BIOL 111 Exam 3 Flashcards

Heterosperms

angiosperms and gymnosperms

Angiosperms (general)

covered seeds

Gymnosperm (general)

naked/bare seeds

___phyte depends on the ___phyte

gametophyte depends on the sporophyte

In seed plants,

the sporophyte nourishes the developing gametophyte

Vascular tissue is found in:

Ferns, conifers (gymnosperms), and angiosperms

Primary growth in angiosperms and gymnosperms results in ___ ___ ___ ___

increased height and roots

Secondary growth in angiosperms and gymnosperms

increased girth, production of wood

Vascular seed plants can be ___sperms and ___sperms

angiosperms and gymnosperms

Pollen

removes the need for water to reproduce

Pollen grain

microgametophyte with only 3 cells

A microgametophyte is a ___ ___ ___ ___

gametophyte that produces sperm

Seeds are ___ ___ ___ ___ ___ ___ ___ ___

a protective case with a source of food

Endosperm

tissue from the parent that is used as a for source by the developing embryo

Gymnosperm seeds

does not have an ovary but they have cones

Angiosperm seeds

has an ovary that later becomes the fruit

Female pinecones are ___ and have ___ between scales

larger, gaps

Male pinecones are ___ and have ___ ___ between scales

smaller, no gaps

All seed plants are ___, and thus produce ___ and ___

heterospores, microspores and megaspores

Microsporangium (pollen cones) is where ___ occurs and ___ are produced

meiosis, microspores

___ (___) can be found within each ___

microspores (n), microsporangium

___ are within the pollen grain

sperm

Male cones first produce ___ inside the ___, then they turn into the ___, then the ___

microspores, microsporangia, microgametophytes, sperm

Female cones first produce ___ inside the ___, then they turn into the ___, then the ___

megaspores, megasporangia, megagametophytes, seed

In angiosperms, the ___ becomes the ___

ovule, seed

Carpel

stigma (opening) and ovary (female only)

___ enters through the stigma opening

pollen

Stamen

anther and filament (male only)

Ovule becomes the female ___ and ___ (___)

sporangium, gametophyte, seed

Anther

surrounds the ovaries and has pollen grains on it

Double fertilization

has 2 nuclei (angiosperm flowering plants only)

The primary endosperm cell is ___ (only in ___sperms)

triploid, angiosperms

Ovary become the ___

fruit

Ovule becomes the ___

seed

Egg cell becomes the ___ ___

Plant embryo