Which type of cell does not have a cell wall?
a. animal
b. plant
c. bacteria
a
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In plants, most chloroplasts are inherited from the maternal plant because maternal gametes contribute the most __________ to the zygote.
A. cytoplasm B. mitochondria C. ribosomes D. chlorophyll E. cytoplasm and mitochondria
A plant’s response to the relative lengths of light and dark periods in its environment during each 24-hour period is a
phenomenon called ____.
a. gravitropism b. photoperiodism c. thigmotropism d. circadian rhythms e. phototropism
Differentiation is the process by which cells
a. mature into larger cells. b. change from one type of muscle to another. c. allows cells to change to fix injuries. d. turn on all the genomic genes. e. become specialized by turning on some genes and turning off others
The diverse body plans seen in Animalia apparently developed during the:a
Precambrian b. Cambrian. c. Mesozoic. d. Silurian. e. Devonian.