Lab Quiz 1

Question 1

environmental factors that influence plant growth/ evolution

Answer 1

• light
• nutrients
• reproduction/ seed dispersion
• water

Question 2

hydrophytes

Answer 2

• plant that grows only in or on water
• over abundant factor: water
• limiting factor: oxygen

Question 3

mesophytes

Answer 3

• plant needing moderate amount of water (majority plants)
• dependent on environment, but…
• over abundant factor: CO2
• limiting factor: space

Question 4

xerophytes

Answer 4

• plants that doesn’t need a lot of water
• over abundant factor: sunlight
• limiting factor: water

Question 5

monocots

Answer 5

• one cotyledon (embryonic leaf)
• fibrous roots
• parallel veins (vascular bundles)

Question 6

dicots

Answer 6

• two cotyledons (embryonic leaves)
• tap root
• branching veins

Question 7

monocot stems and root microscope images

Answer 7

• stem: scattered vascular bundles

- root: vascular bundles in central ring

Question 8

dicot stems and root microscope images

Answer 8

• stem: vascular bundles in outer ring

- root: vascular bundles in small central cross (in ring)

Question 9

phyllotaxy

Answer 9

• arrangement of leaves on the stem
• simple
• pinnately compound (opposite)
• bipinnately compound (originates from more than one place)

Question 10

types of leaf arrangements

Answer 10

• alternate
• opposite
• whorled (originate/ spiral in the center)

Question 11

leaf venation

Answer 11

• arrangement of veins in a leaf
• parallel (ex. monocots)
• pinnate (opposite)
• palmate (many leaves originate from one point)