lecture 3 Flashcards
______ reproduces very slowly (common name for a division)
conifers
what is the scientific name for flowering plants?
division anthophyta
where are the reproductive organs located in flowering plants?
in the flowers
homosporous or heterosporous?
heterosporous
what does the microgametophyte make?
pollen
how many cells big is the megagametophyte in flowering plants? is there anything special about the structure of the megagametophyte?
7 cells big but 8 nuclei
what is endosperm? who does it belong to?
the endosperm belongs to the flowering plants (anthophyta)
What are the sepals?
outermost part/whorl
what is the caylx
the whole collection of sepals
what is the purpose of the sepals?
they protect the inner whorls
what are all the petals together called?
the corolla
what is the purpose of the petals?
protects the reproductive parts of the flower
attracts pollinators
what are the male reproduction structures called?
the stamens
What are the two parts of the stamen?
the filament
the anther
what is the androcium?
the collection of all the stamens together
the “house of men”
What is the carpel?
the female reproductive structure
what are the parts of the reproductive structure?
ovary (which contains ovules)
stigma
style
what is the function of the style
its where pollen compete to race down to the ovary
what is the function of the stigma?
the stigma is where pollen lands, then proceeds to the style
What is the gynoceium?
the collection of female reproductive parts; the collection of carpels
arrival of pollen on stigma ( of flowering plants) or on receptive female cone (conifers). Only happens to seed plants
pollination
female animal, or plant, involving the fusion of male and female gametes to form a zygote
fertilisation
What are the main 2 groups of flowering plants?
monocots
eudicots
What is a monocot?
a flowering plant whose seed contains one embryonic leaf
ex: grasses
what is a eudicot?
a flowering plant whose seeds contain two embryonic leaves
ex: oaks, maples
Are monocots or eudicots leaf veins parallel?
monocot
Are monocot or eudicots pollen grain have three openings?
eudicots
whose flower petals are in multiples of 3? Whose multiples of 4 or 5?
monocot - 3
eudicot - 4/5
What only occurs in seed plants?
pollination
conifers are ___pollinated
wind
characteristics of flowers that indicate who they are generally pollinated by
pollination syndrome
syndrome of ___
Shape: various: can be highly specialized or not
Colour: various, including yellow, blue, orange (not red)
Odor: non or highly specific
bees
syndrome of \_\_\_ Shape: tubular, open at night Colour: yellow or white Odor: strong and sweet, often only given off at night Nectar: large quantity
bats
syndrome of \_\_\_ Shape: tubular Colour: red most common, also yellow Odor: none Nectar: large quantity, often weak (20% sugar)
birds
syndrome of \_\_\_\_ Shape: not attractive (very reduced petals) Odor: none Nectar: none pollen : very large quantity Ex: grasses, ragweed
wind
What pollination type gives you hayfever
wind
