5090_w24_qp_12
A paper of Biology, 5090
Questions:
40
Year:
2024
Paper:
1
Variant:
2
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10
Four leafy shoots cut from the same plant were put into beakers of coloured water and left in rooms with different temperatures. In two rooms, electric fans were set up to blow air over the stems. The time taken for the coloured water to reach the leaves was measured for each stem. In which stem will the coloured water reach the leaves the fastest?
7. Transport in flowering plants  →  7.2. Transpiration and translocation
7. Transport in flowering plants  →  7.1. Uptake and transport of water and ions
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15
The diagram shows how some apparatus is set up to investigate respiration in germinating seeds. coloured oil drop capillary tube germinating seeds wire mesh sodium hydroxide (to absorb carbon dioxide) water-bath thermometer The coloured oil drop moves along the capillary tube. What causes the movement of the coloured oil drop?
7. Transport in flowering plants  →  7.2. Transpiration and translocation
16. Development of organisms and continuity of life  →  16.3. Sexual reproduction in plants
3. Movement into and out of cells  →  3.1. Diffusion and osmosis
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21
Vaccination helps to control the spread of transmissible diseases. The MMR vaccine is given to young children and provides immunity against a disease called measles. The graph shows the percentage of the population of a country vaccinated using the MMR vaccine and the number of cases of measles over time. 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 percentage of population vaccinated using the MMR vaccine number of cases of measles year key percentage vaccinated number of cases of measles Which statement matches the data?
12. Disease and immunity  →  12.3. Immunity
12. Disease and immunity  →  12.1. Disease
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30
The seeds of some plants will not normally germinate until they have been in the soil for several months. Some seeds were collected from a plant of this type. Some students wanted to find out whether a chemical in the testa prevented germination. The seeds were divided into three groups. Each group of seeds was put into a shallow dish and covered with water. The lid that was used was loose fitting so that oxygen could reach the seeds. Group 1 were whole seeds. Group 2 were seeds from which the testas had been removed. Group 3 were seeds from which the testas had been removed, but the testas were placed separately in the same dish. group 1 whole seeds water group 2 testas removed water group 3 testas removed but placed in the same dish water Only the seeds in group 2 germinated. What would be the most logical extension of this experiment?
16. Development of organisms and continuity of life  →  16.3. Sexual reproduction in plants
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32
In the umbilical cord, the blood flowing from the fetus to the placenta in the umbilical artery has A a higher concentration of carbon dioxide than the blood in the umbilical vein. B a higher concentration of oxygen than the blood in the umbilical vein. C a lower concentration of urea than the blood in the umbilical vein. D the same concentration of glucose as the blood in the umbilical vein.
16. Development of organisms and continuity of life  →  16.4. Sexual reproduction in humans
11. Transport in humans  →  11.3. Blood vessels
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37
The diagram shows the pyramid of energy for the following food chain: grass  grasshopper  bluebird. A pyramid of energy shows the total quantity of energy stored in the biomass of organisms at each trophic level in the food chain per year. bluebird grasshopper grass 5000 kJ / m2 / yr 24 000 kJ / m2 / yr 110 000 kJ / m2 / yr To one decimal place, what percentage of energy is transferred from the producer to the herbivore?
19. Relationships of organisms with one another and with the environment  →  19.1. Energy flow
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