Want to help me finish biology? I forgot my book D:?

Question

Coal consists of the fossilized remains of the ancestors of

a. club mosses

b. horsetails

c. ferns

d. equisetum

Which plants have stems containing abrasive silica crystals and are the only living genus of the phylum Arthrophyta?

a. ferns

b. lycophytes

c. club mosses

d. horsetails

Which group of plants have underground stems called rhizomes and leaves called fronds?

a. Scouring rushes

b. Arthrophytes

c. Ferns

d. Club mosses

During the dominant stage of their life cycle, ferns are

a. haploid sporophytes

b. diploid sporophytes

c. haploid gametophytes

d. diploid gametophytes

in the fern life cycle, a small, heart-shaped haploid gametophyte develops immediately after the germination of a

a. sorus

b. gamet

c. egg cell

d. spore

What can you infer about the needs of ferns from the fact that they thrive on the floors of thick forests?

Answer 1

yeah what the first dude said

Answer 2

A popular answer to this type of excuse ("forgot my book"), coupled with a long list of homework questions, is: if you can type these all into Yahoo answers, then you can use Google & Wikipedia to research the answers for yourself.

The benefit of doing that is that you'll understand why particular answers are correct.

Added: OK, fair enough, but it's still "six questions in one" and that's also an unpopular model here. People tend to be much more accommodating when you ask one question at a time, even if it is obvious that it's a homework question.