Gymnosperms Flashcards Preview

Non-Flowering Plants > Gymnosperms > Flashcards

Flashcards in Gymnosperms Deck (9)
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1
Q

Seed

A

mature ovule containing an embryo

2
Q

Ovule

A

an integument megasporangium

3
Q

Integument

A

outermost layer enveloping the nucellus (develops seed coat)

4
Q

nucellus

A

equivalent to megasporangium

5
Q

Micropyle

A

opening in the integuments through which the pollen tube enters

6
Q

pollen grain

A

a microspore containing a mature or immature microgametophyte

7
Q

prothallial cell

A

remnants of the vegetative gametophyt

8
Q

generative cell

A

vestiges of the ancestral antheridia

divides to form a sterile cell and spermatogenous cell

9
Q

tube cell

A

cell that develops into the pollen tube, structure that carries male gametes into ovule