biodiversity of plants

Question 1

what are the 5 plant phyla and an example of each

Answer 1

Bryophytes- moss
Pteridophytes- fern
Gymnosperms- pine tree
Angiosperms- flower plants

Question 2

what is the dominant generation of each plant phyla

Answer 2

Bryophytes- gametophyte
Pteridophytes- sporophyte
Gymnosperms- sporophyte
Angiosperms- sporophyte

Question 3

what is the structure of the dominant generation of each plant phyla

Answer 3

Bryophytes- Female and male branches
Rhizoids
Pteridophytes- adventitious roots and compound leaves
Gymnosperms- tap roots, bark and thin leaves
Angiosperms- waxy cuticle, flowers and fruits

Question 4

which plant phyla contain vascular tissue

Answer 4

bryophytes
gymnosperms
angiosperms

Question 5

which plant phyla have true roots, stems and leaves

Answer 5

bryophytes
gymnosperms
angiosperms

pteridophytes have a thallus structure

Question 6

which phyla have spores/ seeds

Answer 6

pteridophytes- spores
bryophytes- spores
gymnosperms- seeds
angiospersm- seeds

Question 7

how are phyla dependant on water

Answer 7

pteridophytes- dependent
bryophytes- minimal
bryophytes- n/a
angiosperms- n/a

Question 8

what are the differences between gymnospersm and angiosperms

Answer 8

Non-flowering - flowering
Naked seeds - seeds enclosed in fruit
Have cones - have ovaries
Wind pollination only - multiple pollination vectors

Question 9

what are the differences between asexual and sexual reproduction

Answer 9

1 parent involved - 2 parents involved
No gametes - gametes
No genetic variation (offspring is identical) - genetic variation

Question 10

what are the advantages of asexual reproduction

Answer 10

Only one plant is needed
Offspring will be as genetically adapted to its environment as the paren
Agents of pollination not required
New plants are produced faster

Question 11

what are the disadvantages of asexual reproduction

Answer 11

Weak parents will produce weak offspring
Changes to the environment will affect all species of a plant

Question 12

what are the advantages of sexual reproduction

Answer 12

Offspring will be genetically differentiated
Allows offspring to adapt to an environment
May lead to a new species

Question 13

what are the disadvantages of sexual reproduction

Answer 13

Slow process
Males and females are required
Mutations may occur
Pollination agents are required