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Science

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chapter 20 vocabulary
Vocabulary part 7
vocabulary part 8
Vocabulary part 7
vocabulry part 6
vocabulary part3
vocabulary part4
vocabulary part2
animal definitions
From Flower To Fruit
HOW DOES PLANT FERTILIZATION OCCUR?
endocrine glands
Plant Characteristics
THE MALE REPRODUCTIVE SYSTEM
FEMALE REPRODUCTIVE SYSTEM
nervous system
nervous system part 2
definitions on the cardiovascular system
BODY ORGANIZATION
Chapter HIGHLIGHTS Part 2
medtropilis
The Integumentaty System
DNA
How can DNA become damaged?
The Muscular System
quiz yourself
QUIZ part 2
Scientific method
Cell cycle
Cell Division
DEFENITIONS
test your brain
answers to test your brain!
vocabulary chapter 23
science time line on cell division
life science
need help
Gregor Mendel
Mendels second experiment
Terms to learn
Chapter Highlights
Vocabulary part 5
HOW DOES PLANT FERTILIZATION OCCUR?

In order for fertilization to occur, sperm cells must be able to reach eggs. The sperm cells of a flowering plant are contained in pollen grains. pollination occurs when pollen grains are transported from anthers to stigmas. After the pollen lands on the stigma, a tube grows from the pollen grain through the style of the ovary. Inside the ovary are ovules. Each ovule contain an egg. Sperm cells within the pollen grain move down the pollen tube and into the ovule. fertilization occurs as one of the sperm cells fuse with the egg inside the ovule.

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