Warm-Up
Which cell structures are found in plant cells, but not in animal cells? Check all that apply.
cell wall
cell membrane
endoplasmic reticulum
nucleus
chloroplasts
mitochondria

In which situations is the principle of cross-cutting relationship useful in determining relative age?

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.

Cloning an individual usually produces orangisms that (1) contain dangerous mutations (2) contain identical genes (3) are identical in appearance and behavior (4) produce enzymes different from the parent