Biology 0610/13 October/November 2025: question paper and mark scheme

Question

The sundew is a carnivorous plant that can trap small insects with sticky hair-like structures on its leaves. When an insect gets stuck, other nearby sticky hair-like structures bend over to trap the insect. Which characteristics of living organisms are demonstrated when the sundew plant traps insects? A growth and excretion B growth and sensitivity C movement and excretion D movement and sensitivity

Question

An arthropod has three pairs of legs. To which group of arthropods does this organism belong? A arachnids B crustaceans C insects D myriapods

Question

Using the dichotomous key, which type of animal would be found at Z? vertebrate yes does it have fur? no yes does it have feathers? no bird yes does it have dry skin? no yes does it have scales? no Z A amphibian B fish C mammal D reptile

Question

Which statement describes a plasmid? A It is a circular piece of DNA. B It is the liquid part of human blood. C It is the site of aerobic respiration. D It is the site of protein synthesis.

Question

Which diagram represents a typical plant cell? A B C D

Question

A student drew a diagram of an alveolus. The diameter of the alveolus in the diagram was 90 mm. The magnification of the diagram was ×225. What is the actual size of the alveolus? A 4.00 mm B 2.50 mm C 0.40 mm D 0.25 mm

Question

Which factor would decrease the rate of diffusion? A increased temperature B increased area of diffusion surface C increased concentration gradient D increased diffusion distance

Question

What is the best piece of laboratory equipment to use to represent the cell membrane in an osmosis investigation? A dialysis tubing B filter paper C measuring cylinder D test-tube

Question

Which process moves oxygen from the soil into a root hair cell? A diffusion B osmosis C respiration D ventilation

Question

A food containing protein and vitamin C was tested. Which row shows the results of these tests? result with result with biuret test DCPIP test A purple colourless B purple blue C blue colourless D blue blue

Question

Which word describes the role of amylase in a chemical reaction? A catalyst B product C solvent D substrate

Question

How does a plant use the sugar that it makes? used for used for used to make stored as starch photosynthesis respiration cellulose A yes yes yes no B yes yes no yes C yes no yes yes D no yes yes yes

Question

The diagram shows part of the human digestive system. Where is food physically digested in the presence of an acidic pH? A D B C

Question

Which type of cell surrounds stomata? A ciliated B egg C guard D mesophyll

Question

The diagram shows a cross-section of a human heart. Which labelled part is the left atrium? B C A D

Question

What is an example of the transmission of a disease by direct contact? A breathing in a pathogen carried in the air B eating infected food C exchanging of body fluids D touching a contaminated surface

Question

Which row describes the composition of expired air compared to the composition of inspired air? oxygen carbon dioxide concentration concentration A higher higher B higher lower C lower higher D lower lower

Question

Which row shows the substances used and produced in aerobic respiration? carbon dioxide glucose oxygen water A produced produced used used B used produced produced used C produced used used produced D used used produced produced

Question

The diagram shows some of the organs in the human body. Which organ contains alveoli? A D C B

Question

The diagram shows a reflex arc. Which part is found only in the central nervous system (CNS)? C B A D

Question

Which structure in the eye changes the direction of the light as it enters the eye? A cornea B iris C pupil D retina

Question

Which substance is secreted by an endocrine gland? A glucose B insulin C lactic acid D starch

Question

The diagrams show shoots of maize seedlings. Which shoot is showing a gravitropic response in which it grows away from the stimulus? A B C D light light gravity gravity

Question

Which statement describes the effect of antibiotics? A Antibiotics kill all harmful microorganisms. B Antibiotics kill bacteria and viruses only. C Antibiotics kill bacteria only. D Antibiotics kill viruses only.

Question

The diagram shows part of a potato plant. The tubers grow into new potato plants that are genetically identical to the parent plant. tuber forming new tuber Which process is shown? A asexual reproduction B fertilisation C pollination D sexual reproduction

Question

The photograph shows a flower. P What is the part labelled P? A a stigma B a style C an anther D an ovary

Question

In which conditions will seeds germinate? oxygen water A absent absent B present absent C absent present D present present

Question

Which part of the male reproductive system produces seminal fluid? A penis B prostate gland C scrotum D testes

Question

In humans, what is an example of a secondary sexual characteristic in both males and females? A Fat is deposited on the hips and thighs. B Hair grows on the face. C Sexual organs grow. D The hips widen.

Question

The table shows the number of new human immunodeficiency virus (HIV) infections per 1000 people, in one country, in 1990 and in 2022. number of new year HIV infections per 1000 people 1990 2.57 2022 0.22 Which statement could explain the change in the number of new HIV infections between 1990 and 2022? A an increase in illegal drug use B an increase in reusing needles for injections C an increase in screening of blood that is used for transfusions D an increase in unprotected sexual contact

Question

Which statement describes an allele? A a sequence of amino acids B an alternative form of a gene C an observable feature D the genotype of an organism

Question

In a species of plant, the allele for red flowers, R, is dominant to the allele for white flowers, r. Two plants with red flowers were crossed. parents: plant with red flowers × plant with red flowers offspring: 93 plants with red flowers and 28 plants with white flowers What are the genotypes of the parents? A RR and rr B RR and Rr C Rr and Rr D Rr and rr

Question

Black truffle is a fungus that obtains nutrients from the roots of hazel trees. Deer find and eat the fungi. What is the source of energy for this food chain? A deer B hazel trees C soil D the Sun

Question

The diagram shows a simple food chain. 1 2 3 green plants chickens foxes Which process releases the energy that is lost at 1, 2 and 3? A ingestion B photosynthesis C respiration D transpiration

Question

The graph shows the growth of the world human population. world human population time Which phases of population growth are shown in the graph? A death and lag B death and stationary C exponential and lag D exponential and stationary

Question

Weeds are growing in a crop. What could be used to kill the weeds? A artificial fertiliser B herbicide C insecticide D magnesium ions

Question

Which substance is a source of water pollution that contains pathogens? A antibiotic B chlorophyll C methane D untreated sewage

Question

The diagram shows an ecological pyramid. 1 2 3 4 producer Which levels in the diagram contain carnivores? A 1, 2 and 3 B 1 and 2 only C 1 only D 3 only

Question

In ideal conditions, one species of bacterium can grow and divide every 15 minutes. If one bacterium starts to grow and divide, what would be the increase in the number of bacteria after 90 minutes? A 16 B 32 C 63 D 127

Question

What is a disadvantage of intensive farming? A less cost to produce the same yield B fewer habitats in the same area C fewer people required to produce the same yield D less land required to produce the same yield