Double fertilization produces a ________ embryo and a ________ endosperm.
A. haploid; triploid
B. diploid; triploid
C. haploid; diploid
D. diploid; haploid
E. triploid; diploid
Answer: B
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Answer the following statements true (T) or false (F)
1. Maternal effect genes are inherited via the mitochondria. 2. Epistasis often involves genes of an enzymatic pathway. 3. The actions of Xist result in an organism that is a phenotypic mosaic. 4. In biparental inheritance, paternal and maternal gametes provide chloroplasts to the zygote. 5. Genomic imprinting can result in offspring with identical genotypes that have different phenotypes.
Which groups of plants have at least some members that possess tissues capable of transporting water and nutrients?
_____ spermatophytes. _____ lycophytes. _____ bryophytes. _____ tracheophytes. _____ embryophytes.
A parasite is also a(n):
A. mutualist B. heterotroph C. nitrogen fixer D. autotroph E. methanogen
Even if you quit smoking, the damage to your lungs is already done and they will not return to normal.
Answer the following statement true (T) or false (F)