Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
3 Cards in this Set
- Front
- Back
|
What is the difference between the following: gamete, seed, spore, and pollen. |
Gamete: a mature haploid make our female germ cell Seed: a flowering plants unit of reproduction, capable of developing into another plant Spore: a minute one called reproductive unit capable of creating a new plant without sexual fusion Pollen: microscopic grains discharged from the name part of a plant that can fertilize a female ovule |
|
|
What are the four extant groups of gymnosperms? |
Coniferophyta, cycadophyta, ginkophyta, gnetophyta |
|
|
Describe the ovule producing structures of conifers vs flowers |
Conifer: the ovule has a strong outer cover called an integument with a functional megaspore and a megasporangium surrounding the megaspore. The micropyle is a small opening at the top of the ovule. The megaspore becomes a female gametophyte and is fertilized by pollen, the make gametophyte, becoming a seed with a young sporophyte. In flowers the ovule is located in the center of the plant in the ovary. The pollen/microsporangia is going in the anthers which pollinate the stigma and the ovaries. |
