Seedless Plants

Question 1

Adaptations for living in land

Answer 1

A waxy cuticle to protect against water loss and stomata for gas exchange. Alternation of generations: gametophyte and sporophyte generations.
Gametangia with a protective jacket of sterile cells surrounding the gametes: antheridia (sperm cells) and archegonia (eggs).

Question 2

Xylem

Answer 2

To conduct water and dissolved minerals.

Question 3

Phloem

Answer 3

To conduct disolved sugar.

Question 4

Bryophytes

Answer 4

Unlike other plants they are nonvascular and lack xylem and phloem; the only ones with a dominant gametophyte generation.

Question 5

Seedless vascular plants

Answer 5

They have vascular tissues and a dominant sporophyte generation. Reproduction depends on water.

Question 6

Homospory

Answer 6

The production of one kind of spores, they give rise to gametophyte plants that produce both egg and sperm cells.

Question 7

Heterospory

Answer 7

The production of two kinds of spores, (microspores or megaspores).