Seed plants

Question 1

T/F Mosses are heterosporous

Answer 1

True

Question 2

T/F Ferns are heterosporous

Answer 2

True, mostly homosporous though

Question 3

T/F Angiosperm are homosporous

Answer 3

False, Heterosperm

Question 4

Why didn’t plants go extinct when meteor struck and change the atmosphere

Answer 4

Seeds were able to exist and wait for better conditions.

Question 5

Where is the embryo located in the angiosperm

Answer 5

In the seed.

Question 6

What do all angiosperms have in common

Answer 6

Reduced gametophytes,
Heterospory (Grow into male or female gametophyte), Ovules,
Pollen

Question 7

Define Gymnosperm

Answer 7

Cone bearing plants.

Question 8

T/F Gymnosperms and angiosperms are seed bearing plants

Answer 8

True

Question 9

Plant evolution from oldest to newest

Answer 9

Carophytes, Bryophytes, Lycophytes, Gymnosperm, Angiosperm.

Question 10

What do megasporangia produce

Answer 10

Seeds, (Eggs)

Question 11

What do microsporangia produce

Answer 11

Pollem, (Sperm)

Question 12

How are gymnosperm seeds unique?

Answer 12

They are naked, or open.

Question 13

4 Phylum of Gymnosperm

Answer 13

Cycadophyta
Ginkgophyta
Gnetophyta
Coniferophyta

Question 14

Features of Phylum Cycadophyta

Answer 14

Critically endangered,
Thrived in Mesozoic (dinosaur food)
Multiflagellated sperm
Beetles help pollinate

Question 15

Features of Phylum Ginkgophyta

Answer 15

One extant species
Tolerates air pollution
Sperm is multiflagellated
Seed coat has a vile smell
Human dependent

Question 16

Why do seeds smell like rot on a ginko tree

Answer 16

to attract an animal that is probably extinct.

Question 17

Features of Gnetophyta

Answer 17

Non motile sperm
found in desert and tropics
Does not produce 3n Endosperm, but extra embryo

Question 18

Features of Phylum Coniferophyta

Answer 18

Largest extant gymnosperm,
Evergreen
Use wind to reproduce
Cones = modified leaves

Question 19

Why do conifers produce so much pollen?

Answer 19

Higher likely hood of 1 sperm finding its way to the right spot on a cone.

Question 20

Are pollen grains haploid or diploid

Answer 20

Haploid

Question 21

How does a conifer reproduce

Answer 21

Pollen needs to land on the pine cone where it opens up to the egg to reproduce.

Question 22

How is pine pollen different from other pollen

Answer 22

It is more spherical and areodynamic, where as other pollen is barbed and more likely to stick to animals.

Question 23

What type of tree is the oldest tree

Answer 23

Conifer

Question 24

Which group contains more diversity, Gymnosperms or angiosperms

Answer 24

Angiosperms, but gymnosperms are very good at surviving.

Question 25

T/F Angiosperms are flowering plants

Answer 25

True

Question 26

What is the function of the flower?

Answer 26

Contain structures for sexual reproduction

Question 27

Parts of a flower

Answer 27

Sepals, Petals Stamen ( and anthers) Carpels (Ovary style stigma)

Question 28

What is the function of the stamen and anther

Answer 28

To produce pollen where bugs can land.

Question 29

What is the function of the carpel

Answer 29

To house the ovary

Question 30

What is the ovary of a flowering plant

Answer 30

The fruit

Question 31

What is the ovule of a flowering plant

Answer 31

The seed

Question 32

How do fruits aid in the dispersal of Seeds

Answer 32

Animals eat the fruit and latter dispose of seeds in poop with a rich environment for growth.

Question 33

T/F Acidic environments, (like stomachs) can help some seeds germinate

Answer 33

True

Question 34

What keeps herbivores from eating some flowering plants

Answer 34

Some have membranes and special secretions

Question 35

Why is it advantageous for a flowering plant to target a specific type of animal.

Answer 35

If there is codependence then reproduction is likely to occur and the plant doesn't have to compete with other plants.

Question 36

What is unique about the fertilization of an angiosperms

Answer 36

They often get double fertilized, 2 sperm, 1 egg making it 3n or triploid

Question 37

What are the three parts of the seed and what is their ploidy

Answer 37

Bran, Outer layer 2n (diploid) Endosperm, inner layer 3n (triploid) Germ, embryo, 2n (Diploid)

Question 38

What is the advantage of having a 3n endosperm around the embryo

Answer 38

It is really good at providing nutrition

Question 39

What is observed in ancient flowering plants?

Answer 39

Reproductive parts are not clumped together in a single flower.

Question 40

Define Eudicot

Answer 40

Two leaves upon sprouting

Question 41

Define monocots

Answer 41

One leaf upon sprouting

Question 42

What are the three lineages of angiosperm

Answer 42

Amborella trichopoda water lillies Star anise

Question 43

2/3 of angiosperm are characterized as

Answer 43

Eudicots

Question 44

1/3 of angiosperms are

Answer 44

monocots

Question 45

T/F Gymnosperms are eudicots

Answer 45

False, only angiosperms

Question 46

What happened when Plants were too plentiful towards the end of the paleozoic period?

Answer 46

Consumed all of the CO2 which eliminated the green house blanket and dropped temperatures dramatically.