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The diagram shows a plant that has been placed near a sunlit window for a few weeks.
Which two characteristics of living organisms have affected the shape of the plant?
564
525
574
What is a characteristic of amphibians but not of reptiles?
598
526
574
The diagram shows an insect.
Use the key to identify the insect.
1 wings present ........................................ go to 2
wings absent ......................................... A
2 two pairs of wings .................................. go to 3
one pair of wings .................................. B
3 wings with circular markings ................ C
wings without circular markings ............. D
567
558
529
The diagram shows a spongy mesophyll cell from a green leaf.
Which labelled structures are not found in animal cells?
561
591
580
What are the features of the cell walls in a xylem vessel? [Table_1]
559
591
591
The diagram shows a plant cell which has lost water to its surroundings by osmosis. Which part is the partially permeable membrane?
566
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521
Which identifies the chemical elements found in proteins? [Table_1]
543
561
530
What controls the speed of chemical reactions in all living cells?
548
599
558
Where are carbohydrates made in a green leaf?
532
528
527
How does carbon dioxide pass through the stomata of a leaf?
531
504
526
The roots of plants take up nitrates from the soil. What are the nitrates used to make?
511
525
587
A child decided to eat only meat, oily fish, cheese and bread, and drink only water. Which nutrient would be in low levels in this diet?
517
596
555
The diagram shows the human alimentary canal. Which labelled part absorbs the most water?
527
502
598
Which substances are produced by the action of amylase on starch?
588
510
509
The diagram shows the stem of a plant. A strip of the outer tissue including the phloem has been removed.
How is transport in the plant affected?
577
554
500
The diagrams show stages in the passage of water through a plant.
Which arrow shows water moving in the form of water vapour?
541
575
591
Which graph shows the effect of increasing humidity on the rate of transpiration?
587
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552
The diagram shows a garden pond with a fountain worked by a pump. The fountain brings oxygen from the air to fish in the pond.
The system can be compared with part of the human circulatory system. The pump is compared with the heart.
What are P and Q compared with?
534
587
514
The diagram shows sections through three types of blood vessel, not drawn to the same scale.
Which section is from a vein and which is from a capillary?
512
523
596
The diagram shows human blood cells, as seen under a microscope. What is the function of cell X?
573
507
517
What is the approximate composition of the air breathed out by a person?
[Table_1]
502
579
578
Which substances are produced by respiration in humans?
[Table_1]
568
582
589
The apparatus shown is set up and left for one hour.
A gas is released by the mixture. It caused the indicator solution to go cloudy.
What is the indicator solution?
505
521
520
A person is regularly connected to a machine that removes wastes, and excess salts and water, from their blood.
Which organ’s function does the machine carry out?
576
501
572
The diagram shows the human nervous system.
Which two structures form the central nervous system?
558
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593
The flow diagram shows the pathway that causes pupil diameter to decrease in response to bright light.
What does X represent?
559
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569
The diagram shows seedlings in two experiments on the tropic response of seedlings to gravity and light.
Experiment 1
to show the effect of gravity
start of experiment in the dark -> 3 days later
Experiment 2
to show the effect of light
start of experiment -> 3 days later (light from one side)
How have the seedlings responded?
551
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514
The diagram shows part of the reproductive system of a human female.
In which labelled region would implantation of a zygote normally take place?
593
556
523
The diagrams show four methods of birth control.
Which one is placed in the uterus?
508
504
548
Which row describes the cells produced in meiosis, and a function of this type of nuclear division? [Table_1]
592
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522
A brown mouse mates with a white mouse. There are 8 brown mice and 9 white mice in the offspring.
The same two mice mate again. There are 9 brown mice and 7 white mice in the offspring.
What are the genotypes of the parents most likely to be?
548
593
557
What is the principal source of energy input into a food chain?
587
549
591
The diagram shows a food web. Which arrow does not show the direction of energy flow?
559
565
509
The diagram shows part of the carbon cycle.
What is the process labelled Z?
512
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555
The graph shows the population of mosquito larvae in a pond. On day 3, fish that eat mosquito larvae are released into the pond.
What is the most likely reason for the decline in the population of larvae after day 3?
533
503
552
Why is yeast used in bread-making?
537
565
563
Which agricultural activity does not result in pollution of nearby rivers?
524
570
520
The diagram shows the results of a survey on the types of animals found along a stretch of river near to a factory. Which of the following animals lives in the most polluted water?
567
574
564
