Basal (leaves on at the base of the plant)
Form (LM)
Simple (maple leaf, single leaf growing form a stem)
Pinnately compound (lots of leaves (spiny))
Palmately compound (three leaves at the end of a stem(fingers from a palm))
Margin (LM)
Entire (long oval, full leaf)
Toothed (serrated along the edges of the leaf)
Lobed (maple leaf)
Dissected (deeply lobed)
Vennation (LM)
Parallel (lily leaves, full long striations)
Palmate (maple leaf, branching)
Pinnate (equal and many on both sides)
Stipules (LM)
Present (small appendage found in pairs at the base of leaves)
Absent
What are Bracts ?
are modified leaves associated with the flowers
What is an Awn?
bristle sticking out
Monocot flower Characteristics
Monocots have one seed,
flower petals in multiples of 3,
fibrous roots,
long thin leaves with parallel veins,
lack secondary growth,
and its vascular bundle is scattered.
Dicot vs Monocot Roots
Monocot roots have scattered vascular bundles within the ground tissue.
Dicot roots have a dense central core arrangement of vascular bundles.
most flowering plants are ?
Dicots
Rice vs corn flowers?
Rice:
- rice flower (or spikelet) is bisexual,
- typically arranged in a panicle, a branched inflorescence.
Corn:
- unisexual flower
- The tassel produces pollen, which is carried by the wind to the silks (female flower parts) on the ear.
- lacks branching, has tassal and ear
Grass Sheath Structure ?
- Ligule: membranous flap that keeps dirt and water out of sheath
- A closed sheath would be closed al the way around the stem
- Open sheath comes down to an opening
