Seedless Vascular Plants

Question 1

What are Tracheophytes?

Answer 1

Vascular plants.

Question 2

What are the characteristics of a tracheophyte?

Answer 2

They have true vascular tissue, Lignin. Stems and roots.

Question 3

What are the sporophytes of tracheophytes like?

Answer 3

They are independent, branched, vascular, and photosynthetic.

Question 4

What are the gametophytes of tracheophytes like? Are they vascular?

Answer 4

Reduced role. They do not have vascular tissue.

Question 5

What are Cooksonia?

Answer 5

The oldest vascular plants.

Question 6

What kind of branching do Cooksonia have? Where are there sporangia?

Answer 6

Dichotomous. They have terminal sporangia.

Question 7

What are Rhynia? What kind of branching do they have?

Answer 7

Plant that lived about over 400 million years ago. They have dichotomous branching.

Question 8

What do Rynia have that Cooksonia do not?

Answer 8

Rhizomes and rhizoids.

Question 9

What are the spores in Rynia like?

Answer 9

They are in tetrads.

Question 10

What are Aglaophyton major? What characteristics do they have that are similar to Rynia?

Answer 10

Plant that lived about over 400 million years ago. They have rhizomes and spores in tetrads and dichotomous branching.

Question 11

What do Aglaphyton major have that the other two old plants do not?

Answer 11

Specialized water-conducting tissues, but not true trachids.

Question 12

How are Aglaphyton major similar to Cooksonia?

Answer 12

They have dichotomous branching, terminal sporangia, stomata, and a cuticle.

Question 13

How are Aglaphyton major dissimilar to Cooksonia?

Answer 13

They have horizontal rhizomes, rhizoids, and not true roots or tracheids.

Question 14

What organisms are within the group, Seedless, Vascular plants?

Answer 14

Lychophytes and Pteridophytes.

Question 15

What organisms are within the group, Lychophytes?

Answer 15

Club mosses, spike mosses, quillworts.

Question 16

What organisms are within the group, Pteridophytes?

Answer 16

Ferns, whisk ferns, horsetails.

Question 17

What kind of leaves do Lychophytes have?

Answer 17

Microphylls.

Question 18

What are the characteristics of Microphytes?

Answer 18

Solid, vascular strand. No leaf gap. Usually small.

Question 19

What are the characteristics of Megaphytes?

Answer 19

Have a leaf gap.

Question 20

Do Lychophytes have megaphylls or microphylls?

Answer 20

Microphylls.

Question 21

Do lychophytes have true roots, stems, and leaves?

Answer 21

Yes.

Question 22

What is endosproric development?

Answer 22

The gametophytes remain within spore wall.

Question 23

Is Lycopodium homosporous or heterosporous?

Answer 23

Homosporous.

Question 24

Is Selaginella homosporous or heterosporous?

Answer 24

Heterosporous.

Question 25

What group is Selaginella in?

Answer 25

Lychophytes.

Question 26

Does Selaginella have endosporic development?

Answer 26

Yes.

Question 27

What kind of leaves do Selaginella have?

Answer 27

Microphylls.

Question 28

What is a Lepidodendron?

Answer 28

A tree-sized club moss. Part of the Carboniferous forest.

Question 29

What kind of leaves do ferns have?

Answer 29

Megaphylls.

Question 30

Can fern gametophytes live independently?

Answer 30

Yes.

Question 31

Do Psilotophytes have leaves or roots?

Answer 31

No.

Question 32

What do Psilotophytes have that do photosynthesis?

Answer 32

Stems.

Question 33

What kind of branching do Psilotophytes have?

Answer 33

Dichotomous.

Question 34

Are Psilotophytes homosporous or heterosporous?

Answer 34

Homosporous.