Living Environment - June 2011

46 Draw an arrow to indicate one part of the plant cell below that would not be found in an animal cell. The tip of the arrow must touch the part being identified. [1]

Base your answers to questions 47 and 48 on the information and chart below and on your knowledge of biology.

Body weight is considered to be a risk factor for diseases such as diabetes and high blood pressure. The Body Mass Index (BMI) chart can be used as a guide to determine if a person’s body weight puts them at risk for such diseases. A portion of this chart is shown
below.

47 The BMI for a person who is 5 feet 9 inches tall and weighs 170 pounds is between

(1) 24 and 25     (3) 27 and 28
(2) 25 and 26    (4) 29 and 30


48 Is the person described in question 47 at risk for diseases such as diabetes or high blood pressure? Support your answer. [1]

49 The diagram below represents a food web.


Which species would most likely be a decomposer?

(1) A     (3) C
(2) B     (4) D

Base your answers to questions 50 and 51 on the passage below and on your knowledge of biology.


Plants of the snow lotus species, Saussurea laniceps, are used in Tibet and China to produce traditional medicines. These plants bloom just once, at the end of a seven-year life span. Collectors remove the taller blooming plants, which they consider to have the best medicinal value. Some scientists are concerned that the continual selection and removal of the tall plants from natural ecosystems may result in a change in the average height of the snow lotus in future populations.

Note: The answer to question 50 should be recorded on your separate answer sheet.

50 The removal of the taller plants is an example of

(1) genetic engineering   (3) selective breeding
(2) direct harvesting       (4) asexual reproduction

51 State one way that the removal of the taller snow lotus plants from ecosystems interferes with the process
of natural selection. [1]

Base your answers to questions 52 through 55 on the information below and on your knowledge of biology.

A biology class conducted an experiment to determine the rate of respiration of yeast in bread dough at various temperatures. Bread dough will rise due to the production of carbon dioxide by the yeast present in the dough. An equal amount of dough was placed in the bottom of each of five graduated cylinders. Each cylinder was then placed in a different water bath to maintain a particular temperature. A diagram of the setup is shown below.

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