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Science Seed Plants Section 3 notes
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36
Science
7th Grade
02/07/2012

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Term
What are some characteristics of seed plants?
Definition
have leaves, stems, roots, and vascular tissue reproduce by seeds, which contain an embryo and stored food
Term
What do leaves do?
Definition
trap light and make food through photosynthesis
Term
a thin layer of cells on the upper and lower surfaces of a leaf
Definition
epidermis
Term
Leaves may have something coating the epidermis called...
Definition
a cuticle
Term
small openings in the epidermis that allow carbon dioxide, water, and oxygen to enter and exit a leaf
Definition
stomata
Term
What is each stoma surrounded by?
Definition
2 guard cells and air
Term
contains chloroplasts where most food is made
Definition
palisade layer
Term
loosely arranged cells and air
Definition
spongy layer
Term
What allows the movement of materials between leaves and roots
Definition
stem
Term
Stems are usually where?
Definition
above ground
Term
Stems do what?
Definition
support the branches, leaves and flowers
Term
Stems may do what?
Definition
store food
Term
soft and green
Definition
herbaceous stems
Term
What are woody stems?
Definition
hard, rigid, and you'll never believe it... woody
Term
What do roots collect water and nutrients from?
Definition
da ground
Term
What anchors plants so that they dont blow away?
Definition
roots
Term
Roots can sometimes do what?
Definition
store food or water
Term
transports water from the roots throughout the plant
Definition
xylem tissue
Term
moves food from where it is mae to other parts of the plant
Definition
pholem tissue
Term
produces new xylem and phoem cells
Definition
canblum plants
Term
vascular plants that produce seeds that are not protected by fruit
Definition
gymnosperms
Term
Gymnosperms dont have what?
Definition
flowers
Term
How are leaves on Gymnosperms, the oldest type of trees?
Definition
needlelike or scalelike
Term
What are the 4 divisons?
Definition
Conifers, cycads, ginkgoes, and gnetophytes
Term
how do conifers reproduce?
Definition
by male and female cones
Term
vascular plants that flower and have fruit that contains seeds
Definition
angiosperms
Term
On Angiosperms, fruit develops from what?
Definition
flowers
Term
What does most fruit contain?
Definition
seeds
Term
have one cotyledon used for food storage inside their seeds
Definition
monocots
Term
have 2 cotyledons inside their seeds
Definition
dicots
Term
the plants life cycle is copleted within one year
Definition
annual
Term
the plants life cycle is completed in 2 years
Definition
biennial
Term
takes more than 2 years to grow to maturity
Definition
peremial
Term
What depends on seed plants?
Definition
human life?
Term
What comes from conifers?
Definition
wood for construction and paper products
Term
Angiosperms form the basis of diets for who?
Definition
most animals and humans
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