TAMU Bio 112 Chapter 25 Seedless
Plants Questions and Answers.
When did land plants originate - Answer 470 million years ago
What phylum are lands plants in - Answer Archaeplastida
plants share a common ancestor with what? - Answer charophytes (green algea)
what supergroup are land plants in - Answer Archaeplastida of eykaryotes
what are the green algae shared characteristics - Answer multicellularity
cell walls made with cellulose
chloroplasts with the same pigments (chlorophyll a&b)
storage molecule is starch
what is desiccation - Answer drying out of a plant
what are the two things of a plant that must be protected form desiccation - Answer gametes
and zygotes
from water to land what did plants need to develop - Answer structural support with a
medium in a medium that does not give the same lift as water
from water to land what had to happen with plant reproduction - Answer new strategies for
male gametes to reach the female gametes
what are the advantages of land - Answer higher CO2 concentration
higher light intensity
more minerals
no "herbivores"
no competition
what adaptation occurred from water to land - Answer alternation of generations
apical meristem
, waxy cuticle
lignin
What is the apical meristem? - Answer tissue in roots and shoots
what does the waxy cuticle do - Answer resist desiccation
what does lignin do and where is it located - Answer cell walls and supports structures off the
ground
charophyte life cycle - Answer - only multicellular is haploid
- zygote does meiosis to produce only 4 diverse offspring
spores - Answer walled haploid cells
dispersal thru air
where are spores produced - Answer sporangium
what protects spores - Answer sporopollenin
gametangia - Answer A reproductive organ that houses and protects the gametes of a plant in
antheridium
where is the egg protected - Answer archegonium
where does fertilization occur and formation of a zygote - Answer archegonium
apical meristems - Answer -continuously dividing cells
-roots and shoots grow toward resources
waxy cuticle - Answer A waterproof barrier that protects the leaf and prevents water loss
stops desiccation
what do pores do - Answer allow CO2 and O2 exchange
Plants Questions and Answers.
When did land plants originate - Answer 470 million years ago
What phylum are lands plants in - Answer Archaeplastida
plants share a common ancestor with what? - Answer charophytes (green algea)
what supergroup are land plants in - Answer Archaeplastida of eykaryotes
what are the green algae shared characteristics - Answer multicellularity
cell walls made with cellulose
chloroplasts with the same pigments (chlorophyll a&b)
storage molecule is starch
what is desiccation - Answer drying out of a plant
what are the two things of a plant that must be protected form desiccation - Answer gametes
and zygotes
from water to land what did plants need to develop - Answer structural support with a
medium in a medium that does not give the same lift as water
from water to land what had to happen with plant reproduction - Answer new strategies for
male gametes to reach the female gametes
what are the advantages of land - Answer higher CO2 concentration
higher light intensity
more minerals
no "herbivores"
no competition
what adaptation occurred from water to land - Answer alternation of generations
apical meristem
, waxy cuticle
lignin
What is the apical meristem? - Answer tissue in roots and shoots
what does the waxy cuticle do - Answer resist desiccation
what does lignin do and where is it located - Answer cell walls and supports structures off the
ground
charophyte life cycle - Answer - only multicellular is haploid
- zygote does meiosis to produce only 4 diverse offspring
spores - Answer walled haploid cells
dispersal thru air
where are spores produced - Answer sporangium
what protects spores - Answer sporopollenin
gametangia - Answer A reproductive organ that houses and protects the gametes of a plant in
antheridium
where is the egg protected - Answer archegonium
where does fertilization occur and formation of a zygote - Answer archegonium
apical meristems - Answer -continuously dividing cells
-roots and shoots grow toward resources
waxy cuticle - Answer A waterproof barrier that protects the leaf and prevents water loss
stops desiccation
what do pores do - Answer allow CO2 and O2 exchange
