Chapter 30 Vocabulary

Question 0

Homosporous

Answer 0

Plants that produce one kind of spore, which usually gives rise to bisexual gametophytes

Question 1

Seed

Answer 1

Consists of an embryo and its food supply, surrounded by a protective coat. When mature, dispersed from their parent by wind or other means

Question 2

HeteroSporous

Answer 2

Producing two kinds of spores

Question 3

Megaspores

Answer 3

Produced by megasporangia that give rise to female gametophytes

Question 4

Microspores

Answer 4

Produced by microsporangia that give rise to male gametophytes

Question 5

Integument

Answer 5

A layer of sporophyte tissue that envelops and protects megasporangium

Question 6

Ovule

Answer 6

Whole structure – megasporangium, megaspore, and their integuments – called ovule

Question 7

Pollen grain

Answer 7

Developed microspore that consists of a male gametophyte enclosed within the pollen wall

Question 8

Pollination

Answer 8

The transfer of pollen to the part of a seed plant that contains the ovules

Question 9

Progymnosperms

Answer 9

Some transitional species of seedless vascular plants

Question 10

Conifers

Answer 10

Cone bearing gymnosperms, including Spruce, Pine, fir, and Redwood

Question 11

Angiosperm

Answer 11

a plant that has flowers and produces seeds enclosed within a carpel

Question 12

Flower

Answer 12

An angiosperm structure specialized for sexual reproduction

Question 13

Sepals

Answer 13

At the base of the flower, which are usually green and enclose the flower before it opens - think of a rosebud

Question 14

Petals

Answer 14

Brightly colored in most flowers and aid in attracting pollinators

Question 15

Stamens

Answer 15

Produce microspores that develop into pollen grains containing male gametophytes

Question 16

Filament

Answer 16

Stalk

Question 17

Anther

Answer 17

Where pollen is produced

Question 18

Carpels

Answer 18

Make megaspores and their products, female gametophytes

Question 19

Stigma

Answer 19

At the tip of the carpel is a sticky stigma that receives pollen

Question 20

Style

Answer 20

Leads from the stigma to the ovary at the base of the carpal

Question 21

Ovary

Answer 21

A female reproductive organ in which ova or eggs are produced

Question 22

Fruit

Answer 22

Typically consists of a mature ovary but can also include other flower parts

Question 23

Generative cell

Answer 23

Divides, forming two sperm

Question 24

Tube cell

Answer 24

Produces a pollen tube

Question 25

Embryo sac

Answer 25

Each ovule, which develops in the ovary, contains a female gametophyte, also known as an embryo sac

Question 26

Cross – pollination

Answer 26

In angiosperms, the transfer of pollen from an anther of a flower on one plant to the stigma of a flower on another plant of the same species

Question 27

Micropyle

Answer 27

A pore in the integuments of the ovule, and discharges two sperm cells into the female gametophyte (embryo sac)

Question 28

Double fertilization

Answer 28

One fertilization events produces a zygote and the other produces a triploid cell, unique to angiosperms

Question 29

Cotyledons

Answer 29

After double fertilization, the ovule matures into a seed. The zygote develops into a sporophyte embryo with a rudimentary root and one or two seed leaves called Cotyledons

Question 30

Endosperm

Answer 30

Tissue rich in starch and other food reserves that nourish the developing embryo

Question 31

Monocots

Answer 31

Species with one cotyledon

Question 32

Dicots

Answer 32

Species with two cotyledons

Question 33

Eudicots

Answer 33

“True dicots.” The vast majority of species once categorized as dicots form a large clade

Question 34

Basal angiosperms

Answer 34

The rest of the former dicots are now grouped into several small lineages. Three of these lineages are now in formally called this because they appear to include flowering plants belonging to the oldest lineages

Question 35

Magnoliids

Answer 35

A fourth lineage of former dicots that evolved later

Question 36

Bilateral symmetry

Answer 36

Flower petals can be symmetrical in one direction

Question 37

Radial symmetry

Answer 37

Flower petals can be symmetrical in all directions