Plant cells Flashcards
Broad categories of modern plants
Nonvascular and vascular
Present only in vascular plants. Tissue specialized for the transport of water and solutes through a plant
Vascular tissue
These include mosses, liverworts, and other related plants
Nonvascular plants
Nonvascular plants have ______ instead of roots, flat broad tissues that contain chloroplasts like leaves
rhizoids
More than 90% of modern plants are _______
Vascular plants
Most vascular plants have leaves that are covered with and are also provided with pores for gaseous exchange
Cuticle
The size of the leaf pores in vascular plants are controlled by special cells called
Guard cells
There are about ______ known species of plants on Earth
500, 000
The cell walls of new plants are harder because of the compound ____
Lignin
Protects plants from winter’s cold. Other produce antifreeze compounds.
bud scales
Vascular plants produce either to reproduce
spores or seeds
A protective structure that contains a plant embryo and stored food.
Seed
The more recent classification of plants is based on the use of _______
Biochemistry and molecular biology
10 divisions of plants
Marchantiophyta (liverworts), Anthocerotophyta (hornworts), Bryophyta (mosses),
Filicophyta (ferns),
Cycadophyta (cycads),
Sphenophyta (horsetails),
Pinophyta (conifers),
Ginkgophyta (ginkgo)s,
Gnetophyta (gnetophytes)
Magnoliophyta (Angiosperms)
Include all nonvascular plants: the other 9 include vascular plants
Bryophyta
The Bryophyta includes three classes:
Mosses, liverworts, and hornworts
The vascular plants are classified into _______
Seedless plants (ferns) and seed plants
Seed plants are divided into
gymnosperms and angiosperms
Producing seeds that lack a protective fruit
Gymnosperms
Produced seeds enclosed and protected by a fruits
Angiosperms
Flowering plants
Angiosperms
Angiosperms with only one cotyledon
Monocots
Angiosperms with two cotyledon
Dicots
A series of organisms through which energy moves, in the form of foods.
Food chain
Scattered with hair-like structures
Monocot roots
Ability to grow deep and without hair-like structures
Dicot roots
Function of Plants
Source of food and materials
Human diet include plants
Use to make cotton and rope
Produce wood for building houses and paper
Use in spices and coffee
In sexual reproduction, the two kinds of gametes are produced by the mosses
Egg and sperm
The egg producing organ of moss is called an
Archegonium
The sperm producing organ of moss is called
Antheridium
Fertilization produces a blank that undergoes mitosis and become a sporophyte
Zygote
In asexual reproduction, there are two ways by which mosses reproduce asexuality
Fragmentation and Gemmae production
Occurs when small pieces break from a gametophyte and grow into a new plant
Fragmentation
Are tiny pieces of tissue that can form new gametophyte
Gemmae
A kind of moss that form peat bogs, converts a pond into marshy soil
Peat moss
Wet ecosystem that is home to many interesting organisms like the carnivorous plants
Peat bog
The name was given because of a belief of people in medieval times that the plant could cure liver disease
Liverworts