29-30, 32-33 Flashcards Preview

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Flashcards in 29-30, 32-33 Deck (203)
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1

What is the phylum name for liverworts?

Hepatophyta

2

What is the phylum name for hornworts?

Anthocerrophyta

3

What is the phylum name for mosses?

Bryophyta

4

What are the three common names for the land plants in the Bryophytes

liverworts, hornworts, mosses

5

What is a dependent embryo?

multicellular embryos are retained within the female parent and nourished by placental transfer cells

6

What is the most conspicuous generation of the bryophytes?

gametophyte generation

7

do bryophytes contains vascular tissue?

no, so they are close to the ground and are thinly layered

8

What is an antheridiophore?

A male structure containing antheridia

9

What is an archegoniophore?

A female structure contain archegonia

10

What is an antheridium?

A male structure containing many sperm

11

What is an archegonium?

A female stucture containing a single egg

12

What is the 9 step life cycle of the bryophytes?

1. Haploid spores land on soil.
2. Spores germinate.
3. Meristems bud from protonema and become male and female gametophytes. Rhizoids anchor gametophyte to soil.
4. Male produce sperm in antheridia; Female produce egg in each archegonium.
5. Sperm released in water droplets and swim into archegonium to fertilize egg.
6. Diploid zygote grows inside archegonium
7. Zygote grows into sporophyte with a seta and capsule.
8. Meiosis occurs in capsule producing millions of spores.
9. Spores are slowly released with gusts of wind.

13

What is a seta?

A stalk

14

What is a capsule?

A spore producing structure of sporophyte generation

15

What is a thallus

a plant body that is not differentiated into stem and leaves and lacks true roots and a vascular system

16

What two phyla are members of the pteridophytes

Lycophyta and Pterophyta

17

What are giant lycophytes?

Extinct lycophytes that were 2 m wide and 40 m tall that lived in swamps.

18

What is the genus name of a horsetail?

Equisetum

19

Describe a horsetail

a nonflowering plant with a hollow jointed stem that bears whorls of narrow leaves, producing spores in cones at the tips of the shoots

20

What is the genus name of a whisk fern?

Psilotum

21

Why are whisk ferns considered more primitive than most pteridophytes?

They lack true roots and leaves

22

Describe a fern

a flowerless plant that has feathery fronds and reproduces by spores released from the undersides of the fronds. Ferns have a vascular system for the transport of water and nutrients.

23

What is food-transporting vascular tissue called in plants?

Phloem

24

What is water-transporting vascular tissue called in plants?

Xylem

25

Do pteridphytes have seeds?

no

26

What is the more conspicuous generation of pteridophytes?

Sporophyte generation

27

What is the 7 step life cycle of ferns

1. Spore lands in moist shaded area.
2. Spore grows into a heart-shaped prothallus (haploid).
3. Homosporous gametophyte produces archegonia and antheridia that mature at different times.
4. Sperm swim through moisture to archegonia and fertilize egg.
5. Diploid zygote grows into sporophyte.
6. Sporophyte produces sori on the under side of frond.
7. Spores land on moist soil.

28

What is a sorus?

a cluster of spore-producing sporangia on the underside of a fern frond.

29

What is the true root of a fern called?

Rhizome

30

What does homosporous mean?

produce a single spore that grows into a gametophyte with both archegonia and antheridia