Plants 3

Question 1

what characteristic is shared by vascular and nonvascular plants?

Answer 1

spores

Question 2

Lycophytes are sister to what group?

Answer 2

Euphyllophytes

Question 3

A structure produced by some green algae but never in land plants is?

Answer 3

Phycoplast

Question 4

What structure/characteristic is found in ferns but not seed plants?

Answer 4

Antheridia

Question 5

Is the nucleus megasporangium of a pine haploid or diploid?

Answer 5

diploid

Question 6

The sporophyte of non vascular plants is independent or dependent?

Answer 6

dependent

Question 7

the sporophyte of vascular plants are independent or dependent?

Answer 7

independent

Question 8

Do progymnosperms make seeds/ovules?

Answer 8

NO

Question 9

Flowers have highly reduced ____?

Answer 9

gametophytes

Question 10

Name a specific species that was a porgymnosperm

Answer 10

Archaeopteris

Question 11

Name an example of a seeded fern that went extinct

Answer 11

Medullosa

Question 12

Name the 4 living gymnosperm clades

Answer 12

conifers, ginkos, cycads, gnetophytes

Question 13

Describe cycads

Answer 13

around 300 species, tropical/subtropical, large compound leaves (palm trees), dioecious sporophytes, cones, much parenchyma, flagellated sperm in pollen tube

Question 14

Describe Gnetophytes

Answer 14

around 70 species, double fertilization, ancient, some lack archegonia, insect pollination, compound cones

Question 15

Name the 3 genera of Gnetophytes

Answer 15

Gnetum ,Ephedra, Welwit

Question 16

Name the 3 genera of Gnetophytes

Answer 16

Gnetum ,Ephedra, Welwit WEG

Question 17

Describe Gnetum

Answer 17

dioecious tree or vine that lives in the wet tropics, no archegonia, insect pollination

Question 18

Describe Ephedra

Answer 18

looks like horsetails (Equistrium), dioecious and monoecious, vessels, double fertilization, flower like cones

Question 19

Describe Ephedra

Answer 19

looks like horsetails (Equistrium), dioecious and monoecious, vessels, double fertilization, flower like cones. Drug Ephedrine, raises blood pressure, used for weightloss

Question 20

Describe Welwits

Answer 20

stem buried in desert soils, dioecious, cone bearing, forms vessels in xylem, no archegonia

Question 21

Describe Ginkgos

Answer 21

only 1 species, the Ginko. Dioecious sporophytes, flagellated sperm cells, known for dietary supplement, tolerant of pollution and pests

Question 22

Describe conifers

Answer 22

around 550 species, sporophyte with leaves, stems made of short and long roots

Question 23

Describe conifers

Answer 23

around 550 species, sporophyte with leaves, stems made of short and long roots, male and female cones

Question 24

In a pine male cone, the microspore mother cells are haploid/diploid

Answer 24

diploid

Question 25

Pinecone microspores undergo two mitotic divisions to produce a _____ celled microgametophyte

Answer 25

4

Question 26

Megaspore mother cells are haploid/diploid

Answer 26

diploid

Question 27

megaspores are haploid/diploid

Answer 27

haploid

Question 28

Out of 4 megaspores, ___________ die

Answer 28

three

Question 29

Embrionic leaves of a pine are called _________

Answer 29

cotyledons

Question 30

Name the 3 parts of a pine seed as well as their ploidy

Answer 30

seed coat (2n), female gametophyte tissue (n) and embryo (2n)

Question 31

Name the 4 unique characteristics of gymnosperm life cycles

Answer 31

1. male gametophytes move in air 2. no antheridia, pollen tube transports male gametes (internal fertilization 3. gametes produced after fertilization 4. seeds protected by seed coat and provides embryos w food supply