Bio Lab Exam Flashcards
Why did ardipithecus supposedly not walk on his knuckles?
The metacarpel and carpel bones in the hands and wrists were not strong which indicated he could not of walked on them
Prognathism
The extent to which the face and jaw protrude
- Apes are more prominent, more internalized in humans
Sagittal Crest
Thin ridge of bone atop the braincase
-attachment site for the temporalis muscle in apes
Foramen Magnum
Large opening at the base of the skull where the spinal cord passes
- More towards the rear in apes
What period is the Burgess Shale from?
Cambrian Period
What is the new name for Bathygnathus Borealis?
Dimetrodon Borealis
Why isn’t Dimetrodon considered a dinosaur?
It has a single large hole behind the eye socket (temporal fenestral) and dinosaurs have two
Monocots
- One cotyledon in seed
- Root xylem and phloem in ring
- Vascular bundles in distinct rings
- Leaf veins form a parallel pattern
- Flower parts in three or multiples of three
Eudicots
- Two cotyledons in seed
- Root phloem between arms of xylem (X shape)
- Vascular bundles in distinct rings
- Leaf veins form a net pattern
- Flower parts in fours or fives and their multiples
3 types of root tissues
- Dermal Tissue
- Ground Tissue
- Vascular Tissue
Epidermis Tissue (Dermal)
- Root hairs absorb water & minerals
- Stem protects inner tissue
- Leaves protect against H20 loss
- Outermost tissue
Ground Tissue (Cortex, Pith, Mesophyll)
- Roots store products of photosynthesis (cortex)
- Stems carry on photosynthesis (cortex)
- Stems store products of photosynthesis (pith)
- Leaves perform gas exchange (mesophyll)
Vascular Tissue (xylem & phloem)
-Roots, stems, and leaves transport water and nutrients
Taproot System
-Large main root and smaller secondary roots coming off of it
Fibrous Root System
-Primary and secondary roots are similar in size
Primary growth
Growth in length
