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spore
a reproductive cell that grows directly into a new plant
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gamete
a sex cell; sperm or egg
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zygote
the product of union of a sperm and egg; a fertilized egg
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pedicel
the stalk of an individual flower in an inflorescence
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receptacle
the enlarged end of a flower stalk to which the flower parts are attached
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complete flower
a flower having all of the normal flower parts
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calyx
collectively, all of the sepals in a flower
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sepal
a flower part that usually encloses and protects the flower bud
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incomplete flowers
a flower lacking one or more of the normal flower parts
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corolla
collectively, all of the petals in a flower
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petal
an often flattened, conspicuously colored flower part
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perianth
all of the sepals and petals in a flower
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tepal
a perianth part in flowers having no distinct petals or sepals
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stamen
the male part of a flower, consisting of an anther and filament
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filament
the stalk of a stamen bearing an anther
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anther
the pollen bearing part of a stamen
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pollen
a structure that develops from a microspore in angiosperms and gymnosperms to become a male gametophyte
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pistil
the female part of a flower
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stigma
the part of a pistil that receives pollen
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style
the narrow part of a pistil bearing a stigma
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ovary
the basal portion of a pistil that becomes a fruit
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corona
a trumpet-like outgrowth of petals
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actinomorphic flower
a flower possessing radial symmetry; any cut through the center divides the flower into two equal parts
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zygomorphic flower
an irregular shaped flower divisible into two similar halves along one plane only
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pollination
pollen transfer from a pollen to a stigma or, in gymnosperms, from a male cone to a female cone
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nectary
a gland secreting nectar
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nectar
a sugary fluid secreted in some flowers
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spur
a tubular projection from a flower
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nectar guide
a contrasting color pattern in a flower that guides a pollinator to the nectar
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inflorescence
a shoot bearing clusters of flowers
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composite head
an inflorescence composed of many tightly packed , small, ray and disc flowers
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disc flower
a small tubular flower at the center of a composite head
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ray flower
one of several small flowers often forming a ring around the disc flowers in a composite head
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cross-pollination
the transfer of pollen to a flower on another plant
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dioecious
having male and female sex organs on separate individuals
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monoecious
bearing separate male and female flowers on the same plant
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self-pollenation
the transfer of pollen from an anther to the stigma of the same flower
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cleistogamy
the development of viable seed from unopened, self-pollinated flowers; closed-marriage
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pollen tube
an outgrowth from a pollen grain conveying the sperm to the female gametophyte
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endosperm
food storage-tissue in seeds
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embryo
an immature plant within a seed
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parthenocarpy
[G: parthenos, "virgin"; karpos, "fruit"] development of a fruit without pollination, fertilization, or seed development
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apomixis
[G: "a different mixing"] development of a viable seed without the fusion of gametes
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pericarp
the fruit wall, derived from the ovary wall
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simple fruit
a fruit formed from one ovary
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aggregate fruit
a group of small fruits derived from several ovaries within a single flower
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multiple fruit
a cluster of mature ovaries from several flowers on a mature stem
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bract
a modified leaf arising below a flower of inflorescence
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spike
an inflorescence in which the flowers are attached to the main stem without stalks
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raceme
an inflorescence where flowers are borne on short stalks on an elongated stem
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panicle
a highly branched inflorescence
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umbel
an inflorescence in which the flower stalks arise from one point at the tip of a stem
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spathe
a large bract enclosing a spadix
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spadix
a spike of flowers enclosed in a spathe
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micropyle
opening for pollen tube to poke its head
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carpel
a section of an ovary
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peduncle
a branching stem of an inflorescence
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dehiscent
fruits that split open
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indehiscent
fruits that do no split open
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achene
a type of simple dry fruit produced by many species of flowering plants
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drupe fruits
- simple fleshy fruit that has a pit or stone
- cherry
- date
- peach, plum, nectarine
- coconut
- mango
- olive
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pome fruits
- simple fleshy fruit
- apple
- pear
- loquat
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berry fruits
- simple fleshy fruit
- grape
- tomato
- banana
- watermelon (pepo)
- pumpkin
- persimmon
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achene fruits
- dry, indehiscent
- cannabis
- strawberry (aggregate of achenes)
- sunflower
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pepo fruits
- Melon family
- squash
- cucumber
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caryopsis
- grain
- corn
- rice
- wheat
- Grass family
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