Examples: Polytrichum & Funaria (2/4)

Question 1

Center of axis contains what?

Answer 1

Hydroids (water-conducting cells), surrounded by Leptoids (food-containing cells).

Question 2

What happens to the tips of some branches?

Answer 2

Become fertile, producing sex organs.

Question 3

Type of reproduction?

Answer 3

Oogamous

Question 4

Antheridia & archegonia are…? Gametes are…?

Answer 4

Multicellular.

Gametes are covered by sterile cellular layer.

Question 5

Archegonia have:

Answer 5

Long necks composed of six rows of cells.

Question 6

Male apexes are enclosed by:

Answer 6

enclosed by leaves forming a cup about the sex organs.

Question 7

During dew or rainfall, what happens?

Answer 7

Motile biflagellate** **sperm reach the egg in the mature archegonium through the archegonial neck.

Question 8

What is fertilization followed by?

Answer 8

Formation of zygote

Question 9

What does the zygote develop into?

Answer 9

Forms a sporophyte (2N) which is retained on the parent gametophyte.

Question 10

Young sporophyte depends on what?

Answer 10

depends on gametophyte until it becomes chlorophyllous; still partially dependent on gametophyte for nutrients.