Campus Link Academy

*80 Hot Key Points to blast Biology*

1. The retina is the part of the eye that is sensitive to light.

2. Pollination is the transfer of pollen grains from the anther to the stigma of a flower.

3. The number of offspring produced from a mitotic division is Two.

4. Large vacuoles are absent in animal cells but present in plant cells along with Chloroplast and cellulose cell wall while Chromosomes occur in both.

5. The energy released during cellular respiration is stored in the form of Adenosine Triphosphate (ATP)

6. At the end of mitosis, the number of cells produced is four.

7. During inspiration, the diaphragm contracts and flattens out simultaneously as the rib muscles contract, causing the ribs to be raised.

8. Each kidney is connected with the bladder by a Ureter.

9. The structural similarities in Paramecium and Euglena are in the presence of anterior and posterior ends.

10. The oxygen given off during photosynthesis is gotten from Water.

11. The long necks and legs of the present-day giraffes were some of the basis of Lamarck’s Theory of Evolution.

12. The pancreas secretes insulin a hormone that controls excess sugar in the blood.

13. Anemometer is used for measuring wind speed.

14. The mitochondrion is the site for the production of ATP.

15. Dry weight is the mass of the weight of an organism after all the water has been removed. It is the most accurate measurement of organic masses and weight.

16. Amoeba moves with pseudopodia otherwise known as “false feet”.

17. Soil permeability refers to how easily water passes through the soil.

18. The processes involved in the water cycle are Evaporation, Condensation and Precipitation.

19. Sahel savanna is in the drier regions to the north of the Sudan savanna, in the northeastern part of Nigeria.

20. The earthworm possesses a hydrostatic skeleton.

21. The factors that produce character in living organisms are Genes. Genes are character producing in an organism.

22. Phytoplankton has the highest biomass in a food chain

23. The hierarchy of organic evolution in a plant: Schizophyta, thalophyta, bryophyta, Pteridophyta and Spermatophyta.

24. Gestation is a period of time in which a zygote develops to the time of birth.

25. Binary fission is a mode of production which is common to both paramecium and amoeba.

26. The pancreas secretes hormone which controls excess sugar in the blood.

27. Plasmodium needs supporting cellular machinery to survive as it is not a free-living organism.

28. In a food chain on land, green plant is the producer.

29. Neurons that receive stimuli from receptors are called sensory neurones.

30. The cerebrum controls voluntary movement and interpretation.

31. When a person moves from a dark room into a bright light, the pupils become smaller

32. Water makes up about 77.5% of the living protoplasm in various living things.

33. Wildlife conservation is enhanced by discouraging elimination of endangered species.

34. In humans, s*x is determined by the difference in the nature of X and Y chromosomes in the male.

35. The structure of the ear which is responsible for balancing is the semicircular canals.

36. Chorion is the outer layer that surrounds both the embryo and the yolk sack.

37. Which of these is not a type of fingerprint?

38. The opening and closing of the stomata is by Osmosis

39. Hermaphrodite has both male and female reproductive organs.

40. Flooding and earthquakes are part of abiotic factors that control the human population.

41. Clay soil has the highest water-retaining capacity.

42. An organism that has been extensively used to test the chromosome theory of heredity is Drosophila Melanogaster.

43. The mitochondria is the reservoir for energy in the cell.

44. Inbreeding involves the crossing of individuals of the same species, especially over many generations.

45. The phloem tissues transport manufactured food from the leaves mainly to other parts of the plant either for use or for storage.

46. Fossil records require the use of carbon dating to prove that evolution has occurred.

47. Melanin is the pigment that gives skin, hair, and eyes their color. Melanin is produced by cells called melanocytes.

48. The tissue is a group of cells that are similarly arranged together to perform a specific function.

49. The presence of a four-chambered heart is a characteristic feature of mammals.

50. Morphological variation refers to the noticeable physical appearance of individuals to the same species.

51. Possession of four limbs, countershading of coat colour and development of long tails are
adaptive features for arboreal life .

52. Nitrobacter converts nitrites (from ammonia) to nitrates. Azobacter is a nitrifying bacteria .

53. The number of offspring produced from a mitotic division is Two .

54. Large vacuoles are absent in animal cells but present in plant cell along with Chloroplast and cellulose cell wall while Chromosomes occur in both.

