Lab 4: plant diversity and life cycles

spore

A reproductive cell with a hard, protective coating-seed

why does the moss and ferns require water for reproduction

Because sperm requires water in order to swim to egg

Angiosperms enclose their ovules in a modified leaf called

Carpel

Which type of cell division produce spores

Meiosis

Is it possible for gametophytes to self fertilize

No

Microspores

Small spores that produce the male gametophytes by mitosis (several hundred per microsporangium)

Heterospory

Speeds up production of different types of spores-found in all seed plants

In sporophytes special regions termed _____ produce spores.

Sporangia

In the plant cycle, the ______ generation produces haploid spores via meiosis. The spores germinate and divide via_____ to produce a haploid _____ generation. The _____ generation produces haploid gametes via _____

Sporophyte, mitosis, gametophyte, gametophyte, mitosis

Haploid spores with ____ in their walls to resist drying

Sporopollenin

Gametophyte

The stage in the life cycle of a plant in which the plant produces gametes, or sex cells.-haploid

Sporophyte

The stage in the life cycle of a plant in which the plant produces spores.-diploid

Why do sporangia split open

To release spores to create a new plant

Is the production and role of spores the same in ferns and mosses

Yes

Meiosis

a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores.

Mitosis

cell division in which the nucleus divides into nuclei containing the same number of chromosomes

In gametophyte special regions termed _____ produce gametes

gametangia

Mosses are

gametophyte dominant-bryophyta-non vascular

Megaspores

large spores that divide by mitosis to produce the female gametophyte (4 per megasporangium)

Ferns

seedless vascular plants-sporophyte dominant

Gamete

sex cell

Powdery brown dots on the backs of leaves is termed

sori; contain sporangia

In homosporous plants the gametangia are antheridia and archedonia. Antheridia will release cells called ____. Archegonia will contain a cell called an ___

sperm, egg