Question

Which of the following phyla is correctly matched with its two general characteristics? (1)Mollusca :Normally oviparous and development through a trochophore or veliger larva (2)Arthropoda :Body divided into head, thorax and abdomen and respiration by tracheae (3)Chordata :Notochord at some stage and separate anal and urinary openings to the outside (4)Echinodermata:Pentamerous radial symmetry and mostly internal fertilization

Answer 1

The nephrons of the kidneys process blood and create urine through a process of filtration, reabsorption, and secretion. ... Nitrogenous wastes excreted in urine include urea, creatinine, ammonia, and uric acid. Ions such as sodium, potassium, hydrogen, and calcium are also excreted.