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How plants solve the problem of transporting substances throughout their tissues?
In the bryophytes the substance transport is done by the diffusion. In the tracheophytes (pteridophytes, angiosperms and gymnosperms) there are specialized conductive vessels, the xylem that carries water and mineral salts and the phloem that conducts organic material (sugar).
Conjugation - Patterns of Sexual Reproduction Conjugation is a temporary union among two individuals of the same species, during which the original macronucleus disintegrates,
Ammonification Many heterotrophic bacteria actinomycetes and fungi in soil and water metabolise the organic nitrogen and release it in an inorganic form as ammonia. This proce
Measurements of the level of pollution There are many factor for finding the level of pollution in the waste waters that generally find out the quantity of organic matter susp
Is transportation of gases in tracheophytes made through the vascular tissues? Carbon dioxide and oxygen are not transported by the xylem or phloem. These gases reach the cells
In a numeric pyramid is it possible for the base to be smaller than the other levels? Ever since the numeric pyramid represents the quantity of individuals in each trophic leve
Describe the terms diffusion, osmosis and filtration. Explain why each process is important for the human body.
What is Phylum Porifera in Classification of the Animal King? Sponges are the simplest form of animals. Their bodies are not organized in any specific pattern other than masses
Q. What is the destination of the notochord in protochordates and in vertebrates? In vertebrates the notochord disappears and gives birth to the spinal column known as vertebra
Which is plant tissues specialized in covering? The dermal tissues or covering tissues of the plants are the epidermis (that covers the leaves and the young stems and shoots) a
Medication delivered in the form of a pill contains an active ingredient or ingredients. Beside the drug itself, the pill also contains "fillers". The filler has several functions.
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