These multicellular plants all have something in common, other than being autotrophic. unlike moss and liverworts, they can grow to great heights and survive in diverse environments. this is because there is a system for intercellular communication, that moves substances throughout the plant; water and nutrients up from the ground and glucose from photosynthetic tissue to all parts of the plant. what is responsible for this intercellular interaction in higher plants?

a) hormones
b) plasmodesmata
c) xylem and phloem
d) meristematic cells

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen

What molecule does hemoglobin decay into over time

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.