Why do oils form a significant part of the nutritional reserves in many seeds?
A. Oils store twice as much energy as an equivalent mass of starch.
B. Oils help keep the embryo hydrated, allowing the seed to survive in dry habitats.
C. Hormones diffuse more quickly through oils.
D. The oils reduce the density of the seed and allow for water dispersal.
E. Oils contain more mineral nutrients than carbohydrates.
Answer: A
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Identify the structure indicated by #2:
A. uterus B. cervix C. vagina D. ovary E. fallopian tube or oviduct
This primate is a Philippine tarsier, which has a tail longer than its body, and a brain about the same size of one of its eyes. Tarsiers have the largest eyes relative to their body size of any mammal, and it uses them to hunt the insects, lizards, and small birds that make up its diet. How is the Philippine tarsier classified?
a. Dermopterans
b. Strepsirrhines
c. Haplorhines
d. Catarrhines
Which of the following is a density-independent population-regulating factor?
A) a tornado B) a famine C) a parasite D) an outbreak of a new, lethal flu strain
What is the cause of hemolytic disease of the newborn?
A. The mother has eosinophilia during pregnancy. B. An O blood type mother produces anti-A antibodies which cross the placenta and react with the baby's A antigens. C. Antibodies of an A or B blood type mother cross the placenta and react with baby's O antigens. D. The mother produces anti-Rh antibodies which cross the placenta and react with baby's Rh antigens. E. The mother's mast cells degranulate in the placenta, damaging it.