55. The energy released during cellular respiration is stored in the form of Adenosine Triphosphate (ATP)

56. At the end of mitosis , the number of cells produced is four.

57. During inspiration, the diaphragm contracts and flattens out simultaneously as the rib muscles contract, causing the ribs to be raised.

58. Each kidney is connected with the bladder by a Ureter.

59. The structural similarities in Paramecium and Euglena are in the presence of anterior and posterior ends.

60. The oxygen given off during photosynthesis is gotten from Water.

61. The long necks and legs of the present day giraffes were some of the basis of Lamarck’s Theory of Evolution.

62. The pancreas secretes insulin a hormone which controls excess sugar in the blood.

63. Anemometer is used for measuring wind speed.

64. Mitochondrion is the site for the production of ATP.

65. Dry weight is the mass of the weight of an organism after all the water has been removed. It is the most accurate measurement of organic masses and weight.

66. Amoeba moves with pseudopodia otherwise known as “false feet”.

67. Soil permeability refers to how easily water passes through the soil.

68. The processes involved in water cycle are Evaporation, Condensation and Precipitation.

69. Sahel savanna is in the drier regions to the north of the Sudan savanna, in the north eastern part of Nigeria.

70. The earthworm possesses a hydrostatic skeleton.

71. The factors that produce character in living organisms are Genes. Genes are character producing in an organism.

72. Phytoplankton has the highest biomass in a food chain

73. The hierarchy of organic evolution in plant: Schizophyta, thalophyta, bryophyta, Pteridophyta and Spermatophyta.

74. Gestation is period of time which a zygote develop to the time of birth.

75. Binary fission is a mode of production which is common to both paramecium and amoeba.

76. The pancreas secretes hormone which controls excess sugar in the blood.

77. Plasmodium needs supporting cellular machinery to survive as it is not a free-living organism.

78. In a food chain on land, green plant is the producer.

79. Neurons that receive stimuli from receptors are called sensory neurones.

80. The cerebrum controls voluntary movement and interpretation.

. Venus is the only planet that rotates in opposite direction to others
52. The atmosphere is composed of 78% Nitrogen, 21% Oxygen and 1% other gases including Co2, water vapour, the noble gases, dust and air pollutants.

Part 2: 25 Jamb Chemistry Key Points

The lithosphere is composed of rocks and soil

The industrial preparation of HNO3 is carried out using Ostwalds’s process

Heavy chemicals are those chemicals used in large quantities in Industries.

The most used chemical in industries is H2SO4.

NaOH is used for making soap

Fine chemicals are not produced in large quantities. However, they are produced with a high degree of accuracy, e.g AgBr. Fine chemicals include drugs.

Thermite process is used for Welding broken ends of metal parts.

Bessemer process is used for the production of steel

Acheson process is used to produce Graphite

Nigerian Crude oil is called sweet because of its low sulphur content.

Alkanals can be oxidized but Alkanones cannot, why? It is because Alkanals have an oxidizable hydrogen atom attached to the carbonyl carbon but Alkanones do not.

Newspaper appear yellow after prolonged exposure to the Atmosphere because the bleaching action of SO2 from which they were made is reversed by atmospheric oxidation.

Atoms with the same mass number but different atomic numbers are referred to as Isobars

Amines have a characteristic fishy smell

Aromatic compounds are those with one or more benzene rings.

Aliphatic compounds are those with open chains as well as cyclic compounds that do not have benzene ring in their structure.

Hydrocarbons are compounds that contain carbon and hydrogen only.

Water is not added to acid because it could cause an explosion. Addition of water to acid is violently exothermic.

Bunsen Burner is used for heating and for exposing items to flame

Methane is called fire damp because it is the main cause of explosion in poorly ventilated coal mines.

There are basically two types of radioactivity viz natural and artificial radioactivity

Oxygen is the most abundant element in the earth crust.

Nigerian crude oil is called light because it has a low density due to its composition of low molecular weight hydrocarbons.

An Oxide that dissolves in water to form acid is called Acid Anhydride

Metal is an element that ionizes by the loss of (electrons)