What evolutionary advantage would be recognized by separating the gametes as heterosporous do?A. Greater chance of cross fertilizationB. Higher percentage of reproductionC. More gametes being producedD. Less chance of mixing allele within a population
Double fertilization occurs when:A. the sperm and tube nuclei fertilize the egg.B. two sperm cells fertilize the two polar nuclei.C. one sperm fuses with the egg and the other sperm fuses with both polar nuclei.D. the polar nuclei fuse with the egg after it has fused with the sperm.E. None of these
Double fertilization produces a _____ embryo and a _____ endosperm.A. haploid; diploidB. diploid; haploidC. diploid; triploidD. triploid; diploidE. haploid; triploid
What is the difference between a follicle and a legume?
What is the difference between an indehiscent dry fruit and a dehiscent dry fruit?
What are the key structures in a fern vs a flowering plant that confer dispersal? Compare and contrast the structures.
What are the key structures in a flowering plant versus a fern that confer genetic diverstiy? Explain.
What is not a morphological adaptation gymnosperms have undergone to reduce water loss.A. Developed a thick cuticleB. Reduced size of leavesC. Stomata are in sunken pitsD. They grow closer to water sources
Which plants are characterized by conducting system, the possession of cuticles, specialized stems, and roots, stomata, and, in many species, seeds?A. liverwortsB. mossesC. tracheophyteD. horsetailsE. club mosses
Seed plants (Angiosperms and Gymnosperms) all have non-motile sperm. When looking at ALL ancestral plants, this would be a:A. Synapomorphic traitB. Symplesiomorphic trait
The pollen grain is a male gametophyte. In gymnosperms, it travels to the female by:A. WindB. WaterC. InsectsD. Birds
Why is endosperm important?A. It is the first step in plant reproduction.B. It is how the sperm is produced.C. It is a source of food for the embryo.D. It increases genetic diversity.
Which of the following correctly lists the plant examples from those that evolved earliest in evolutionary history to those that appeared later?A. mosses, roses, fernsB. ferns, roses, mossesC. mosses, ferns, rosesD. roses, ferns, mosses
What is the process called where a fruit develops without fertilization?
What is formed by the union of male and female gametesA. sporesB. zygotesC. seedsD. embryo sacs