Biology Exam Questions for SS2 First Term with Answers

You’re welcome to our school exams series where we provide you with termly examination questions in different subjects. In today’s post, we will focus on Biology exam questions. We will cover Biology exam questions for SS2 First term with answers. This means that we’ll be providing you with answers to the questions at the end. Also, you will get a few success tips on how to pass Biology examinations with flying colors. Remember to use the comments sections if you have questions, and don’t forget to join our Free Online Tutorial Classes on YouTube. (Subscribe to the Channel)

Introduction to Biology as a School Subject

Before we venture into Past Biology Exam Questions for SS2 First term, here’s a brief introduction to the subject:

Biology is the branch of science that studies living things and their interactions with the environment. The word Biology comes from two Greek words: “bios” meaning life and “logos” meaning study. It helps us to understand the structure, functions, growth, reproduction, adaptation and evolution of plants, animals, and microorganisms.

As a school subject, Biology introduces students to the basic principles of life and living organisms. It connects with other sciences like Chemistry, Physics and Agriculture, and provides a foundation for careers in Medicine, Pharmacy, Nursing, Agriculture, Biotechnology, and Environmental Science.

Studying Biology also helps students to appreciate the importance of healthy living, food production, conservation of natural resources, and the role of science in solving problems in society.

Biology Exam Questions for SS2 First Term

Biology Exam Questions for SS2 First Term are divided into two sections:

• Section A
• Section B

The first section, namely, Section A is the objective test, and students are expected to attempt all questions in the section. Section B is the theory part, and students are expected to follow specific instruction and answer the required number of questions.

Note that what you have below are SS2 Biology First Term Exam Past Questions made available to assist students in their revision for 1st term examinations and also teachers in structuring standard examinations.

SECTION A: Objectives

Instruction: Answer all questions in this section by choosing from the options lettered A—D. Each question carries equal marks.

1. Autotrophic nutrition is a type of
A. Carnivorous
B. Herbivorous
C. Omnivorous
D. Chemosynthetic

2. Raw materials for photosynthesis are
A. Water only
B. Carbon dioxide only
C. Water and carbon dioxide
D. Sunlight energy

3. In parasitic nutrition, the parasite feeds on
A. Parasite only
B. Host only
C. Symbiont
D. Commensal only

4. Intracellular parasites are found
A. Within the cell
B. Between the cells
C. Outside the cell
D. None of the above

5. Saprophytic organisms feed on
A. Dead plants only
B. Dead animals only
C. Both dead plants and dead animals
D. All of the above

6. In carnivorous plants, the lid functions to
A. Contain the prey
B. Digest the prey
C. Prevent escape of prey
D. Lure the prey

7. There are six classes of food EXCEPT
A. Carbohydrates
B. Roughages
C. Proteins
D. Fats and oils

8. Principal food substances include the following EXCEPT
A. Carbohydrates
B. Mineral salts
C. Proteins
D. Fats and oils

9. Carbohydrates are
A. Energy-giving foods
B. For growth and development
C. For insulation of the body
D. For replacement of worn-out tissues

10. All these are sources of carbohydrates EXCEPT
A. Milk
B. Millet
C. Guinea corn
D. Wheat

11. When carbohydrate is tested with iodine, it changes to
A. White     B. Blue-black
C. Pink        D. Purple

12. Hexose sugars contain
A. 3 carbon atoms
B. 5 carbon atoms
C. 6 carbon atoms
D. 8 carbon atoms

13. A balanced diet contains
A. Five classes of food
B. Six classes of food
C. Eight classes of food
D. None of the above

14. All these are importance of a balanced diet EXCEPT
A. Provides energy
B. Ensures growth and development
C. Maintains a healthy state
D. Exposes the body to diseases

15. Proteins are
A. Energy-giving food
B. Body-building food
C. Form fatty acids
D. Form glycerol

16. The enzyme that breaks down protein is
A. Protease    B. Amylase
C. Lipase        D. Ptyalin

17. The end product of protein digestion is
A. Glucose
B. Amino acids
C. Carboxylic acids
D. Glycerol

18. Protein is tested using
A. Egg white
B. Egg yolk
C. Embryo
D. Egg membrane

19. In Biuret test for protein, the reagent used is
A. Millon’s reagent
B. Fehling’s solutions A and B
C. Biuret reagent
D. Nitric acid

20. Fats and oils contain
A. Carbon only
B. Hydrogen only
C. Carbon, hydrogen and much oxygen
D. Carbon, hydrogen and little oxygen

21. The enzyme that breaks down fats and oils is
A. Protease     B. Amylase
C. Lipase         D. Renin

22. Using Sudan III solution to test for fats and oils gives a
A. Black colour
B. Red-stained layer
C. Translucent appearance
D. All of the above

