Lecture 12 - Bryophytes

Question 1

What is bryophytes evolutionary position between?

Answer 1

Green algae and vascular plants

Question 2

How are bryophytes different from algae regarding antheridia and archegonia?

Answer 2

Bryophytes have antheridia and archegonia with a sterile jacket layer

Question 3

How are bryophytes different from algae regarding zygote and embryo?

Answer 3

Bryophytes zygote and embryo in an archegonium

Question 4

How are bryophytes different from algae regarding sporophyte?

Answer 4

Multicellular diploid sporophyte

Question 5

Are bryophytes vascular or non vascular?

Answer 5

Nonvascular plants

Question 6

3 plants bryophytes are comprised of

Answer 6

Hornworts, liverworts, mosses

Question 7

bryophytes were similar to what plants in time?

Answer 7

Similar to first land plants

Question 8

What habitats are bryophytes found in?

Answer 8

All terrestrial Habitats, most diversity in moist environments

Question 9

How are bryophytes different from other plants regarding vascular tissue?

Answer 9

Bryophytes lack xylem and phloem

Question 10

How are bryophytes different from other plants regarding dominant generations?

Answer 10

Gametophyte is larger and longer lived (dominant generation)

Question 11

How are bryophytes different from other plants regarding its sporophyte?

Answer 11

Sporophyte isn’t free living - permanently attached to gametophyte

Question 12

What characteristics do different bryophytes share regarding size?

Answer 12

Small, simple plants

Question 13

What characteristics do different bryophytes share regarding reproductive organs?

Answer 13

Antheridia (male) and archegonia (female)

Question 14

What characteristics do different bryophytes share regarding rhizoids?

Answer 14

Root-like structures that anchor the plant

Question 15

A typical bryophyte life cycle begins with?

Answer 15

Begins with A haploid spore that germinates on moist soil

Question 16

What does the germinating haploid spore grow into?

Answer 16

A haploid gametophyte

Question 17

The haploid gametophyte is typically?

Answer 17

Unisexual

Question 18

Male gametophytes produce?

Answer 18

Antheridia

Question 19

Female gametophytes produce?

Answer 19

Archegonia

Question 20

Where do sperm swim from and to?

Answer 20

Sperm swim from antheridium to an archegonium

Question 21

The sperm cell fertilizes an egg cell to produce?

Answer 21

A diploid zygote

Question 22

A diploid sporophyte develops within the?

Answer 22

Archegonium

Question 23

What does the sporophyte produce?

Answer 23

A sporangium

Question 24

What occurs within the sporangium and what does it produce?

Answer 24

Meiosis occurs in the sporangium, it produces haploid spores

Question 25

What do hornworts not have?

Answer 25

No Leaves or stems

Question 26

How do hornworts grow?

Answer 26

Grow as a flat green lobe called a thallus

Question 27

Where do hornworts produce spores?

Answer 27

In a horn-like capsule that grows up from the lobes

Question 28

What do hornworts capsule not have?

Answer 28

No stalk on the capsule

Question 29

What are the 2 types Of liverworts?

Answer 29

Leafy and thallose

Question 30

Describe leafy liverworts

Answer 30

Have “leaves” on “stems” and look like mosses

Question 31

Describe thallose liverworts

Answer 31

Grow as flat Green lobes, some look like hornworts

Question 32

What does a moss look like?

Answer 32

Has “leaves” on a “stem”

Question 33

Mosses leaves are how many cell layers thick?

Answer 33

Only one cell layer thick

Question 34

Where do mosses produce spores?

Answer 34

In capsules

Question 35

Where are mosses capsules borne?

Answer 35

On long stalks