Try these links for your research. Also, an EXCELLENT place to go is the public library's Encyclopedia Britanica Kids.

Seaweed

Moss

Ferns

Ferns and Horsetails

Conifer Trees

Gymnosperms

Great videos about plants

For your questions about plant science

SANTA BARBARA PUBLIC LIBRARY ENCYCLOPEDIA BRITANNICA FOR MIDDLE SCHOOL STUDENTS LOG IN PAGE

 Monterey Bay Aquarium videos for phylum project
Try this website to see  videos of many ocean critters. They are arranged in ABC order.