Answer:
Pteridophytes are better known as the 'Vascular Cryptogams' because they possess vascular tissue for the conduction of water and food material.
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Difference between Bryophytes and Pteridophytes.
An allele<span> that expresses its phenotypic effect even when heterozygous with a recessive </span><span>allele
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Explanation:
mollusks and arthopods............
Each cell normally contains 23 pairs of chromosomes. For a total of 46.