lab 8: seed plants

Question 1

seed plants?

Answer 1

vascular tissue, have pollen grains, & make seeds, which consist of an embryo & a store of nutritive tissue, surrounded by a tough protective layer

Question 2

monophyletic groups that define seed plants?

Answer 2

gymnosperms & angiosperms; defined by the production of seeds & pollen grains

Question 3

gymnosperms?

Answer 3

seedless vascular plants that have “naked seeds” (exposed)

Question 4

what are the female & male parts of the flower?

Answer 4

female: ovary, style, stigma
male: filament & anther

Question 5

4 major groups of gymnosperms?

Answer 5

cycadophyta (cycads), ginkgophyta (ginkgos), confirephyta (pines, spruces & firs), gnetophyta (gnetophytes)

Question 6

cycadophyta (cycads)

Answer 6

-heterosporous vascular seed plants
-flagellated (swimming) sperm confined within a pollen tube

Question 7

ginkgophyta (ginkgos)

Answer 7

-only 1 species is alive today (ginkgo biloba)
-dioecious
-males are usually planted b/c females are stinky
-swimming sperm

Question 8

coniferophyta (conifers- pines, spruces, firs)

Answer 8

-most abundant trees
-monoecious
-wind-pollinated
-microsporophyll: scale of microspores (male cones; short lived & grows on lower branches)
-megasporophyll: scale of megaspores (female cones; grows on upper branches)

Question 9

gnetophyta (gnetophytes)

Answer 9

-70 species
-closest relative to angiosperms

Question 10

micro & mega spores?

Answer 10

-microspores (male cones) -> form male gametophyte
-megaspores (female cones) -> form female gametophyte

Question 11

monocious?

Answer 11

sexes are separate on the same plant

Question 12

dioecious?

Answer 12

separate male & female plants

Question 13

angiosperms?

Answer 13

flowering plants include carpel “covered seeds”

Question 14

phylum anthophyta (angiosperms)

Answer 14

-most abundant, diverse species of land plants
-grasses, orchids, daises, oaks, maples & roses
-adaptations allow angiosperms to transport water, pollen, & seeds efficiently
-dominant form of plant: flower & fruit
-sporophyte= large & heterosporous
-2 major groups: monocots & eudicots

Question 15

monocots

Answer 15

parallel veins in leaves

Question 16

eudicots

Answer 16

branching veins in leaves