Ch.30 Seed Plants

Question 1

Approximately, how many species of the 5 following Phyla groups:

Coniferophyta,
Cycadophyta
Gnetoohyta
Ginkophyta
Anthophyta

Answer 1

630 Coniferophyta 40% of all forests

306 Cycadophyta
65 Gnetoohyta
1 Ginkophyta
Over 300,000 Anthophyta

Question 2

Gymnosperm means…

Answer 2

Naked seed

Question 3

Angiosperm means…

Answer 3

Covered seed

Question 4

Male Gametophytes functions:

Answer 4

Produce pollen grains (which contain sperm).
Dispersed by wind or a pollinator such as a bee.
Does NOT require water for dispersal.

Question 5

Female Gametophytes Functions

Answer 5

Contained within an ovule, which is within an ovary.

In angiosperms, the ovary develops into a fruit.

Question 6

What is a fruit?

Answer 6

a mature, ripened ovary of a flower and contains seeds.

Question 7

Know the whorls of a flower

Answer 7

1st=sepals, 2nd=petals, 3rd=stamen, 4th=carpel (e.g. gynoecium).

Question 8

Which plant species has the largest sperm cells of all organisms?

Answer 8

Cycads(gymnosperm)

Question 9

Major Fruit Types

Answer 9

True Berry – many fused ovaries, fleshy middle, many seeds (ex: tomato)
Legume – a dry fruit, multiple seeds in a single row, fruit splits (ex: pea pod)
Drupe – a single large seed in the middle (ex: peach, plum, cherry)
Samaras – a dry fruit with a wing (ex: maple, elm, ash)
Aggregate – many unfused ovaries from a single flower (ex: strawberry, blackberry)
Multiple – many fused flowers (pineapple)

Question 10

Why is fruit dispersal important? What are the methods of fruit dispersal?

Answer 10

The purpose of fruit is to disperse seeds away from the plant.

Question 11

Parts of the flower function:

Sepal
Petal
Stamen (including filament and anther)
Carpel (including stigma, style and ovary)

Answer 11

Sepal-The outer parts of the flower (often green and leaf-like) that enclose a developing bud.
Petal-
Stamen-The pollen producing part of a flower, usually with a slender filament supporting the anther.
Carpel -female reproductive organ of the flower

Question 12

Know that the angiosperms originated in——-.

Answer 12

China

Question 13

Gymnosperm Taxonomy

Answer 13

Phylum Coniferophyta – Conifers (pines, firs, redwoods)
Phylum Cycadophyta – cycads
Phylum Gnetophyta – Gnetum, Ephedra, Welwitschia
Phylum Ginkophyta – Ginko biloba

Question 14

Angiosperm Taxonomy

Answer 14

Phylum Anthophyta – Flowering plants