Lec 7- Seedless Plants 2: Seedless Vascular Plants

Question 1

Traits of vascular plants

Answer 1

Vascular tissues called xylem and phloem
well developed roots and leaves

Question 2

Lignin in vascular tissue provide

Answer 2

structural support

Question 3

Xylem

Answer 3

conducts most of the water and minerals

Question 4

Phloem

Answer 4

distributes sugars, amino acids, and other
organic products

Question 5

Roots are organs that

Answer 5

anchor vascular plants
* absorb water and minerals from the soil
* store organic molecules
– Roots contain vascular tissue
– Rhizoids DO NOT contain vascular tissue

Question 6

Leaves are organs that

Answer 6

increase the surface area
for photosynthesis
contain CONTAIN
VASCULAR TISSUE
Once plants get tall,
compete for light

Question 7

Horsetails

Answer 7

Horsetails were diverse during the Carboniferous
period, but are now restricted to the genus Equisetum
* Sporangia clusters in cones, make spores
* Live in water-logged soils

Question 8

Ferns

Answer 8

Ferns are the most widespread seedless vascular
plants, with more than 12,000 species
* They are most diverse in the tropics but also thrive in
temperate forests

Question 9

Ferns have rhizomes

Answer 9

underground stems
asexual reproduction

Question 10

New fern shoots emerge from the rhizome curled up

Answer 10

fiddleheads

Question 11

Sporangia in ferns are found in clusters called

Answer 11

“sori” (singular “sorus”) on the
underside of leaves