You have been assigned the task of identifying the cells in a plant tissue sample. Using your microscope, you determine the cells are living and their cell walls vary in thickness. Upon further observation, you note that the cells are arranged in strands just below the epidermal surface. What cell type do you determine the cells to be?
A. Sclerenchyma
B. Parenchyma
C. Sieve elements
D. Tracheids
E. Collenchyma
Answer: E
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Regarding seedless fruits, which of the
following is paired incorrectly?
a. seedless grapes--embryos abort b. bananas--natural triploid sterility c. seedless watermelons--induced triploid sterility d. navel oranges--sprouted from corms e. all of these are paired correctly
How must spindle microtubules attach to chromosomes during prometaphase of meiosis I?
a. Microtubules attach at the centrosomes. b. Microtubules attach to the chiasma. c. Spindle microtubules from one pole attach to one kinetochore, and spindle microtubules from the other pole attach to the other kinetochore in a pair of sister chromatids, just like in mitosis. d. Spindle microtubules from one pole must attach to both kinetochores in a pair of sister chromatids. e. Microtubules attach using their minus (slow assembling) ends.
In pea plants, tall plants are dominant over short, and green pods are dominant over yellow
If you crossed true-breeding tall, green-podded plants with true-breeding short, yellow-podded plants, and then crossed the F1 individuals among themselves, what proportion of the F2 offspring would you expect to be tall and yellow-podded? A) 3/16 B) 9/16 C) 1/16 D) 1/4 E) 3/4
What number process does information gathering correspond with?
What will be an ideal response?