Which are characteristics of horesetails? check all that apply.

* they have xylem and phloem.
* they have true roots.
* they grow near water.
* they lack true stems.
* they usually grow less than 5 centimeters.

Which technically is nasa developing that will astronauts reach mars

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red. b) the pollen grains will be pure blue. c) the pollen grains will have red interiors and blue exteriors. d) the pollen grains will have blue interiors and red exteriors.

What sre the effects of hemolytic disease of a newborn