Get ahead with a $300 test prep scholarship
| Enter to win by Tuesday 9/24
Miller And Levine Chapter 24 And 25
Terms in this set (60)
What are the two male reproductive parts of a flower?
Anther and Filament
What is the term given to when a male sperm that has journeyed down the tube cell fertilizes with the egg inside the ovary?
During this process of double fertilization, what is this structure & what does it do?
Tube cell...connects the pollen grain's generative cell sperm to the egg in the ovary
What are the three ways of seed dispersal?
What are the three types of plant propagation?
Why was Kudzu problematic?
-Rapid rate of overgrowth (infestation)
-Overtook surrounding plants
-Dominated the landscape
Describe the connection between hormone and target cells...
Hormones are sent to/received by
target cells to facilitate plant growth
What are the three types of tropism?
When the leaves grow towards the light
When the roots grow down and the shoots grow up
(Touch sensitivity) A plants response to light
What is tropism?
When a plant turns towards the light
What do Hormone Gibberellins do?
The facilitate rapid growth of a plant for...
-Leaf and fruit senescence
What is ethylene used for?
Its is used to ripen fruits quicker
depositing of pollen onto the stigma
joining of the pollen to an ovule to produce a zygote
Development of fruit
expanding and ripening of the ovary which protects the seeds
1.increased starch production 2.decreased production 3.conversion to sugar
Give and example of stolons, grafts and plantlets
Stolons - strawberry
Grafts - apples
Plantlets - spider plant
What does the anther contain?
Seed and Fruit Development
As angiosperm seeds mature, the ovary walls
thicken to form a fruit that encloses the
of new plants from horizontal stems, from
plantlets, and from underground roots.
identify the differing types of plants and give representative examples of each...
Xerophytes - cacti
Salt tolerant plants - inkberry
Parasitic plants - mistletoe
Carnivorous plants - pitcher plant, Venus' fly trap, sundew
Toxin producers - tobacco, foxglove
What are the factors that make a seed come out of dormancy?
Temprature & Moisture
What are the 4 crops that make up 80% of U.S farmland?
wheat, corn, soybeans and hay
Cells where hormones carry out their function
hormones produced in apical meristems and transported downward into the rest of the plant.
Studied extensively by Charles Darwin and son Francis The power of movement in plants
-Phototropism of oat seedlings
Auxins and phototropism
-Stimulate cell elongation
-Produced in apical meristem
-Transported down into the rest of the plant
-Retard abscission layer
Auxins and gravitropism
Turn plant upwards
Auxins and branching
Auxin like weed killers
As cells grow, they develop lateral buds.
Auxins inhibit this growth making apical growth more 'dominant'
What are some other hormones of a plant?
-Stimulate cell division
-Growth of lateral buds
-Dormancy to sprouting
any of a group of plant hormones that stimulate stem elongation, germination, and flowering
Where are the hormone producing cells in a
-Growing flowers and fruits
What are target cells?
cells that contain hormone receptors,
affected by the hormones
How do hormones affect target cells?
Changing metabolism, growth rates, activating
Plants that flower when days are short
Plants that flower when days are long
When plants respond to periods of light and darkness
What is photoperiodism in plants responsible for?
Timing of seasonal activities such as flowering and growth
A plant pigment responsible for photoperiodism
List one of the rapid responses by plants?
The Venus Fly Trap demonstrates rapid response. A fly lands on the fly traps leaves and activates the sensory cells, telling the plant that they're is something on it. A change in osmotic pressure and cell wall expansion cause the leaf to snap shut.
Where are the hormone producing cells in a plant?
-Growing flowers and fruits
Cone in gymnosperm that produces male gametophyte in the form of pollen grains
Cone that produces female geametophytes
Structure in seed cones in which female gametophyte develop
Structure grown by a pollen grain; contains two haploid sperm and nuclei
female gametophyte within the ovule of a flowering plant
food-rich tissue that nourishes a seedling as it grows
fertilization in angiosperms, in which two distinct fertilization events take place between the male and female gametophtes
a period of time in which a plant embryo is alive, but not growing
the earliest growth stage of a plant embryo
method of asexual reproduction used by many flowering plants
the long trailing stems that strawberry plants send out
an area on one side of a stem that gives rise to side branches
a response of plats to touch
this seals the leaf off from the plants vascular system