Download Chapter 22: Plant life cycle LIFE CYCLE

Chapter 21: Plant anatomy
CELLS:
Parenchyma cells: Make up bark and form dermal tissue
Collenchyma cells: Provide support while allowing the
plant to grow.
Sclerenchyma cells: have a second cell wall that is
strengthened with lignin
TISSUES:
Dermal tissue: Makes up the outside of the plant (bark)
Ground tissue: found throughout the plant,
Vascular tissue: transports materials through the plant
~Xylem: transports water and dissolved minerals
~Phloem: transports photosynthetic products (sugar)
ROOT:
Root hairs help to anchor the plant and absorb water and
minerals by increasing the surface area.
Fibrous roots:
Tap roots:
Primary growth is growth in length
Secondary growth is growth in width
Root cap: protects the tip of the root
STEM:
Provides support, transports water and minerals, and
stores food and water.
Chapter 22: Plant life cycle
LIFE CYCLE:
Alternation of generations: sporophytes become
spores through meiosis. Spores become
gametophytes through mitosis. Gametophytes
become gametes through mitosis.
Gametophyte dominant: nonvascular plants
Sporophyte dominant: vascular plants
~Conifer is a pine tree
~~Two different types of cones (male and
female)
FLOWERS:
Outside layer of modified leaves are called
sepals and the inside are called petals.
Pollination:
~Wind is large amounts of pollen
~Animal is colorful petals
Male part of flower is called stamen
~contains filament and anther
~anther is where pollen is
Female part of flower is called car pel
~contains stigma, style, and ovary
Double fertilization is where one sperm
fertilizes an egg and another sperm forms a
triploid cell
Mature ovary is called fruit
LEAF:
Blade: broad flat part of a leaf
Mesophyll does most of the photosynthesis in the plant
Upper surface of the leaf is for gathering light
Under surface of the leaf is where the guard cells are.
They deflate to close the stomata and inflate to open the
stomata.
Questions from other chapters
Adaptations for cold or hot weather are needles
Chapter 2 adhesion
TREE:
Tree rings = 1 year of growth. Thick ring due to lots of
water and thin ring due to little water.
chapter 2 enzyme needs to have a specific
temperature and pH
chapter 3 phospholipid is made of a polar
head and a non polar tail
chapter 3 exocytosis is where something
exits the cell
chapter 3 transport proteins =
facilitated diffusion