Seed Plants

Primordium

Primordium

________ develops into a bud at the end of a stalk called the** pedice** l.

Ovule

________ and protective tissue are the ovary.

Pedicel

________ expands at the tip to form a receptacle, to which other parts attach.

Female cones

________ usually take 2 or more seasons to mature.

Megasporangium

________ divide meiotically inside ovule to produce haploid megaspore.

Protects

________ and provides food for embryo.

Germination

________ can not take place until water and oxygen reach the embryo.

Bananas

________ are propagated asexually.

Megaspore

________ produces egg that combines with sperm to form zygote.

Antipodals

________ are the 3 cells at the other end- they have no function.

Conifers

________ are sources of important products.

meristems

In many angiosperms, development of the embryo is arrested soon after ________ and cotyledons differentiate.

haploid nuclei

The 8 ________ in 7 cells make up the female gametophyte.

Pollen production

________ occurs in the anthers.

ovary wall

The ________ is termed the pericarp.

Integuments

________ develop into a relatively impermeable seed coat.

Female gametophyte

________ has archegonia at the micropylar end.

fungal attacks

Leaves have canals with resin to deter insect and ________.

nucellus

The ________ is surrounded by the integument.

Micropyle

________: small opening at end of integument.

Fruits

________ contain 3 genotypes in 1 package.

Flower parts

________ are organized in circles called whorls.

emergence of angiosperms

The ________ changed the terrain of Earth.

Diploid microspore

________ mother cells undergo meiosis to produce 4 haploid microspores.

Ovules

________ are enclosed in diploid tissue at the time of pollination.

Female cones

________ can weigh 45kg.

Female cones

________ are larger and have woody scales.

Coastal redwood

Tallest living vascular plant

Bristlecone pine

Oldest living tree

Micropyle

small opening at end of integument

Outermost whorl

sepals

Second whorl

petals

Third whorl

stamens

Innermost whorl

Pistil (aka Carpel)

Ovary

swollen base containing ovules

Stigma

tip where pollen lands

Style

neck or stalk

Function as polar nuclei

may fuse

Antipodals are the 3 cells at the other end

they have no function

3 layers

exocarp, mesocarp and endocarp