Topic 15: Seedless Vascular Plants

Question 1

Shared derived traits of vascular plants

Answer 1

1. Vascular tissues
2. Life cycle with dominant sporophytes
3. Well developed roots and leaves

Question 2

Vascular tissues evolved exclusivelt in the _____ of vascular plants

Answer 2

Sporophytes

Question 3

____ allowed sporophytes to attain height

Answer 3

Vascular tissues

Question 4

What do gametophytes lack

Answer 4

Vascular tissues

Question 5

Sporophytes in vascular plants are ___, ____ and are _____ from gametophytes

Answer 5

Complex, dominant in size
Independant

Question 6

What do roots in vascular plants aid in

Answer 6

Achoring the plant and facilitating the absorbption of nutrients and watr from the soil

Question 7

What do complex multicellular leaves do to aid the plant

Answer 7

Increase surface area of vascular plant sporophytes to capture more solar energy fr photosynthesis

Question 8

Two types of vascular plant leaves

Answer 8

Megaphylls and microphylls

Question 9

Microphyll

Answer 9

-Small leaves with single veins
- possibly evolved from outgrowths of stems

Question 10

Megaphylls

Answer 10

Large leaves with highly branched vascular systems
Possibly evolved from webbing between flattene branches

Question 11

Vascular plants possess ____ which are modified leaves bearing ______ (spore-producing organs)

Answer 11

Sporophylls
Sporangia

Question 12

Sori

Answer 12

Cluster of sporangia found on the undersides of sporophylls

Question 13

Strobili

Answer 13

Cone like structures formed by groups of sporophylls
Ex- pinecone

Question 14

Do vascular plants have variation in spore size?

Answer 14

Yes

Question 15

Most seedless vascular plants are _____

Answer 15

Homosporous

Question 16

Homosorous

Answer 16

Sporophytes producing a single type of spore that develops into a bisexual gametophyte

Question 17

All seed plants and SOME seedless vascular plants are _____

Answer 17

Hetreospores

Question 18

Hetreosporous

Answer 18

Plants that produce male (microspores) and female (megaspores) gametophyte

Question 19

Seedless vascular plants have ______ which causes a requirement for fertilization

Answer 19

Flagellated sperm

Question 20

Seed plants lack this gamete, what is it?

Answer 20

Flagellated sperm

Question 21

Seedless plants are similar to bryophytes, what kind of habitat would you find them in?

Answer 21

Moist/damp environments

Question 22

In seedless vascular plants, what is dominant

Answer 22

The sporophyte

Question 23

______ in seedless vascular plants are tiny, independant plants growing on or below the soil

Answer 23

Gametophytes

Question 24

Most seedless vascular plants are _____

Answer 24

Homosporous

Question 25

The two classes of seedless vascualr plants

Answer 25

• lycophyta
• monilophyta

Question 26

What do we know about lycophytes

Answer 26

• They used to be big, dominant plants in carboniferous swamps
• became extinct as climate cooled and dried
• surviving lycophytes are small herbaceous plants

Question 27

All lycophytes are ______ and are either ___ or ____

Answer 27

Microphyllous (have small leaves with single viens)
Homo or heterosporous

Question 28

Monilophytes are morphologically _____

Answer 28

Diverse

Question 29

Whisk ferns resemble ____ ____ ______but are closely related to _____ ferns

Answer 29

Ancesteral vascular plants,
Modern

Question 30

Plant characterized by brush-like stems

Answer 30

Horsetails

Question 31

Plants that are secondarily microphyllous

Answer 31

Horsetails

Question 32

Do ferns have microphylls or megaphylls

Answer 32

Megaphylls

Question 33

_____ have spring like structures that catapult spore release

Answer 33

Sporangia

Question 34

Most ferns are _____

Answer 34

Homosporous

Question 35

True or false, lycophytes used to dominant the world and formed the first forests

Answer 35

True