Angiospermidae

Question 0

What is the key benefit of co-evolution?

Answer 0

Animals create a degree of reliability

Question 1

Reasons for success of the angiosperms

Answer 1

Co-evolution

Self incompatibility

Question 2

What are the key components of a megagametophyte?

Answer 2

Ovule with 2 integuments
8 nuclei in 7 cells
2 synergid cells
1 egg cell
2 polar nuclei in one cell
3'antipodal cells

Question 3

What are the synapamorphies of the Angiospermidae?

Answer 3

Xylem vessels
Carpel and fruit
Tectate microspore wall
Double fertilisation

Question 4

What is the predecessor of the nucellus?

Answer 4

Mega sporangium

Question 5

What is the descendent of megagametophyte in angiosperms?

Answer 5

The embryo sac

Question 6

What is the predecessor to the synergid cells?

Answer 6

Archegonium

Question 7

What is the predecessor to the inner integument?

Answer 7

The integument

Question 8

What is the predecessor to the outer integument?

Answer 8

The seed-fern cupule

Question 9

What is the predecessor to the stamen?

Answer 9

Seed fern branch with microsporangia

Question 10

What is the predecessor to the petal?

Answer 10

The sterile stamen

Question 11

What is the predecessor to the sepal?

Answer 11

A bract or leaf

Question 12

What are the parts of the carpel?

Answer 12

Stigma
Style
Ovary
Ovule

Question 13

What are the parts of the stamen?

Answer 13

Anther

Filament

Question 14

What is the believed common ancestor of flowers?

Answer 14

The archaefructus

Question 15

Which xylem vessel would a gymnosperm have?

Answer 15

A tracheid

Question 16

What xylem vessel would an angiosperm have?

Answer 16

A vessel element

Question 17

Describe the structure of a tracheid

Answer 17

It is a hollow tube with pits covered by membrane that allow water and solutes and can move between cells.