chp 28 seedless vascular plants

Question 1

major divisions of Seedless, Vascular Plants

Answer 1

lycophyta (club mosses and spike mosses), Pterophyta (ferns and horsetails)

Question 2

More structurally and reproductively complex because why

Answer 2

because they have true roots, stems, leaves, lignin

Question 3

what do roots do for the plant?

Answer 3

transport water and minerals and help anchor plant

Question 4

What percent of modern plants are vascular

Answer 4

90%

Question 5

Xylem

Answer 5

transport water and nutrients

Question 6

Phloem

Answer 6

transport sugar and amino acids

Question 7

Seedless vascular plants also have lignin which is what

Answer 7

wood

Question 8

what are the leaves used for?

Answer 8

increase of surface area for sunlight and gasses

Question 9

what are the two major types of leaves?

Answer 9

Microphylls and Megaphylls

Question 10

Microphylls

Answer 10

single vein (came first)

Question 11

Megaphylls

Answer 11

highly branched

Question 12

Sporophylls

Answer 12

leaves modified with sporangia

Question 13

Sori

Answer 13

clusters on the underside of sporangia

Question 14

Stobilli

Answer 14

cone-like structures formed from sporophylls

Question 15

Homosporous

Answer 15

most seedless vascular are this, meaning they have only 1 different type of spore that could be male or female. this develops into a bisexual gameto

Question 16

Heterosporous species produce

Answer 16

megaspores (female gameto) and microspores (male gameto)

Question 17

Division Lycophyta

Answer 17

usually moist environ, retains flagellated sperm which means its water dependant gameto

Question 18

Is division lycophyta a true moss

Answer 18

no

Question 19

1st to exhibit what type of vascular tissue?

Answer 19

xylem and phloem

Question 20

Lycophyta Life cycle

Answer 20

similar setup, but sporo dominant and increased complexity, gameto tiny, often lives independently at surface, Strobilus same from equistem,

Question 21

Division Pterophyta

Answer 21

true ferns, 12,000 species most of which live in the tropics, usually live in damp areas and grows horizontally (asexually) to drier areas using rhizomes

Question 22

asexual reproduction can occur without ___

Answer 22

water

Question 23

Division Pterophyta

Answer 23

true ferns, 12,000 species most of which live in the tropics, usually live in damp areas and grow horizontally (asexually) to drier areas using rhizomes