Lab Ex 29 Survey of the Plant Kingdom - Seedless Vascular Plants

Question 1

Sporophylls

Answer 1

leaflike structures of the sporophyte generation that bear spores

Question 2

Megaphylls

Answer 2

large leaves with several to many veins

Question 3

Microphylls

Answer 3

smaller leaves with one vein

Question 4

Sporangia

Answer 4

form on sporophylls; where spores are produced by meiosis

Question 5

Rhizomes

Answer 5

fern sporophytes grow indefinitely via underground stems called these

Question 6

Sori

Answer 6

sporangia aggregated into clusters

Question 7

Indusium

Answer 7

in some ferns, like the marginal woodfern, each sorus is covered by a flap of leaf tissue called this; specialized outgrowth of a frond

Question 8

Stalk

Answer 8

stem; AKA stipe of a fern

Question 9

Blade

Answer 9

AKA lamina; leafy part of a fern frond (minus the stalk/stem)

Question 10

Pinnae

Answer 10

Individual leaflet of a fern frond

Question 11

Protonema

Answer 11

fern spores germinated and form a threadlike structure called this

Question 12

Prothallium

Answer 12

subsequent cellular divisions produce an independent, heart-shaped structure also known as a valentine plant

Question 13

Fiddlehead

Answer 13

fronds of the growing sporophyte break through the soil in a coiled position called this; considered a culinary delicacy in some parts of the world

Question 14

Homosporous

Answer 14

most terrestrial ferns are this; they produce 1 kind of spore that develops into a single kind of gametophyte that produces both antheridia and archegonia

Question 15

Heterosporous

Answer 15

aquatic ferns (Salvinia, Azolla) are this; produce 2 types of spores - megaspores and microspores

Question 16

Megaspore

Answer 16

forms a gemetophyte with only 1 archegonia

Question 17

Microspore

Answer 17

forms a gametophyte with only 1 antheridia

Question 18

Sporangiophores

Answer 18

sporangia form atop umbrellalike modified branches called these

Question 19

Strobilus (pl. strobili)

Answer 19

structure present on many land plant species consisting of sporangia-bearing structures densely aggregated along a stem; AKA cones

Question 20

Rhizopores

Answer 20

unusual runnerlike organ at the branching points along the stem of Isoetes; proplike axes that have structural features that are intermediate between stem and roots

Question 21

Annulus

Answer 21

single row of specialized cells on the outer rim of a fern sporangium that serves in spore dispersal