a) Write any three characteristic features of chordates.
b) Differentiate between: i) monocots and dicots
ii) cryptogams and phanerogams
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Nitrogenous Waste in Terrestrial Animals: The Urea Cycle
Mammals, including humans, are the primary producers of urea. Because they secrete urea as the primary nitrogenous waste product, they are called ureotelic animals. Urea serves an important role in the metabolism of nitrogen-containing compounds by animals.
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- a. have a notochord
- they are triploblastic
- they have bilateral symmetry
- b. monocot - only one cotyledon
dicot - two cotyledons
2. cryptogam - hidden reproductive system
phanerogam - reproduction in a flower
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