Seeds

Question 1

What trait do all seeded plants share?

Answer 1

a eustele (vasculature in cylindrical bundles around a pith)

Question 2

In what organ is secondary growth controlled?

Answer 2

lateral meristem

Question 3

What is a key difference in the megaspores of seeded plants versus in seedless plants?

Answer 3

megaspores are retained to the ovule and are not shed from the parent plant

Question 4

What structure does the megaspore mature into?

Answer 4

female gametophyte (produces egg cells)

Question 5

What structure does the microspore mature into?

Answer 5

male gametophyte (produces pollen cells)

Question 6

What are the four structures found within a male gametophyte of seeded plants?

Answer 6

• sterile cell
• spermatogenous cell
• pollen grain
• pollen tube nucleus

Question 7

What is the difference between monoecious and dioecious?

Answer 7

monoecious = “same house”, female and male parts within the same individual

dioecious = “two houses”, female and male parts on separate individuals