SPO5: Plant Diversity II Flashcards
Naked Seed
Gymnosperm.
Seed not surrounded by ovule
Redwoods firs, pines, cycads, junipers, conifers, etc.
The flowering plants
Angiosperms
Multiple agents of pollination (air, water, other animals,)
An ovary houses the ovule in a fruit
A dormant embryo embedded in nutritive tissue
Seed
The nutritive tissue of the seed that acts as a food storage for the developing plant embryo, usually containing starch with protien and other nutrients.
Endosperm
Found in the pollen grain produces the sperm
Male gametophyte
Held in the ovule of the sporophyte, produces the egg
Female gametophyte
Dominant stage of life for seed plants
Sporophyte
Develops in the gametophyte
Embryonic sporophyte
Seed housed in a mature ovary
Fruit
houses male and female components
Flower
Has microsporangium which produces microspores, which produces sperm
Anther
Produces megasporangium which produces the egg
Ovule
What kind of gymnosperm are these?
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Conifers
What kind of gymnosperm are these?
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Cycads
What kind of gymnosperm is this?
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Ginko
Produced by pollen grain. Releases sperm nucleus to fuse with egg nucleus.
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Pollen Tube
What type of gymnosperm is this?
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Gnetophyte
Contains ANTHER and FILAMENT. Male portion of the flower.
Stamen
A, G, and E form what structure?
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The Pistil (or carpel), the female part of the flower
A
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Stigma
BETWEEN A and G?
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Style
G
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Ovary
B
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Anther
H
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Filament
B and H
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Stamen
C
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Petal (Corolla)
D
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Sepal (collectively: Calyx)
E
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Receptacle
F
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Pedicel
Forms from a single flower, with 1 carpal.
SIMPLE Fruit.
Peach, pea
Forms from a single flower with more than 1 carpal. tiny fruits fused.
AGGREGATE Fruit.
Blackberry
Forms from more than one flower, fused.
MULTIPLE
Pomegranite, pineapple, dates
Form from ovary and the pedicle
ACCESSORY
Strawberries, apple
AGREGATE and MULTIPLE fruts are collectively referred to as:
COMPOUND fruits
Key to Pollination:
Sepals and petals reduced or inconspicuous; feathery or relatively large stigma; flower with no color
WIND
Key to Pollination:
Sepals and/or petals large, easily identified; stigma not feathery; flower with or withour odor
Odor strong, heavy, sweet
MOTH
Key to Pollination:
Sepals and/or petals large, easily identified; stigma not feathery; flower with or withour odor
Odor strong, fermenting or fruitlike; flower parts and pedicle strong
BAT
Key to Pollination:
Sepals and/or petals large, easily identified; stigma not feathery; flower with or withour odor
Odor of sweat, feces, or decaying meat
FLY
Key to Pollination:
Sepals and/or petals colored; odor may or may not be present.
- Flower shape irregular; sepals or petals blue, yellow or orange; petal adapted to serve as a “landing platform”; may have dark lines on petals; sweet, fragrant odor
BEE
Key to Pollination:
Sepals and/or petals colored; odor may or may not be present.
- Flower shape regular; odor often fruity, spicy, sweet, or carrionlike
BEETLE
Key to Pollination:
Sepals and/or petals colored; odor may or may not be present.
Flower shape tubular; strong sweet odor
BUTTERFLY
Key to Pollination:
Sepals and/or petals colored; odor may or may not be present.
Flower shape tubular, Little or no odor; flower usually red
HUMMINGBIRD
The three layers surrounding a seed (collectively)
Pericarp
The three layers surrounding a seed (individually) from innermost to outermost
endocarp
mesocarp
exocarp
Key to Fruits:
- Dry fruits
- Fruits with one seed
- Ovary wall and seed coat are fused
ACHENE
(In the grass family, an achene is called a GRAIN)
This fruit is INDEHISCENT
i.e. Sunflower
Key to Fruits:
- Dry fruits
- Fruits with one seed
- Ovary wall hard or woody but can be separated from seed
NUT
This fruit is INDEHISCENT
i.e. Walnut, Hazelnut
Key to Fruits:
- Dry fruits
- Fruits with two to many seeds
- Ovary with several cavities (seen when cut in cross section) and several to many seeds
CAPSULE
This fruit is DEHISCENT
i.e. Cotton, Poppy
Key to Fruits:
- Dry fruits
- Fruits with two to many seeds
- Mature ovary opens aling BOTH SIDES
LEGUME
This fruit is DEHISCENT
i.e. Beans, Peas
Key to Fruits:
- Dry fruits
- Fruits with two to many seeds
- Mature ovary opens along ONE SIDE
FOLLICLE
This fruit is DEHISCENT
i.e. Brazil nuts, Milkweed
Key to Fruits
- Fleshy Fruits
- Ovary with one seed, which is surrounded by a very hard stone (outer covering of the seed is formed from the inner ovary wall)
DRUPE
i.e. Plum, Peach
Key to Fruits
- Fleshy Fruits
- Ovary with many seeds; does not have a “stone”.
- All mature ovary tissue is soft and fleshy; surrounding flower tissue does not develop into fruit.
BERRY
i.e. Tomato, Grapes
Citrus family
Hespiridium
Squash family
pepo
Key to Fruits
- Fleshy Fruits
- Ovary with many seeds, does not have a “stone”.
- Fleshy fruit develops in part from surrounding tissue of the flower (base of sepals and petals): therefore, ovary wall seen as “core” around seeds
POME
i.e. Apples, Pears