Kingdom Plantae: evo

Question 1

What is something all plants have in their cell wall?

Answer 1

cellulose

Question 2

5 benefits for plants moving to land

Answer 2

1. more room to spread out
2. nothing to eat them
3. direct contact with sunlight
4. access to CO2
5. nutrient rich soil

Question 3

2 negatives for plants moving to land

Answer 3

1. no strutural support

2. drying out (water inside plant gives structural support as well)

Question 4

4 key derived traits found in plants but not in charophytes

Answer 4

1. apical meristems
2. alternation of generation (with dependant embryos)
3. multicelular gametangia
4. sporangia

Question 5

name of female and male gametangia

Answer 5

female: archegonia
male: antheridia

Question 6

what is alternation of generation?

Answer 6

Alternation of generation is when every generation you alternate between an adult who is haploid and an adult who is diploid.
-process in which 2 multicellular bodies alternate

Question 7

What are the stages of alternation of generation in plants?

Answer 7

Sporophyte -> sporangia -> spore -> gametophyte -> gametangia -> gametes (fertilization) -> zygote -> sporophyte

Question 8

why are land plants called embryophytes?

Answer 8

Because of the dependance of the embryo on the parent plant

Question 9

meiosis produces … spores

Answer 9

haploid

Question 10

what do spore walls contain, what does this do?

Answer 10

sporopollenin

- it is resistant to dehydration

Question 11

what is a spore?

Answer 11

a haploid reproductive cell that can develop into a new organism without fusing with another cell

Question 12

what are 2 additional derived traits that most land plants have? what is their function?

Answer 12

1. cuticle –> to prevent excess water loss

2. stomata –> to perform gas exchange