Pteridoophytes (ferns) - assignment 3

Question 1

what is the habitat of ferns?

Answer 1

moist, shady environments

Question 2

in which aspects are ferns still dependent on water?

Answer 2

• sperm cells still need water for fertilization (to swim to egg)

Question 3

sketch of fern plant

Answer 3

• compound leaf (2n)
• fiddle head (2n)
• rhiozomes (2n)
• leaf stalk (2n)
• adventitious roots

Question 4

which gen does the fern belong to

Answer 4

sporophyte gen because the reproductive organs are found in the lower parts of the fern leaf

Question 5

( look at sketch) identify gen A and B

Answer 5

A- sporophyte gen

B- gametophyte gen

Question 6

name for structure at B

Answer 6

Protallus

Question 7

labels for 1-5

Answer 7

1- spores (n)
2- sperm cell (n)
3- egg cell (n)
4- zygote (2n)
5- developing plant (2n)

Question 8

number of chromosomes for 1,2,4,5

Answer 8

1- 150
2- 150
4- 300
5- 300

Question 9

biological importance of ferns for humans

Answer 9

• aesthetic (woods)
• flower arrangements
• can drink as tea
• leaf juice for digestive system
• built material