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Science Seed Reproduction sc 3
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23
Science
7th Grade
02/20/2012

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Cards

Term
what helps many plants reproduce?
Definition
pollen and seeds
Term
What has a covering and contains gametophyte parts that can produce sperm?
Definition
a pollen grain
Term
When does pollination occur?
Definition
pollen grains are transferred to the female part of the plant
Term
What happens to the female part after fertilization?
Definition
it produces a seed which contains an embryo, stored food, and a protective coat
Term
Why can plants develop more quickly from a seed than from a spore?
Definition
because a seed contains an embryo and stored food
Term
How do gymnosperms develop seeds?
Definition
in cones
Term
What is a sporophyte plant that produces male and female comnes?
Definition
a pine tree or shrub
Term
What does a female cone have?
Definition
2 ovules which produce eggs
Term
What do male cones produce and release
Definition
pollen
Term
What happens when polen blows into a female cone?
Definition
fertilization and seed formation can occur
Term
What can take 2 or 3 years?
Definition
seed release by a female cone
Term
Angiosperms produce flowers which are used in what?
Definition
sexual reproduction
Term
What is the male reproductive organ?
Definition
stamen
Term
What is the female reproductive organ that contains the ovary at its base?
Definition
the pistil
Term
What can the appearance of a plant's flowers determine?
Definition
how the plant is pollinated
Term
What happens hafter pollination and ferilization?
Definition
a zygote forms and grows into the plant's embryo
Term
What devolps into the seed coat and stores food for the embryo?
Definition
parts of the ovule
Term
What stores food in cotyledons?
Definition
some seeds
Term
What do other seeds store food in?
Definition
endosperm tissue
Term
What are dispersed by wind, gravity, animals, and water?
Definition
seeds
Term
What occurs when the seed coat swells and breaks open and a plant grows from the seed?
Definition
germination
Term
What effects germination?
Definition
environmental conditions
Term
What is the difference between gymnosperms and angiosperms?
Definition
Gymnosperm plants produce seeds in cones; angiosperm plants use flowers for reproduction and seed making
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