Which group of gymnosperms is characterized by deciduous fan-shaped leaves, ovules, and pollen produced on separate plants, and flagellated sperm.
A. Gnetophytes
B. Ginkgos
C. Cycads
D. Ferns
E. Conifers
Answer: B. Ginkgos
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When mature, the ovary is referred to as a(n) ____ that encloses the angiosperm seed
a. ovule
b. endosperm c. fruit d. carpel e. inflorescence
Achondroplasia is a form of dwarfism caused by a dominant allele. The homozygous dominant genotype causes death, so individuals who have this condition are all heterozygotes. If a person with achondroplasia mates with a person who does not have achondroplasia, what percentage of their children would be expected to have achondroplasia?
A. 75% B. 0% C. 50% D. 100%
Acheulian tools, e.g., hand axes, choppers, borers, and scrapers, are associated with which group of hominins?
a. Homo sapiens b. Homo habilis c. Homo erectus d. Australopithecus sediba e. Australopithecus africanus
What correctly describes how eukaryotic chromosomes are prepared for cell division?
What will be an ideal response?