In seed plants, __________ allow reproduction without standing water. Fill in the blank(s) with the appropriate word(s)
pollen grains
You might also like to view...
Which blood vessel will carry blood away from the kidneys?
a. Hepatic vein b. Renal artery c. Brachial artery d. Renal vein e. Inferior vena cava
The single ventricle in an amphibian heart means the oxygenated and deoxygenated blood mix. How do amphibians manage to survive despite this inefficiency?
A. They keep their body temperatures high. B. They move very slowly. C. They transport oxygen across the skin. D. They keep gills into adulthood. E. They absorb large amounts of fluid.
The large intestines perform all of the following functions EXCEPT ____
a. absorption of nutrients b. absorption of water c. formation of feces d. absorption of vitamins e. elimination of feces
A situation in which the birth rate equals the death rate is called:
a. an intrinsic limiting factor b. exponential growth c. saturation d. zero population growth e. geometric growth