Ch. 29.3—Plant Diversity I: How Plants Colonized Land Flashcards
______ ______ allowed plants to grow tall.
-Vascular tissue.
Living vascular plants are characterized by all of the following EXCEPT:
A) Life cycles with dominant sporophytes.
B) Life cycles with dominant gametophytes.
C) Vascular tissues called xylem and phloem.
D) Well-developed roots and leaves.
B) Life cycles with dominant gametophytes.
Vascular plants have two types of vascular tissue: ______ and ______.
- Xylem
- Phloem
______: conducts most of the water and minerals and
includes tube-shaped cells called tracheids.
-Xylem.
Water-conducting cells are strengthened by _____ and
provide structural support
-Lignin.
______: has cells arranged into tubes that distribute sugars, amino acids, and other organic products.
-Phloem.
Leaves are categorized by two types: ______ and _______.
- Microphylls.
- Megaphylls.
______: leaves with a single vein.
-Microphylls.
________: leaves with a highly branched vascular system.
-Megaphylls.
_______: are modified leaves with sporangia.
-Sporophylls.
_____: are clusters of sporangia on the undersides of sporophylls.
-Sori.
______: are cone-like structures formed from groups of sporophylls.
-Strobili.
Most seedless vascular plants are ________, producing one type of spore that develops into a bisexual gametophyte.
-Homosporous.
All seed plants and some seedless vascular plants are ________.
-Heterosporous.
Heterosporous species produce ________, which give rise to female gametophytes, and _________, which give rise to malegametophytes
- Megaspores.
- Microspores.
