Lectures 27/28 - Plants Flashcards Preview

BISC 120 > Lectures 27/28 - Plants > Flashcards

Flashcards in Lectures 27/28 - Plants Deck (67)
Loading flashcards...
1

_____ and plants share a common ancestor

charophytes

2

What are 5 characteristics that separate plants from charophytes?

1. alternation of generations
2. multicellular, dependent embryos
3. Walled spores in sporangia
4. multicellular gametangia
5. apical meristems (grows up)

3

Why are plants called embrophytes?

-dependent embryos housed within parent gamenophyte

4

What makes spores so special?

they have sporinpollenin

5

What are the 2 types of vascular tissue?

1. xylem
2. phloem

6

What is xylem made of?

-traechied cells

7

What is sporinpollenin?

prevents exposed zygotes from drying out

8

What are lignin?

-strengthen water conducting cells like xylem
-provide structural support

9

What do xylem transport?

water + minerals

10

What do Phloem transport?

sugars, amino acids, organic material

11

What are the 2 types of leaves?

1. microphylls
2. megaphylls

12

What are microphylls?

leaves with a single vein

13

What are megaphylls?

leaves with a highly branched vascular system

14

Are gametophytes haploid or diploid?

haploid

15

What are 2 other features in vascular plants not found in other plants

1. leaves
2. roots

16

Gametophytes produce _____ gametes by _____

haploid, mitosis

17

are sporophytes diploid or haploid?

diploid

18

Sporophytes produce ____ _____ by ______

haploid, spores, meiosis

19

What are heterosporous plants?

-produce megaspores that become female gametophytes
-microspores that become male gametophytes

20

What are homosporous plants?

produce bisexual gametopytes

21

What are the 3 phyla of seedless nonvascular plants?

1. hepatophyta (Liverworts)
2. anthocerophyta (Hornworts)
3. brophyta (mosses)

22

What is the ecological importance of Peat moss?

can be used as source of fuel

23

How are seedless vascular plants grouped?

part of a grade

24

What is a grade?

based off similar characteristics rather than common ancestor

25

What are the 2 phyla of seedless vascular plants?

1. Lycophytes (club mosses)
2. Monilophytes (ferns)

26

What is the ecological importance of seedless vascular plants?

-caused global cooling during carboniferous
-formed coal deposits

27

What is an integument?

-2n
-protective layer for the seed

28

How many integuments in gymnosperms? angiosperms?

2,3

29

What is a megaspore?

-1n
-larger (female?) spore

30

What is a seed?

embryo and nutrients surrounded by a protective coat