Which of the following statements concerning the relationship of energy expenditure to body size in animals is TRUE?
A. Large endotherms have higher mass-specific metabolic rates (O2/g tissue/hour) than small endotherms.
B. Large ectotherms have lower mass-specific metabolic rates than small ectotherms.
C. There is an inverse (i.e., negative) relationship between the TOTAL energy used by an animal and its body size.
D. Only endotherms show an inverse relationship between specific metabolic rate and body size.
E. Only ectotherms show an inverse relationship between specific metabolic rate and body size.
B. Large ectotherms have lower mass-specific metabolic rates than small ectotherms.
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Use of cytokinins has had wide application in the horticultural industry because cytokinins are used in:
A. tissue cultures B. fruit production C. stem elongation D. flower maturation E. root development
What is the genetic consequence of a homozygous translocation?
A) Inviable gamete formation (semisterility) B) Gene duplications and deletions C) Formation of abnormal chromatids following crossing-over D) Abnormal pairing during meiosis E) An alteration in the linkage relationships of genes
You drive a nail into a tree that is 10 feet tall, and come back 10 years later. The tree is now 30 feet tall, but the nail is the same distance from the ground. This is because the tree grows up from
A. the apical meristem only. B. the lateral meristem only. C. both the lateral and apical meristems. D. the root tip. E. the node.
Which statement best describes the relationship between a tissue and an organ system?
A) The tissue level of organization is more inclusive than the organ system level. B) Tissues are not composed of cells; organ systems are composed of cells. C) A tissue cannot exist unless it is a component of an organ system, whereas an organ system can exist independently of tissues. D) An organ system includes tissues.