In plants cellulose is a rigid tube that allows plants to maintain their form

which similar structure and support system is found in insects

a. exoskeleton

b. cytoskeleton

c. endoskeleton

d. musculoskeleton

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this