The primate ancestors, tree-dwelling insectivores, had two distinct evolutionary advantages: grasping fingers and toes, and
A. a complete digestive tract.
B. hair.
C. binocular vision.
D. mammary glands.
Answer: C
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In chordates, which mesoderm structure forms during gastrulation and provides structural rigidity along the dorsal anterioposterior axis of the embryo?
A. archenteron B. neural tube C. notochord D. epidermis E. intestinal tract
In the first stage of the ovarian cycle, what gamete cell starts to develop?
a. polar body b. primary oocyte c. secondary oocyte d. follicle cells e. corpus luteum cells
The liver is commonly damaged if drugs or other toxins are over consumed. Why? What will be an ideal response?
Plankton consists mainly of microscopic organisms that float in the water
____________________ Indicate whether the statement is true or false.