In support and movement, turgor pressure is:

the outward push of cell contents against the wall that holds a soft plant upright

the thin-walled packing tissue whose turgid cells keep a herbaceous stem firm

the plant tissue of living cells thickened at their corners, supporting a young stem

the support an earthworm gains from fluid held under pressure in its body cavity

In a cell, the middle lamella is best described as:

the layer of calcium pectate cementing two neighbouring plant cell walls together

the dense body within the nucleus at which ribosomes are assembled

the thread-like material of DNA and protein that condenses into chromosomes

the small circular piece of DNA carried by a bacterium apart from its main chromosome

In respiration, glycolysis is:

the breakdown of glucose to pyruvate in the cytoplasm, which requires no oxygen

the stage on the inner mitochondrial membrane at which most ATP is made and oxygen is the final acceptor

the anaerobic pathway in yeast that yields ethanol and carbon dioxide

the reactions in the mitochondrial matrix that release carbon dioxide from pyruvate

In the study of variation, the sickle cell trait is:

the heterozygous condition HbAS, which gives some protection against malaria

a feature developed during an organism's own life, such as a scar, which is not inherited

the inherited condition in which an organism cannot make the pigment melanin

a sudden change in the genetic material, which is a source of entirely new variation

In ecology, a biome is:

a large geographical region with its characteristic climate, vegetation and animal life

all the organisms of one species living in a given area at a given time

the particular place in which an organism lives

the largest population an area can support without exhausting its resources

Joint Admissions and Matriculation Board

JAMB UTME · Biology

40 of 302 exam-style questions, written to the Joint Admissions and Matriculation Board format and free to read. The answers are here too — what they do not tell you is how many you would get right with a clock running.

Sit this paper timed All JAMB UTME papers

1. Which organism shows this adaptation: broad padded feet and a hump of stored fat, for crossing hot sandy desert?

1. Which organism shows this adaptation: broad padded feet and a hump of stored fat, for crossing hot sandy desert?

2. In support and movement, turgor pressure is:

3. Which group is the division of simple plants whose body is not divided into root, stem and leaf?

4. In a cell, the middle lamella is best described as:

5. In photosynthesis, which is the fluid filling a chloroplast, in which carbon dioxide is fixed?

6. In respiration, glycolysis is:

7. Which term describes the transfer of pollen to a stigma on a different plant of the same species?

8. Which ecological relationship is an association in which one partner feeds on the other and harms it?

9. Which of these is the anaerobic pathway in a hard-worked muscle that yields lactic acid?

10. Which ecological relationship is an association in which one partner benefits while the other is neither helped nor harmed?

11. Which part of the nervous system is the junction at which an impulse passes from one neurone to the next by a chemical?

12. Which provides support in the way described: the outward push of cell contents against the wall that holds a soft plant upright?

13. Which process is the spreading of particles from a region of higher to one of lower concentration?

14. Which group is the division of vascular plants that reproduce by means of seeds?

15. In ecology, which term means all the organisms of one species living in a given area at a given time?

16. In the study of variation, the sickle cell trait is:

17. In ecology, a biome is:

18. In ecology, which term means the network formed where several food chains in one community interconnect?

19. Which term describes germination in which the cotyledons are carried above the soil?

20. The region of a root where cell division is most active is the

21. Which organism shows this adaptation: stomata carried on the upper surface of a leaf that floats?

22. In photosynthesis, the light stage is:

23. In ecology, which term means the role an organism plays in its community, including what it eats and when it is active?

24. Which of these is an adaptation shown by the mangrove tree?

25. In the study of variation, discontinuous variation is:

26. Which part of the nervous system is the nerve cell carrying an impulse from a receptor to the central nervous system?

27. Which structure is present in a plant cell but absent in an animal cell?

28. The organelle responsible for the release of energy in a cell is the

29. In a food chain, green plants are referred to as

30. In classification, Protista is:

31. Which mode of nutrition is feeding by taking in solid organic food and digesting it inside the body?

32. Meiosis differs from mitosis in that meiosis

33. Which process is the movement of manufactured food from the leaves to other parts through the phloem?

34. Which excretory structure is the excretory structure of an insect, which passes uric acid into the gut?

35. Autotrophic nutrition is:

36. In the nervous system, the hypothalamus is:

37. A man of blood genotype AS marries a woman of genotype AS. The probability that a child will have sickle cell disease is

38. Which mode of nutrition is building food using the energy released by oxidising chemical substances rather than light?

39. Which term describes the early period of a growth curve during which little increase in size is recorded?

40. Which process is the movement of a substance against its concentration gradient, using energy from respiration?

Reading these is not the same as sitting them.