What surround stomata in plant leaves and can collapse to close stomata and conserve water?
Ans: guard cells
You might also like to view...
A male chicken (rooster) could be __________ for a "Z-linked" gene.
a) only homozygous b) only heterozygous c) homozygous or heterozygous d) only hemizygous
The calcium-rich remains of protists are now found
a. in sea floor sediments. b. in limestone rock formations. c. in the white cliffs of Dover, England. d. in the Egyptian pyramids. e. in all of these places.
Selectins mediate interactions between which of the following?
A) leukocytes and blood vessel endothelial cells B) muscle cells and ECM C) nerve cells and other nerve cells D) intestinal epithelial cells with neighboring cells E) skin cells in different skin layers
In an adult human stem cell that has a total of 48 chromosomes, how many chromatids are present at prophase of mitosis?
A) 12 B) 24 C) 48 D) 72 E) 96