Midterm 2 Additional Information

Question 1

Another synapomorphy of eukaryotes

Answer 1

flagellated cells

Question 2

Have gametophyte-dominant life cycles

Answer 2

mosses (and most nonvascular land plants)

Question 3

Have sporophyte-dominant life cycles

Answer 3

ferns and gymnosperms

Question 4

Do algae undergo alternation of generations?

Answer 4

Depends on whether algae undergoes meiosis or reproduces to create multicellular structures first

Question 5

Vascular tissue only found in ____.

Answer 5

vascular seedless plants and vascular seed plants

Question 6

Components of vascular tissue

Answer 6

lignin, tracheids (gets fluid through vascular tissue), pores
-note that mosses don’t have lignin

Question 7

What sets chytrid fungi apart from other fungi?

Answer 7

Flagellated gametes and spores (swimming)

Question 8

Basdiomyceaea have ____.

Answer 8

basidea cells

Question 9

Are lophotrochozoans monophyletic?

Answer 9

Yes

Question 10

Synapomorphy of ecdysozoans

Answer 10

molting: shedding exoskeleton or external covering (how they grow)

Question 11

Key features of arthropod (3)

Answer 11

• segmented body (organized into prominent regions or tagmata)
• exoskeleton
• jointed appendages

Question 12

True or false: All land plants go through alternation of generations.

Answer 12

True

Question 13

Characteristics of nonvascular land plant life cycle (2)

Answer 13

• sperm have flagella

- gametophyte-dominated

Question 14

Characteristics of seedless vascular land plant life cycle (2)

Answer 14

• sperm have flagella

- sporophyte-dominated

Question 15

Characteristics of gymnosperm life cycle (4)

Answer 15

• wind pollinated
• male and female cones
• involves pollen grain (male) and pollen tubes
• seeds are wind/animal dispersed

Question 16

Characteristics of angiosperm life cycle (3)

Answer 16

• anthers and ovaries
• pollination by wind/animals
• double fertilization: zygote (2n) and endosperm (3n)

Question 17

Characteristics of general fungi life cycle (3)

Answer 17

• heterokaryotic cells
• plasmogamy and karyogamy
• sexual and asexual portions

Question 18

Characteristics of chytrid fungi life cycle (2)

Answer 18

• motile gametes and spores

- alternation of generations

Question 19

Characteristics of fungi life cycle with mushrooms (2)

Answer 19

• mushrooms, mycelia, basidia are dikaryotic

- no alternation of generations