Chapter 5/6
University Honors Program 242 with Amisi at Grand Valley State University
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By: Marie Elise
Created: 2011-01-30
Size: 24 flashcards
Views: 5
Created: 2011-01-30
Size: 24 flashcards
Views: 5
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Alteration of Generations
The alternation between a haploid (gametophyte) and diploid (sporophyte) generation in the plant life cycle.
What is the difference between mitosis and meiosis?
Mitosis: asexual, 2 diploid daughter cells, genetically identical, one division
Meiosis: sexual, 4 haploid daughter cells, genetically different, two divisions
Meiosis: sexual, 4 haploid daughter cells, genetically different, two divisions
Life cycle of bryophytes
Dominant phase: gametophyte, diploid only present for short period after fertilization.
Fertilized zygote undergo meiosis form haploid spores in capsule
Fertilized zygote undergo meiosis form haploid spores in capsule
Life cycle of Fern
More dominant sporophyte stage
Life cycle of Gymnosperms
More dominant sporophyte stage
LIfe cycle of angiosperms
more dominant sporophyte phase
What is the most diverse group of plants?
Angiosperms
Monocots
One cotyledon, parallel veins, complexly arranged vascular bundles, fibrous root system, floral parts in multiples of 3
Dicots
two cotyledons, netlike veins, vascular bundles arranged in ring, taproot system, floral parts in multiples of 4 or 5
Pollination
transfer from anther to stigma
How do angiosperms achieve pollination?
Animals carry pollen which they pick up when they retrieve nectar or brush by the plant
Double fertilization
One sperm fertilizes egg to produce a zygote that will develop into an embryo
a second sperm fertilizes or fuses with the two polar nuclei, producing endosperm.
a second sperm fertilizes or fuses with the two polar nuclei, producing endosperm.
How is the endosperm produced? How many sets of chromosomes does it have?
Second sperm in double fertilization fuses with two polar nuclei. Triploid, 3 sets.
What is a fruit?
Enlarged ovary of a flower
What is a seed?
The ovule of a flower
What are the three layers of the pericarp?
Endocarp, mesocarp, exocarp
Simple fleshy fruits
Berry, hesperidium, pepo, drupe, and pomes
Dry dehiscent fruits
Open at maturity
Follicles (one seam) - Milkweed
legumes (two seams) - peapod
capsules (multiple seams) - buckeye
Follicles (one seam) - Milkweed
legumes (two seams) - peapod
capsules (multiple seams) - buckeye
Dry indehiscent fruits
Don't open at maturity
Achenes - one seeded fruit, pericarp free from seed (sunflower)
samaras - winged achene (maple)
grains - seed coat fused to ovary wall
nuts - one-seeded fruits with hard stony pericarps
Achenes - one seeded fruit, pericarp free from seed (sunflower)
samaras - winged achene (maple)
grains - seed coat fused to ovary wall
nuts - one-seeded fruits with hard stony pericarps
Aggregate fruits
develops from one flower with many separate carpels, all ripening simultaneously (blackberries, raspberries)
Multiple fruits
develops from ovaries of different flowers fused together on a single stalk (pineapple, fig)
Parthenocarpy
fruit w/o fertilization. No seeds.
What caused tulip mania in 17th century Holland? How was society affected?
People thought tulips were beautiful, associated with wealth and royalty. Created a huge demand, prices sky-rocketed. Then someone was like "Oh, it's just a flower." and the entire economy collapsed.
Are flowers "exquisitely useless"? Why are they so important to man/society?
They have symbolic significance, and a separate market. People buy them for their beauty.
Flowers also produce fruit.
But mostly, they're used to cheer up girls who have had a bad day.
Flowers also produce fruit.
But mostly, they're used to cheer up girls who have had a bad day.
About this deck
By: Marie Elise
Created: 2011-01-30
Size: 24 flashcards
Views: 5
Created: 2011-01-30
Size: 24 flashcards
Views: 5
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“Simply amazing. The flash cards are smooth, there are many different types of studying tools, and there is a great search engine. I praise you on the awesomeness.”
Dennis
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