Biology: Quiz 5 Sexual Reproduction in Plants

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ovulate cone

female cone of gymnosperms

The fully developed ovule becomes a

seed

gametophyte generation

the haploid generation, produces gametes by mitosis

pollination

transfer of pollen from male to female cones in gymnosperms or from anther to stigma in flowering plants.

complete flower

A flower that has all four basic floral organs: sepals, petals, stamens, and carpels.

female flower

A flower that has female parts only. It has pistils, but no stamens.

incomplete flower

A flower that lacks one or more of the four organs: sepals, petals, stamens, or pistils.

perfect flower

A flower with both stamens and a pistil or pistils.

sorus

A group of sporangia in ferns.

Vascular plants have a______ alternation of generations.

Heteromorphoic

prothallium

The gametophyte generation of a fern.

Pine cone seeds are produced in the _______ of the _______ cone.

ovule, female

What is the function of the gametophyte generation of the fern plant?

produces reproductive organs which produce a zygote

sorophyte

the diploid generation. One that produces spores by meiosis

Annulus

A row of specialized cells around the sporangium of most ferns. It plays a role in opening the sporangium and releasing spores.

Alternation of generations

the idea that the sporophyte generation and the gametophyte generation follow one another in alternating fashion.

stamen

the male organ of plants. it produces pollen.

The pistil of a flower consists of:

-ovary -stigma -style

meiospore

A spore produced by meiosis

sporangium

A spore producing cell or structure in protists and plants.

microsporangium

A spore-producing structure that produces microspores

filament

A stalk which supports the anther. its part of the stamen

ovule

A structure within the ovary of a flower that contains the female gametophyte. it develops into a seed after fertilization

heteromorphic alternation of generations

Alternation of generations in which the sporophyte an gametophyte generations have a different size, shape and appearance

pistil

Female part of the flower

homosporous

Producing spores that are all the same in size and shape.

style

a column like part of the pistil that supports the stigma of a flower.

The organ that produces the egg cell in the life cycle of the pine is called the

archegonium

About one year is required in the gymnosperm:

between pollination and fertilization

The collective term for the sepals is

calyx

corolla

collective term for petals

calyx

collective term for sepals

The pine cone seed is the:

container for the fertilized egg

The ripened ovaries of a flower produce:

fruit

is small, heart-shaped, and lives only a few week

gametophyte

The pollen produced by a gymnosperm is formed in the

male cone

Spores produced by the small male cone of a pine tree are produced by

meiosis

heterosporous

producing spores that are different in size and shape

The gametophyte generation of a fern is called the

prothallus

An increasingly intricate relationship exists between the gametophyte and sporophyte generations in vascular plants. As vascular plants live longer, they increase in size and complexity and the ______ generation becomes dominant, while the ______ generation becomes smaller and of shorter duration.

sorophyte, gametophyte

Life cycles found in vascular plants are variations of the

sporic life cycle

The green leafy plants recognized as ferns are from the ______ generation of the plant.

sporophyte

The gymnosperm tree or shrub comprises the ______ generation of the plant.

sporophyte

The one that lives long and have vascular tissue

sporophyte

male flower

A flower that has male parts only. It has stamens but no pistils.

sporic life cycle

A life cycle in which the sporophyte is more than the zygote, and the gametophyte is more than a gamete. The gametophyte and the sporophyte alternate with one another through time.

stigma

the sticky, terminal end of the pistil where pollen is caught in pollination.

pollen tube

the tube that grows from the pollen grain to penetrate the ovule for fertilization

How does the egg of a flower become fertilized?

when the pollen tube grows into the ovule


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