| 1. 1 pt(s). |
Which illustration is an example of a multicellular organism? | ||
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A. |
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B. |
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C. |
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D. |
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| 2. 1 pt(s). |
The average production of sperm cells by a bull throughout the year is shown in the table below. In May, bulls produce a daily average of 6 ml of fluid containing sperm cells. How many million sperm cells would 1 ml of this fluid contain?
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A. | 1200 | |
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B. | 6000 | |
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C. | 36000 | |
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D. | 2000 | |
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| 3. 1 pt(s). |
In salmon farming, eggs and sperm extracted from adult fish are mixed together in shallow trays. What process in the life cycle of the fish will take place at this stage? | |
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A. | cell division |
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B. | fertilisation |
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C. | birth |
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D. | death |
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| 4. 1 pt(s). |
The diagram below shows three generations of cell division. How many cells should exist in the fourth generation?
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A. | 10 | |
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B. | 8 | |
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C. | 6 | |
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D. | 4 | |
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| 5. 1 pt(s). |
The diagram shows four stages in the development of a human after fertilisation. Between stages A and D, which process must occur?
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A. | sexual reproduction | |
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B. | cell division | |
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C. | extinction | |
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D. | fertilisation | |
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| 6. 1 pt(s). |
Saltwater plants of the same species were grown in soil in separate containers with 1 liter of water. All of the plants were the same height at the beginning of the experiment. Different amounts of salt were dissolved in each container as shown in the diagrams. All other conditions were held constant. Measurements for the final height of each plant are provided. What would the expected height of this same type of plant if it were grown in 1 liter of water with 2.5 grams of salt added?
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A. | 1cm | |
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B. | 5cm | |
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C. | 9cm | |
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D. | 12cm | |
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| 7. 1 pt(s). |
The diagram below which shows the process of sexual reproduction. Cell divission has occurred between stages
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A. | A and B | |
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B. | B and C | |
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C. | C and D | |
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D. | D and E | |
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| 8. 1 pt(s). |
The diagram below which shows the process of sexual reproduction. Fertilisation occurs at stage | |
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A. | A |
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B. | B |
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C. | C |
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D. | D |
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| 9. 1 pt(s). |
Examine the diagram below, which shows a form of reproduction. How does the nucleus of the daughter cell compare to that of the parent cell?
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A. | 50% the same | |
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B. | exactly the same | |
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C. | nearly the same | |
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D. | completely different | |
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| 10. 1 pt(s). |
The diagram below shows views of the same onion cells observed by a student using a light microscope before and after a treatment. What did the student most likely do to cause the difference between the two views?
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A. | increased the magnification | |
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B. | added stain to the cells | |
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C. | decreased the magnification | |
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D. | added water to the cells | |
