Plant Stuff

Question 1

Angiosperms

Answer 1

Flowering plates

• largest group of land plants
• most diverse plants on earth
• several groups like monocots and eudicots

-angiosperms co-evolved with pollinators

Question 2

Angiosperm adaptations

Answer 2

Efficient transport of water and nutrients
-vessel elements(more efficient than tracheids)
-more efficient phloem
Double fertilization
-produces embryo(diploid) and endosperm(triploid)
Ovary protects ovule
-develops from carpel, turns into fruit

Question 3

The most important adaptation that allowed gymnosperms to reproduce without water is the evolution of?

1) seed
2) vasculature and leaves
3) pollen and ovule
4) small gametophyte

Answer 3

3)pollen and ovule

Question 4

In gymnosperms, after landing on the ovule, the pollen achieves fertilization by…

Answer 4

Producing a pollen tube to carry the sperm cells to the egg cell

Question 5

Gymnosperms-

Answer 5

Vascular seed plants

Have vasculature and naked seeds

Question 6

Gymnosperm dominant phase?

Answer 6

Sporophyte

Question 7

Ovary develops into the…

Answer 7

Fruit

Question 8

Phylum coniferophyta

Answer 8

Conifers

• most common gymnosperms
• pines spruces and firs
• woody reproductive cones

Most are evergreen(shed some but not all leaves each year)

• needle leaves
• many produce resins that have multiple uses
• great economic value, timber and paper

Question 9

Cuticle

Answer 9

On top

Question 9

Stomata

Answer 9

More on the bottom, less on the top

Question 10

Life evolved on land

Answer 10

500 million years ago

And in the seas 3.5bya

Question 11

Cuticle

Answer 11

Land plants
Protects from drying out
Protects from pathogen attack
Fossil record shows cuticle in early land plants encasing spores

Question 12

Tracheids

Answer 12

Vascular plants
Gymno and angio
Closely packed elongated cells
Cells die after maturity
Thickened secondary cell walls with lignin deposits
Better structural support

Question 13

Vessels

Answer 13

Angiosperms only
Similar to trachieds
Both walls have gaps in them, more efficient water transport

Question 14

Stomata was already there in mosses(non vascular) t or f

Answer 14

True

Question 15

Vascular tissue with lignified cell and leaves evolved in

Answer 15

Lycophytes

Seedless vascular

Question 16

Non swimming sperm(pollen) and seed evolved in

Answer 16

Gymnosperms(vascular seed plants)

Question 17

Root systems evolved after

Answer 17

Vasculature

Question 18

Alternation of generation adaptations are driven by

Answer 18

Scarcity of water
Plants have evolved to maintain their diploid phase as dominant
Helps protect gamete and embryo

Question 19

Spores,pollen grains and seeds are all extremely adapted to___ conditions and wait for___growth conditions

Answer 19

Dry, favorable