Plant Reproduction & Taxonomy and Systematics

Question 1

Meiosis

Answer 1

Diploid cell divides into 4 haploid cells

Question 2

Syngamy

Answer 2

2 haploid gametes fuse

-egg+sperm=zygote

Question 3

Sporophyte

Answer 3

Diploid individual or generation

-Makes haploid spores via meiosis

Question 4

Gametophyte

Answer 4

Haploid individual or generation

-Makes haploid gametes via mitosis

Question 5

Sex cells

Answer 5

Spores (haploid and created by meiosis)

Gametes (haploid egg and sperm and created by mitosis)

Question 6

Gametangia

Answer 6

Sex organs that makes gametes via mitosis

• Surrounded by sterile layers to protect from desiccation
• Archegonia and Antheridia

Question 7

Sporangia

Answer 7

Makes spores via meiosis

• Sporangium wall (sterile protective layer)
• Sporogenous tissue (produces spores)

Question 8

Archegonium

Answer 8

Egg
-Venter: surrounds the egg and prevents desiccation
Neck, neck canals, and neck canal cells

Question 9

Antheridium

Answer 9

Spermatogenous tissue

• Sterile jacket-protects tissue
• Stalk

Question 10

Spores

Answer 10

Haploid reproductive cells produced via meiosis

• Occur in tetrads
• Resist desiccation
• Disperse on wind

Question 11

Homospory

Answer 11

1 kind of spores and sporangium

• Spores all the same size
• Gametes usually hermaphroditic
• Ancestral condition

Question 12

Heterospory

Answer 12

2 kinds of sporangia and spores

-Microsporangia and megasporangia

Question 13

Exosporic Gametophyte

Answer 13

Gametophyte that grows outside spore wall

-Usually green, photosynthetic, and homosporous

Question 14

Endosporic Gametophyte

Answer 14

Gametophyte that grows inside spore wall

-Usually not green, not photosynthetic, heterosporous

Question 15

Strobilus

Answer 15

Stem with a concentraion of sporangia and sporophylls

-Cone

Question 16

Linnaeus

Answer 16

Father of taxonomy

• taxonomic hierarchy
• binomial nomenclature

Question 17

Division ending

Answer 17

-ophyta

Question 18

Class ending

Answer 18

-opsida

Question 19

Order ending

Answer 19

-ales

Question 20

Family ending

Answer 20

-aceae

Question 21

Genus ending

Answer 21

none

Question 22

Species ending

Answer 22

Binomial

Question 23

Order of taxonomic hierarchy

Answer 23

King David Came Over From Greece Singing

Kingdom, Division, Class, Order, Family, Genus, Species

Question 24

Binomial Nomenclature structure

Answer 24

1. Genus name (cap and italicized)
2. Specific epithet (lower case and italicized)
3. Authority: abbreviation of person who named the species

Question 25

Linnaeus classification forms what?

Answer 25

Nested groups

Question 26

Lamarck

Answer 26

Early proponent of evolution

• Change over time
• Inheritance of acquired characteristics

Question 27

Darwin

Answer 27

Natural selection

Descent with modification

Question 28

Postulate of Nat Selection

Answer 28

1. Organisms are variable for traits
2. Variation is heritable
3. Some individuals are more fit than others
4. Variation in traits and fitness is not random

Question 29

Evolution

Answer 29

Change in trait frequency in the next generation