Which of these is NOT a reason that Mendel used pea plants as a model to study inheritance?
A. There are many varieties with distinct and different characteristics.
B. They cannot self-fertilize.
C. It is easy to control cross-fertilizations.
D. The varieties he chose would show the same variant for a trait in generation after generation.
E. They have large flowers.
B. They cannot self-fertilize.
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Which of the following is not true about meristems?
A. They can be apical or lateral. B. Meristematic cells divide into two cells, one of which remains a meristem cell and another that becomes a plant body cell. C. Apical meristems give rise to three types of embryonic tissues. D. Meristematic cells are found only in eudicots and not in monocots. E. They are responsible for primary and secondary growth.
Which of the following correctly reflects the division of the history of life on Earth, from most inclusive to least inclusive?
A. epoch - period - era B. epoch - era - period C. era - epoch - period D. period - epoch - era E. era - period - epoch
Structure in the living world is organized into hierarchical levels. Which of the following correctly lists these from least inclusive to most inclusive?
A) cell, molecule, organ, organ system, tissue, organism B) molecule, cell, tissue, organ, organ system, organism C) molecule, cell, organ, organ system, tissue, organism D) cell, molecule, tissue, organ, organ system, organism
Which of the following statements regarding the association of hepatitis B with liver cancer is FALSE?
A) Geographic areas with a high incidence of liver cancer also have a high prevalence of hepatitis B. B) The HBV genome has been found integrated into hepatic cancer cells. C) Hepatic cancer cells typically express HBV antigen. D) Chronic carriers of the virus are 200 times more likely to develop hepatic cancer. E) Vaccination does not provide protection against the development of hepatic cancer.