Biology 0610/12 May/June 2020: question paper and mark scheme

Question

The diagram shows what happened in an experiment with plant seedlings. start next day light light Which characteristic of living things made the seedlings grow towards the light? A excretion B nutrition C respiration D sensitivity

Question

A rat has the scientific name Rattus rattus. What do the two parts of this name refer to? A genus and species B kingdom and genus C kingdom and species D variety and genus

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Which list contains only arthropods? A amphibians, insects, myriapods B arachnids, crustaceans, myriapods C crustaceans, insects, fish D insects, myriapods, reptiles

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The diagram shows a plant cell. A biologist wants to find out the number of chromosomes it contains. Which labelled part should be examined more closely? B C A D

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What are leaves examples of? A cells B organs C organ systems D tissues

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Which diagram shows the appearance of a plant cell several minutes after it has been placed in a concentrated solution of sugar? A B C D

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Uncooked pieces of potato of identical size were placed in different liquids for one hour and then measured. Which liquid will cause a decrease in the size of the piece of potato? A pure water B sugar solution less concentrated than the potato cell contents C sugar solution more concentrated than the potato cell contents D sugar solution with the same concentration as the potato cell contents

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Which food-testing solution shows a positive result when it turns from blue to purple? A Benedict’s solution B biuret solution C ethanol D iodine solution

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The diagram shows the four types of human tooth. 1 2 3 4 incisor canine premolar molar Which teeth are used for grinding food? A 1 and 2 B 2 and 3 C 3 and 4 D 4 and 1

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The diagram shows a plant cell. In which part of the cell does photosynthesis occur? A B C D

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Which substance found in a healthy diet helps to prevent constipation? A fat B fibre C minerals D vitamins

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The graph shows the effect of pH on the activity of an enzyme. enzyme activity 1 3 5 7 9 11 pH In which part of the alimentary canal would this enzyme be most active? A large intestine B mouth C small intestine D stomach

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After passing through the root hair cells of a plant, what is the next tissue through which water passes? A cortex B epidermis C mesophyll D xylem

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From which part of a leaf does most water evaporate during transpiration? A the cuticle B the guard cells C the spongy mesophyll cells D the xylem vessels

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Which blood vessel carries blood to the muscle of the heart? A coronary artery B pulmonary artery C renal vein D vena cava

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The diagram shows the human heart and main blood vessels. lungs X rest of body What is the blood vessel labelled X? A aorta B pulmonary artery C pulmonary vein D vena cava

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What is a chemical barrier to pathogens? A nose hairs B skin C stomach acid D white blood cells

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What is the site of gas exchange in humans? A nose B alveoli C bronchus D trachea

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The substances listed are associated with aerobic respiration. 1 carbon dioxide 2 glucose 3 oxygen 4 water Which substances are the products of aerobic respiration? A 1 and 3 B 1 and 4 C 2 and 3 D 3 and 4

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The diagram shows the breathing system. 1 2 3 What are the labelled structures? 1 2 3 A bronchus bronchiole trachea B bronchiole bronchus trachea C trachea bronchus bronchiole D trachea diaphragm bronchus

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The diagram shows the human excretory system. Which labelled structure is the ureter? A B C D

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Which structure transfers information to the central nervous system? A effector B motor neurone C relay neurone D sensory neurone

Question

Examples of responses to hormones are listed. 1 increased breathing rate 2 increased pulse rate 3 growth of body hair 4 widened pupils Which responses are caused by the hormone adrenaline? A 1, 2, 3 and 4 B 1, 2 and 4 only C 2, 3 and 4 only D 3 and 4 only

Question

Which part of the eye focuses light? A cornea B iris C lens D retina

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The diagram shows a plant shoot growing towards the light. light Which response is shown by the shoot of the plant? A gravitropism B photosynthesis C phototropism D reflex

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Which statement about antibiotic use in humans is correct? A Different types of antibiotic are used to remove antibodies from the body. B Antibiotics are injected in childhood to prevent diseases in adults. C Antibiotics are used to treat diseases caused by viruses. D Different types of antibiotic are used because bacteria can become resistant.

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Which conditions are always required for the germination of seeds? condition suitable light oxygen water temperature A key B = required C = not required D

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Where do fertilisation and pollination occur in a flower? fertilisation pollination A carpel ovule B ovary stigma C stigma anther D style carpel

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When do the following stages occur in a typical human menstrual cycle? bleeding ovulation A days 13 – 14 days 6 – 25 B days 1 – 4 days 27 – 28 C days 6 – 25 days 1 – 4 D days 1 – 4 days 13 – 14

Question

The graph shows the number of pregnancies in 4 groups of 100 women. Each group used a different method of contraception. 20 number of 10 pregnancies 0 contraceptive intra-uterine diaphragm monitoring body pill device (IUD) temperature The method of contraception which is the most effective is A barrier. B chemical. C natural. D surgical.

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The photograph shows a tiger. Which visible adaptive feature makes the tiger a good predator? A large teeth B long whiskers C small ears D thick fur

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Which statement about the human sex chromosomes is correct? A Females have an X chromosome and a Y chromosome. B Females have two Y chromosomes. C Males and females have at least one X chromosome. D Males and females have at least one Y chromosome.

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The diagram shows the inheritance of height in pea plants. tall parent plant dwarf parent plant TT tt tall offspring plant tall offspring plant Tt Tt Which plants have a heterozygous genotype? A both parent plants B dwarf parent plant only C both offspring plants D tall parent plant only

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The graph shows the masses of two different types of tomato. type 1 type 2 number of tomatoes 0 20 40 60 80 100 120 140 160 180 200 220 240 mass / g What can be concluded from the graph? A Genes do not affect the mass of tomatoes. B Type 1 tomatoes show continuous variation. C Type 2 tomatoes are sometimes smaller than type 1 tomatoes. D Type 2 tomatoes show discontinuous variation.

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Which is an example of a population? A all the animals and plants living in a lake B all the different herbivores in a forest C all the mahogany trees growing in a forest D all the species of animals in Africa

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The diagram shows a food chain in a rock pool. seaweed → whelks → crabs → seagulls What will happen if the number of secondary consumers increases? There will be A fewer crabs. B fewer seagulls. C fewer whelks. D less seaweed.

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What is the role of anaerobic respiration in bread-making? A to produce alcohol to flavour the bread B to produce gas to make the bread rise C to release enough energy to bake the bread D to release enough lactic acid to kill the yeast

Question

A crop plant has been genetically modified to make it resistant to herbicides. Which is a possible disadvantage of introducing this new crop plant? A Loss of weeds reduces competition. B Some weeds might become resistant to the herbicide. C The crop plant is unharmed and produces a higher yield. D The new gene will appear in new generations of the crop.

Question

The diagram shows the results of a survey on the types of animals found along a stretch of river near to a factory. direction of water flow mayfly nymph stonefly nymph factory emptying pollutants into the water rat-tailed maggot bloodworm sludge worm leech bloodworm water louse snail shrimp caddisfly larva mayfly nymph stonefly nymph Which animal lives in the least polluted water? A bloodworm B caddisfly larva C leech D stonefly nymph

Question

The graph shows four areas of forest that were cut down and then replanted with trees in one part of the world between 1995 and 2015. Which area of forest was used most sustainably? area of key forest replanted trees trees cut down A B C D