Select the reaction that is most likely to be a tropism.
A. plants bending away from a heat source
B. flowers blooming when it is warm
C. induction of seed dormancy
D. production of aerenchyma
Answer: A
You might also like to view...
Which of the following statements is false?
a. Cytotoxic T cells kill body cells that have been invaded by pathogens. b. The cell-mediated response is ineffective against a pathogen that has already entered the cytoplasm of a body cell. c. Cytotoxic T cells are produced by the bone marrow but mature in the thymus gland. d. Cytotoxic T cells are unable to destroy freefloating viruses they encounter in the bloodstream. e. Cytotoxic T cells secrete perforins that are able to punch holes in infected cells.
Water flowing inward through the endodermis moves next into the pericycle. Indicate whether the statement is true or false
For animals, the final hydrogen acceptor in cellular respiration is ____.
A. NADP+ B. sulfur C. oxygen D. magnesium E. phosphorus
Your study buddy is frustrated. "This book says that a single gene can make mice exhibit a certain behavior. That's ridiculous! How can you build any kind of neural circuit with just one gene?" What is your response?
A. "Some genes are longer than others, over 1000kb -- they have enough information to encode a full neural circuit." B. "What the book really means is: all else being equal, one variant of a gene is associated with higher levels of the behavior than the other variant of the gene. All the other thousands of genes are still needed to develop the brain. But variation in one gene can change how a certain neural circuit will behave." C. "If the book says so it must be true. Ours is not to question why." D. "Mice are a lot simpler than we are, and their brains are smaller. One gene is plenty for them to build a circuit."