The two tubes found in vascular plants are the ? a. stamen and pistil
b. xylem and phloem
C. stem and leaves
d. pollen and ovule

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits