The last common ancestor of gymnosperms and angiosperms possessed which of the following characteristics? Select all correct choices
A. pollen
B. flowers
C. seeds
D. vascular tissues
E. double fertilization
A,C,D
Biology & Microbiology
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The system of fungal filaments that penetrates and grows through the substrate is called a(n)
A. exoskeleton. B. hyphal compartment. C. mushroom. D. mycelium. E. sporangium.
Biology & Microbiology
BRCA1 and p53 genes are classified as ____________________ genes. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
Smallest unit of life:
a. atom b. cells c. electrons
Biology & Microbiology
Erythroblastosis fetalis can be prevented by
A) Treating the mother with RhoGAM early in the pregnancy. B) Treating the fetus with immune globulin. C) Birth by cesarean section. D) Injecting the mother with antibodies against the Rh factor late in the pregnancy and after giving birth.
Biology & Microbiology