Mosses, Liverworts, and Hornworts

Question 1

What are Bryophytes?

Answer 1

Mosses, liverworts, and hornworts

Question 2

What are the LIFE CYCLES of Bryophytes like?

Answer 2

Involves alternation of generations between a haploid (1n) gametophyte and a (2n) sporophyte

Question 3

What do Bryophytes need in order for reproduction to occur?

Answer 3

WATER

they also only thrive in wet areas

Question 4

How tall are most bryophytes?

Answer 4

less than a few CM tall

Question 5

What are 3 things mosses contain?

Answer 5

1. Gametophyte
2. Rhizoids
3. Sporophyte

Question 6

What are Gametophyte?

Answer 6

Thin upwright STALK that looks like a stem with tiny leaves (not true stems or leaves)

Question 7

What are Rhizoids?

Answer 7

Thin branches that GROWS into the GROUND and act like roots to securely anchor the plant (not true roots)

Question 8

What are Sporophyte?

Answer 8

Brown flag-like structures that top some shoots

Question 9

What are 3 things Bryophytes lack?

Answer 9

1. Lack water conducting tubes found in higher plants
2. Lack PROTECTIVE surface covering to keep water from evaporating from their cells
3. Lack TRUE ROOTS: rhizoids anchor but don’t absorb and transport efficiently

Question 10

How do water pass from one cell to the next with Bryophytes?

Answer 10

Passes by OSMOSIS and by means of SURFACE TENSION

works well for SHORT DISTANCES ONLY, thats why bryophytes are not tall*

Question 11

What are the “leaves” of Bryophytes like?

Answer 11

only ONE CELL THICK

Dry out quickly

Question 12

How so Bryophytes reproduced?

Answer 12

The SPERM must swim through the WATER to fertilized the EGGS

Uses FLAGELLA to propel themselves

Question 13

Where MUST bryophytes live?

Answer 13

in WET CONDITIONS