Pores on the surface tissue of stems and leaves of plants that are able to open and close are called
a. tracheoles
b. stomata
c. sori
d. epipores
e. micropyle
Ans: b. stomata
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Diploid cells ____________________
a. have a complete set of homologous chromosomes b. do not have homologous chromosomes c. have 48 chromosomes d. undergo crossing over of homologous chromosomes during mitosis
Four of the following ideas are consistent with Darwinian evolution. Which one is the exception?
a. Individuals in a population are genetically variable. b. A struggle for existence exists among individuals of a population. c. Traits acquired during an individual's life are passed on to its offspring. d. A population is capable of producing more offspring than the environment can support. e. Individuals that are best adapted to their environment are more likely to survive and reproduce.
Carbon dioxide (CO2 ) in the atmosphere is absorbed by ________ and converted into biomass
A) the ozone layer B) other atmosphere gases C) photosynthetic organisms D) large land masses
A secretory protein that exits from the ER within a vesicle will head directly to the:
A) Golgi complex. B) plasma membrane. C) nucleus. D) mitochondria. E) cytosol.