Lab IV - Kingdom Plantae: Spore-bearing Plants

Question 1

Alternation of generations

Answer 1

Spore-bearing plants have an alternation of generations where they spend half of their lives in multicellular haploid phase (gametophyte stage) and part of their lives in a multicellular diploid phase (sporophyte stage).
o-Meiosis takes place in the diploid sporophyte to produce haploid spores that grow into the haploid gametophyte, which gives rise to haploid gametes that fuse to form the sporophyte (and repeat)

Question 2

Gametophyte

Answer 2

Gametophytes form multicellular structures that produce male and female gametes.
o-Gametophytes are produced from mitotic division of spores
o-Gametes are haploid (n)

Question 3

Sporophyte

Answer 3

The diploid generation of a plant or alga that has a double set of chromosomes.
o-A sporophyte produces spores by meiosis. These spores develop into a gametophyte and both the spores and the gametophyte are haploid.

Question 4

Archegonium

Answer 4

The female reproductive structure that produce non-motile eggs.

Question 5

Antheridium

Answer 5

The male reproductive structure which produces hundreds of small flagellated sperm that reach the archegonium by swimming.

Question 6

Spore

Answer 6

A reproductive cell that gives rise to individual offspring in plants, fungi, and certain algae and protozoa

Question 7

Vascular tissue

Answer 7

Vascular tissues are specialized for translocation of materials throughout the plant body (i.e., the xylem and phloem)
o-Ferns are true vascular plants, with xylem and phloem extending to all parts of the plant.

Question 8

Xylem

Answer 8

The vascular tissue that conducts water and dissolved minerals (nutrients) in plants.

Question 9

Phloem

Answer 9

The vascular tissue that conducts dissolved sugar and other organic compounds in plants (i.e., the products of photosynthesis).

Question 10

Sorus

Answer 10

In ferns, a cluster of spore-producing sporangia.