The equivalent of a circulatory system in plants consists of two parts, the and the . A. root / leaf
B. xylem / phloem
C. stamen / pistil
D. zygote / endosperm

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.

What is the literal meaning of the term “binomial nomenclature? ” give an example of when it’s beneficial to use the scientific name of an organism

Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream? the ability to attract prey by glowing extra gills, for oxygen extraction the ability to grow larger extra fat, for warmth