1.4.1 Fern allies Flashcards Preview

Plant Science > 1.4.1 Fern allies > Flashcards

Flashcards in 1.4.1 Fern allies Deck (16)
Loading flashcards...
1
Q

What two plants families are included in the phyllum lycopodiophyta

A

lycophytes and club mosses

2
Q

what plants are in the phylla Pteridophyta?

A

whisk ferns and horse tails

3
Q

characteristics of fern allies (4)

A
  1. they reproduce by spores and have two generations
  2. they have dominant sporophyte and a small free living gametophyte
  3. they need water for sperm to fertilize egg
  4. conducting tissue
4
Q

what is a microphyll?

A

a leaf with a single, unbranched vein

5
Q

two characteristics of club mosses

A

true microphylls

megagametophyte (female) and microgametophyte (male)

6
Q

what is a gametophyte?

A

the cycle of the plant that produces the zygote from which the spore arises

7
Q

what is a living group of the lycophytes?

A

club mosses

8
Q

For this phyla, the life cycle is homosporous

A

lycopodium

9
Q

for this group, the life cycle is heterosporous. what are the two spores called, and what is there gender?

A

Selaginella

megaspore (female) and microspore (male)

10
Q

what is the latin name for ferns?

A

pteridophyta

11
Q

recent molecular evidence has put what two primitive groups of plants in with ferns?

A

horsetails and psilotum

12
Q

what is a limiting factors for fern expansion

A

they need to stay in wet environments because they need water to reproduce

13
Q

what is the life cycle of the fern?

A

dominant sporophyte and free living gametophyte

14
Q

define the psilotum (2 points)

A

used as an example of what early plants looked like, but actually devolved from ferns
2. lack both leaves and roots

15
Q

define horsetails (3 points)

A
  1. “Dominated caboniferous forests 300 mills”
  2. segmented stems with silica
  3. only one genus survives today, the Equisetum.
16
Q

What is a megaphyll?

A

a leaf that has more than one vein or vascular trace. They are found on ferns, gymnosperms, and angiosperms