Tracheophyte plants are characterized by all of the following except
A. stomata.
B. seeds.
C. homosporous or heterosporous.
D. a specialized water conducting system.
E. a waxy cuticle.
Answer: B
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Addition of mitosis-promoting factor (MPF) to germinal cells in the skin arrested in G2 would lead to
____.
a. cessation of cell division b. the cells entering prophase c. the cells undergoing cytokinesis d. cell death e. nothing happening
Which group of adult tissues is derived from mesoderm?
a. lining of digestive tract, liver, pancreas b. muscles, bones, cartilage c. skin, brain, retina d. skin, liver, pancreas e. lining of respiratory tract, thyroid gland, urinary bladder
Four of the five answers listed below are related by a common phase of mitosis. Select the exception
a. chromosomes align at the spindle equator b. sister chromatids become individual chromosomes c. centromeres divide d. the chromosomes move apart e. spindle microtubules shorten, pulling chromosomes toward the poles
In the garden pea, Mendel found that tall (D) green pods (G) and inflated pods (C) were dominant to
their alleles, dwarf (d) yellow pods (g), and constricted pods (c). Given the following genotypes, determine the chances of producing the offspring shown. (a) DD Gg Cc ? Dd Gg cc ? DD gg Cc (b) DD Gg Cc ? Dd Gg Cc ? tall green pod, constricted pod (c) Dd Gg Cc ? Dd GG cc ? tall green pod, inflated pod (d) Dd Gg Cc ? Dd Gg Cc ? D_ G_ cc (e) Dd Gg Cc ? Dd gg CC ? D_ G_ C_ (f) Dd gg cc ? DD Gg cc ? tall green pod, inflated pod (g) Dd Gg Cc ? Dd Gg Cc ? Dd Gg Cc (h) Dd Gg Cc ? Dd Gg Cc ? dd gg cc What will be an ideal response?