Non-Vascular Plants (Plants)

Question 1

Non-vascular plants

Answer 1

don’t have vascular tissue
ancestors lived in H2O and didn’t need to develop vascular tissue
closely resemble ancestors
live close to H2O
require H2O for sperm to swim to egg
found in damp woods and along shaded streams
carpet-like

Question 2

3 types of non-vascular plants in order of lest to most evolved

Answer 2

liverwort
hornwort
moss

Question 3

Bryphota

Answer 3

where liverwort, hornwort and moss used to all be classified

waxy cuticle, protected gametes and alternation of generations

Question 4

adaptations that allow for growing on land

Answer 4

waxy cuticle keeps them from drying out

gametes develop in gametangia which keeps them moist

Question 5

gametangia

Answer 5

2 types:

1. antheridia- male part, contains sperm
2. archegonia- female part, contains eggs

Question 6

liverworts

Answer 6

flat structure that resembles some sea weeds
found on wet rocks and moist soil in shady places
gametophyte generation- produces gametes
thallus-
stem with leaves- looks like moss and sometimes get confused
covered in scales
photosynthetic cells- under pores in upper surface of leaves
rhizoids- unicellular, act like roots and hold plant down
does not have a cuticle
absorbs H2O overs its entire surface

Question 7

hornworts

Answer 7

found in warm climate that are moist and have shaded soil
contain rhizoids
sexual and asexual forms that appear alternately
gametophyte- produces gametes and is the leafy plant body
sporophyte- produces spores and is in a horn shape that grows upwards from gametophyte
sporophyte survives after gametophyte dies

Question 8

moss

Answer 8

rhizoids: multicellular, holds moss in place and absorbs H2O
gametophyte: photosynthetic, leaf-like branches, form part that most people recognize as moss- green moss mat
sporophyte: emerges from gametophyte branches to spread seeds

Question 9

uses of moss

Answer 9

dried moss: diapers, wound dressings, stuffing chairs, house insulation, absorbent material for sanitary napkins

Question 10

peat

Answer 10

dead and dried moss that can be burned for fuel

still used for this in Ireland