Plant Reproduction Flashcards
Angiosperms
flowering plants
What are the two angiosperm classes?
dicots and monocots
Describe the function of the stigma
pollen “landing pad” ( sticky )
Describe the function of the style
supports the stigma
Describe the function of the ovary
produces female sex cells ( ovules ) by meiosis
Describe the function of the anther
Produces male sex cells ( pollen ) by meiosis
Describe the function of the filament
Holds up and supports the anther
Describe the function of the petals
attracts pollinators
Describe the function of the sepals
protects developing flower ( while in bud )
Carpel
stigma + style + ovary= entire female part
Stamen
( anther + filament ) - entire male part
Draw a half view of an animal pollinated flower
What does the success in plant reproduction depend on?
Pollination, fertilization, and seed dispersal
What are the two types of pollination?
Self pollination and cross pollination
Self pollination
pollen from anther of same plant falls on its own stigma
Cross pollination
pollen from anther of one plant carried to stigma of different plant
Fertilization
fusion of haploid nuclei, male pollen grain fuses with the female ovule to produce a diploid zygote )
Why are seeds dispersed away from parent plant?
To reduct competition for resources
Mutualistic relationship
both pollinator and flower benefit ( animal gets nectar, pollen and flower are pollinated and fertilized )
Types of plant pollination vectors
wind, water, and animals are the main sectors of plant pollination
Describe wind/water pollinated plants
Odorless/ inconspicuous, have small flowers, have smooth pollen grains
Describe animal pollinated plants
large, brightly colored, scented flowers to attracts pollinators
What occurs after pollination?
Fertilization, followed by seeds development, then seed dispersal
Fertilization
pollen produces a pollen tube which grows down the style of the carpel, pollen tube grows into the ovary and enters the ovule, allowing sperm to fertilize and produce a zygote