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A robin has difficulty pulling an earthworm from its earthen burrow because of small chitinous bristles called
Urinary System
A group of organs in the body, including the kidneys, ureters, bladder, and urethra, responsible for the production, storage, and elimination of urine.
Kidneys
Pair of bean-shaped organs located below the ribs on either side of the spine, responsible for filtering waste products and excess fluids from the blood to form urine.
Cortex
The outer portion of the kidney.
Kidney
A pair of bean-shaped organs in the vertebrate urinary system, responsible for filtering waste products from the blood and excreting them as urine.
Q4: Primitively wingless hexapods are the<br>A)neuropterans.<br>B)thysanurans.<br>C)zorapterans.<br>D)isopterans.<br>E)hemipterans.
Q24: Completely terrestrial salamanders<br>A)have succeeded in avoiding the
Q29: The mouth of the brittle star is
Q30: How do the various pigments in the
Q34: Arthropods are<br>A)carnivorous.<br>B)herbivorous.<br>C)omnivorous.<br>D)both carnivorous and herbivorous.<br>E)All of the
Q37: An enterocoelous animal has<br>A)a true coelom.<br>B)a pseudocoelom.<br>C)no
Q37: The spiral valve in the intestine of
Q38: The Sipunculans live in burrows and feed
Q39: The Anura differ from the Urodela because
Q49: Gas exchange in the earthworm occurs through