BIOL 117: Module 7

Are all plants multicellular organisms?

They are multicellular.

Are all plants eukaryotic?

They are eukaryotic.

In what biological molecule do plants store their metabolic products?

Starch.

Are plants monophyletic?

Yes, they are monophyletic.

What is the recent, common ancestor of the plants?

Algae.

What are the major taxa of land plants?

Plantae.

How has the cuticle been used as an adaptation for green plants to move from aqueous environments to dry land?

Waxy covering to preserve water.

How has the stomata been used as an adaptation for green plants to move from aqueous environments to dry land?

Stomata have pores that allow gas exchange in photosynthetic tissues to retain water when needed.

How have water conducting cells been used as an adaptation for green plants to move from aqueous environments to dry land?

Movement of water and structural strength to fight gravity.

How have gametangia been used as an adaptation for green plants to move from aqueous environments to dry land?

Reproduction without water; produces eggs without drying out the cell.

How have embryophytes been used as an adaptation for green plants to move from aqueous environments to dry land?

Provide placental like nutrients to offspring and prevents them from drying out.

What is the difference between tracheids and vessels elements?

\--Tracheids: ends have pits in secondary cell wall (inside).

\--Vessel elements: ends have gaps through primary and secondary cell.

What is the difference between “anthridia” and “archegonia”?

\--Antheridia: sperm form in. \n --Archegonia: eggs form in.

Be able to describe the process of alternation of generations.

All plants have a Dominant Generation: the one with the longest mean generation time (mean time from birth to reproduction).

Is a gametophyte haploid or diploid?

Haploid

Does a gametophyte produce gametes or spores?

Gametes.

What process of cell division is used to create gametes (mitosis or meiosis)?

Mitosis.

Do gametes become gametophytes or sporophytes?

Gametophytes.

Is a sporophyte haploid or diploid?

Diploid.

Does a sporophyte produce gametes or spores?

Spores.

What process of cell division is used to create spores (mitosis or meiosis)?

Meiosis.

Do spores become gametophytes or sporophytes?

Sporophytes.

What are the two main systems found within land plants?

The roots and shoots.