Card Set Information
Biology Parts flower reproduction life cycle flowering plant
Life Cycle of a Flowering Plant, Flower
Attracts insects with color and scent
Protects flower in bud and when closed
Supports all the other parts of the flower
Produces nectar to attract and reward insects
Contains one or more ovules
Contains an ovum, contains female sex cell
Supports the stigma
Catches pollen on its sticky surface
Carpel or Pistil
Unit containing all the female parts of the flower
Pollen producing structure
Stalk supporting the anther
Unit containing all the male parts of the flower
contains the male sex cell
Name the parts of the flower on the picture
What is the life cycle of a flowering plant?
Germination, growth and development, flower development, pollination, fertilization, fruit and seed development, and dispersal.
What are the two types of pollination?
Self-pollination and cross-pollination
What is pollination?
The transfer of pollen from an anther to a stigma
What is self-pollination?
The transfer of pollen from the anther to the stigma of the same flower or another flower on the same plant.
What is cross-pollination?
The transfer of pollen from an anther to a stigma of a different plant
Name agents of pollination
insects - rose, daisy, sunflower, lily
wind - grasses, cereals - wheat, barley, maize
What is fertilization?
The male sex cell fuses with the female sex cell. A new individual arises - first cell of the new individual = zygote
What is the first cell of a new individual in a plant called?
In insect pollination, why does an insect come?
To collect nectar or pollen for food
What attracts an insect to a flower?
The scent and colored petals advertise the presence of food.
How does an insect get pollen on its body?
By brushing past anthers to get to nectaries, this is purely accidental.
When does pollination take place?
When the insect brushes some of the pollen grains it collected before on to the stigma, purely accidental
Pollen grains will only grow tubes if they land where?
On a stigma of their own species
What happens when a pollen grain arrives on a stigma?
The pollen grain will germinate and begin to grow a pollen tube
The pollen tube grows through the style towards what?
An ovule inside the ovary
What is a gamete?
The male sex cell
What is the small hole the male gamete enters the ovule through called?
Where do the male and female sex cell fuse?
In the ovule
The zygote divides to form what?
What does the ovary change to?
What is Fruit and Seed Development?
zygote --> embryo --> inside the seed
ovule --> seed
ovary --> fruit
What is dispersal?
The spreading out of the seeds
Why is dispersal necessary?
Less competition for resources which are space, water, sunlight, and minerals
What are agents of dispersal?
Wind - dandelion, sycamore, poppy
Water - coconut
Self Dispersal - explosive pods
: peas, beans
Animal - attaches to the fur
: blackberry, papaya, apple, tomato
What is germination?
When the seed starts to grow
What conditions are needed for germination?
water, warm temperature, and oxygen
What conditions are not needed for germination?
soil, minerals, and light
Shoot or leaves