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Unformatted text preview: chickadees (A) use auditory cues to find stored food (B) have a spatial memory that enables them to locate storage sites (C) have a propensity to inspect and pull at the covers wherever they are located (D) cannot find a storage site if they cannot see the food in it (E) rely on the visual cues provided by the opening to a storage site to locate stored food 51. Bird species X stores seeds in a large number of separate caches in the summer and then locates the caches in the winter. Compared with a bird species that does not store seeds, species X can be expected to have a proportionately larger (A) (B) (C) (D) (E) cerebellum hippocampus optic lobe hypothalamus medulla 48. The receptive surface for pollen on an angiosperm flower is the (A) (B) (C) (D) (E) anther corolla ovary style stigma 49. Immediately after fertilization in animals, the first structural and biochemical changes in the egg are initiated by (A) (B) (C) (D) (E) new gene transcription the release of Ca2+ from internal reservoirs the initiation of DNA synthesis a lowering of cytosolic pH a sudden drop in ATP levels 52. Functionally, Hensen’s node is to a chick embryo as the (A) (B) (C) (D) (E) animal pole is to a frog embryo blastopore dorsal lip is to a frog embryo ectoderm is to a bird embryo vegetal pole is to a frog embryo anterior pole cells are to a Drosophila embryo GO ON TO THE NEXT PAGE.
Unauthorized copying or reuse of any part of this page is illegal. 22 53. The oxygen consumption of marine crabs acclimated to either 10°C or 20°C was measured at environmental temperatures of 5°C to 25°C to produce the following graph. Which of the following can be correctly concluded from the information in the graph? (A) Acclimation temperature does not affect the rate of oxygen consumption. (B) Crabs have higher rates of oxygen consumption when measured at 10°C than when measured at 20°C. (C) Oxygen consumption is higher in the 10°C-acclimated crabs than in the 20°C-acclimated crabs at each test temperature. (D) Acclimation to a high temperature induces a high rate of oxygen consumption at all test temperatures. (E) This pattern of acclimation produces complete metabolic compensation. GO ON TO THE NEXT PAGE. Unauthorized copying or reuse of any part of this page is illegal. 23 54. The outermost tissue of a tree trunk that is 6 feet in diameter would most likely be (A) (B) (C) (D) (E) epidermis cork cortex phloem xylem 56. Which of the following cells or tissues are characteristically found in the roots, but not the stems, of angiosperms? (A) (B) (C) (D) (E) Parenchyma and collenchyma Epidermis and cork Pericycle and endodermis Vessel elements and tracheids Sieve tube members and companion cells 55. Which of the following is the tissue that is most important in plant survival during droughts and why? (A) Vascular tissue, because the phloem keeps the plant supplied with water (B) Vascular tissue, because the xylem can store considerable amounts of water (C) Ground tissue, because water can be stored in the sclerenchyma for use during droughts (D) Ground tissue, because the parenchymal tissue provides hormonal cues to stop water loss (E) Epidermal tissue, because it is covered with a waxy cuticle and includes droughtresponsive stomata Species Encelia farinosa Haworthia attenuata Bursera latiflora Scilla violaceae Agave deserti Stomata mm−2 on Leaves Upper Epidermis 248 15 0 3 40 Lower Epidermis 355 25 272 35 32 57. The data above were colle...
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- Spring '14