No questions found
Some lizards detach their tails when threatened by a predator.
Which characteristic is shown?
548
568
598
The diagram shows a key for five vertebrates.
Which class of vertebrates does organism W belong to?
547
503
587
The diagram shows an animal whose scientific name is \textit{Rattus rattus}.
Which genus does it belong to?
507
592
598
The diagram shows a cross-section of part of a leaf.
Which type of cell is found in layer X?
545
578
502
The diagram shows a student's drawing of two guard cells. Which label line is not correct?
536
593
591
How does a liver cell differ from a palisade cell?
600
544
501
The diagram shows structures taken from two different organisms.
Which structures have the main function of transport?
585
547
543
At which level of organisation is a root?
565
568
587
The diagram shows a plant cell.
What is the appearance of this cell after it has been placed in pure water for 30 minutes?
532
561
504
A student cuts out four pieces of carrot root of equal size. The pieces are treated as shown in the diagram, and then left for two hours. After two hours, which piece of carrot will be the smallest?
590
565
522
The diagram shows the effect of an enzyme working in the human digestive system.
What would reduce the rate of production of amino acids?
555
570
564
Which substance catalyses the breakdown of fats to fatty acids and glycerol?
563
515
500
An experiment was done using the apparatus shown in the diagram.
The carbon dioxide content of the water in each tube was measured at the start and again three hours later.
In which tube would there be a decrease in carbon dioxide content?
598
509
568
What is formed first in a leaf as a result of photosynthesis?
570
590
504
A plant with striped leaves similar to the one below was kept in bright light for six hours.
A leaf was taken from the plant and the chlorophyll removed. The leaf was then tested for starch using iodine solution.
Which diagram shows the result of the test?
531
520
554
From which part of a leaf does most water evaporate during transpiration?
513
529
527
In which order does water pass through the cells of a plant, as the water travels from the roots to a leaf?
511
590
533
The diagram shows a vertical section through a human heart.
[Image of the heart diagram]
What are X and Y?
577
543
580
The diagram shows the composition of four samples of air ($O_2$ = oxygen, $CO_2$ = carbon dioxide, $N_2$ = nitrogen).
Which sample is inspired air and which sample is expired air?
598
501
521
The diagram shows apparatus used to investigate anaerobic respiration in yeast.
What happens to the coloured liquid?
571
558
544
The diagram shows some organs in which urea is found.
Which organ makes urea, and which organ removes it from the blood?
[Table_1]
Table:
makes urea | removes urea from blood
A. P | Q
B. Q | Q
C. Q | R
D. R | P
514
524
589
What is a function of the kidneys of a healthy person?
574
568
515
The diagram shows a capillary loop in the skin of a mammal.
What will the capillary loop look like if the mammal becomes cold?
584
582
516
The diagram shows a section through part of the eye.
X is a contracted ciliary muscle. What will happen when it relaxes?
507
553
586
The diagram shows a timeline of a woman's menstrual cycle, which lasts for 28 days.
On which days of the menstrual cycle is a woman most likely to become pregnant?
521
599
542
The diagram shows a vertical section through a flower.
What are X and Y?
507
552
593
The graph shows the height of a child, from birth to the age of 10.
What was the approximate height of the child at 7 years of age?
584
515
526
Four samples of seeds germinated in different conditions of temperature and light, as shown in the table.
[Table_1]
A typical seedling from each sample was removed after seven days. Which seedling was from sample 2?
528
529
523
What will be the genotypes of the offspring resulting from a genetic cross between two individuals, one of which is homozygous dominant, (TT), and the other heterozygous?
516
522
552
Which pathway is taken by energy from the Sun?
563
568
527
The diagram shows a food chain:
If the hawks are removed from this food chain, what is likely to happen to the numbers of the other organisms in this chain?
541
542
508
The diagram shows a food web including a producer, consumers and a decomposer.
Which organism is the decomposer?
535
503
505
Which organisms remove carbon dioxide from the atmosphere?
528
541
534
Which process is not part of the carbon cycle?
548
594
560
The diagram shows a simple water cycle.
What is responsible for water loss from the tree?
502
545
522
The graphs show the number of carnivores in a habitat over a period of time. At time X the herbivores in their food chain are removed from the habitat.
Which graph shows the effect of this on the number of carnivores?
577
577
596
What is a reason for conserving plant species?
510
503
592
What is reduced after deforestation?
507
566
551
The diagram shows four positions on a river where water samples were taken.
Which graph shows oxygen concentrations in the river?
572
535
502
