Which statement is true?
a. Gorillas and orangutans belong to genus Pongo.
b. Monkeys use their knuckles for support while walking.
c. All species of apes are capable of climbing trees.
d. Arboreal gibbons display pronounced sexual dimorphism.
c. All species of apes are capable of climbing trees.
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Sharks live in seawater. Their tissues are isotonic to seawater, but their concentrations of sodium ions, potassium ions, and chloride ions in cells and extracellular fluids are similar to those of freshwater fishes
How is that possible? A) Urea and trimethylamine oxide contribute to intra- and extracellular osmolarity in shark tissues. B) Metabolic intermediates of sharks tie up intracellular chloride and potassium ions. C) Their blood is hypotonic to their tissues. D) They excrete large quantities of electrolytes.
Olfactory receptors are located in which one of the following?
A) taste buds B) muscles C) upper part of nasal passages D) skin surrounding nasal openings E) upper regions of mouth
Polyploidy is
A. common in plant species. B. common in fungal species. C. common in animal species. D. common in bacterial species. E. All answers are correct.
Photosynthetic pigments in its membrane What part of the chloroplast has photosynthetic pigments in its membrane?
a) granum b) mesophyll c) chlorophyll d) thylakoid e) stroma