23. The alimentary canal is composed of all these EXCEPT
A. Mouth          B. Gullet
C. Stomach       D. Liver

24. Which of these is NOT a product of photosynthesis?
A. Carbon dioxide
B. Carbohydrate
C. Water
D. Oxygen

25. Which of these is NOT part of the small intestine?
A. Caecum       B. Duodenum
C. Jejunum       D. Ileum

26. Amylase breaks down starch to
A. Peptones      B. Fatty acids
C. Maltose        D. Glucose

27. Bile contains a high percentage of
A. Proteins
B. Mineral salts
C. Vitamins
D. Water

28. The ileum joins the large intestine at the
A. Caecum         B. Colon
C. Duodenum     D. Rectum

29. Villi are found in the
A. Stomach
B. Large intestine
C. Small intestine
D. Caecum

30. All these are enzymes of the ileum EXCEPT
A. Lactase       B. Maltase
C. Sucrase       D. Amylase

31. Absorption in the villi occurs in the
A. Lacteal
B. Epithelial tissues
C. Arteries
D. Veins

32. Which of these is NOT a function of the large intestine?
A. Absorption of food
B. Storage of waste materials
C. Shaping of faeces
D. Absorption of water content of faeces

33. The liver appears
A. Red
B. Brown
C. Reddish-brown
D. All of the above

34. All these are functions of the large intestine EXCEPT
A. Ingestion of food
B. Egestion of waste materials
C. Storage of waste materials
D. Absorption of water

35. The rectum functions in all the following EXCEPT
A. Storage of faeces
B. Shaping of faeces
C. Absorbing water from faeces
D. Digestion of faeces

36. Remedy for Kwashiorkor is
A. Eating diets containing cassava
B. Eating protein-rich foods
C. Eating more vitamins
D. Eating foods with palm oil

37. Goitre is swelling of the
A. Face          B. Neck
C. Stomach    D. Head

38. Lack of Vitamin C causes
A. Kwashiorkor    B. Beri-beri
C. Scurvy             D. Pellagra

39. The major function of an enzyme is to
A. Break down food
B. Speed up chemical reactions
C. Egest waste materials
D. Inactivate hormones

40. Hydrolytic enzymes work in the presence of
A. Carbon          B. Water
C. Hydrogen      D. Oxygen

41. Which of these is NOT a characteristic of enzymes?
A. They are proteins
B. They are soluble
C. They are temperature-sensitive
D. They modify themselves after reactions

42. Photosynthesis is a process of
A. Catabolism
B. Anabolism
C. Metabolism
D. All of the above

43. Photosynthesis occurs in the
A. Leaves only
B. Stems only
C. Fruits only
D. Green parts of plants

44. Gaseous exchange in photosynthesis occurs through the
A. Xylem vessels
B. Phloem vessels
C. Roots only
D. Stomata

45. Absorption of water in roots is by
A. Osmosis
B. Diffusion
C. Pinocytosis
D. Phagocytosis

46. The light stage of photosynthesis is also called
A. Redox reaction
B. Photolysis of water
C. Carbon assimilation
D. All of the above

47. The basic structural and functional unit of life is the
A. Tissue         B. Cell
C. Organ         D. System

48. The cell wall of plants is mainly made of
A. Glucose       B. Starch
C. Cellulose     D. Protein

49. The organelle responsible for photosynthesis is the
A. Mitochondrion
B. Chloroplast
C. Ribosome
D. Nucleus

50. Which of these is NOT a function of the nucleus?
A. Control of cell activities
B. Transmission of hereditary materials
C. Protein synthesis
D. Energy release

51. The powerhouse of the cell is the
A. Chloroplast
B. Mitochondrion
C. Ribosome
D. Lysosome

52. Which of these is NOT a type of tissue in plants?
A. Xylem           B. Phloem
C. Epithelial      D. Cambium

53. Which of these is NOT an organ in animals?
A. Heart       B. Kidney
C. Root        D. Lungs

54. Which of these is a connective tissue?
A. Muscle      B. Blood
C. Skin           D. Nerve

55. In diffusion, molecules move from
A. Lower to higher concentration
B. Higher to lower concentration
C. Equilibrium to disequilibrium
D. None of the above

56. Osmosis differs from diffusion because it requires a
A. Solute
B. Solvent
C. Semi-permeable membrane
D. Catalyst

57. A group of similar cells performing the same function is a
A. Tissue        B. Organ
C. System       D. Organism

58. Which of the following is an example of an organ system?
A. Circulatory system
B. Blood
C. Stomach
D. Neuron

59. The green pigment in plants is called
A. Xanthophyll
B. Chlorophyll
C. Carotene
D. Haemoglobin

60. The process by which plants lose water vapour through stomata is
A. Respiration
B. Photosynthesis
C. Transpiration
D. Excretion

Remember to use the comments sections if you have questions, and don’t forget to join our Free Online Tutorial Classes on YouTube. (Subscribe to the Channel)

SECTION B: Essay

INSTRUCTION – Answer all three (3) questions in this section.

1. (a) Name five modes of nutrition
(b) State five classes of food
(c) Describe protein
(d) Describe Biuret test for protein
(e) Define digestion

2. (a) Draw a large fully labeled diagram of human digestive system
(b) Draw a large fully labeled diagram of the liver.

3. (a) State ten (10) functions of the liver.
(b) describe the liver

4. (a) State 5 characteristics of enzymes
(b) define Photosynthesis
(c) Describe the light stage of photosynthesis

Answers to Biology Exam Questions for SS2 First Term

Answers to Section A (Objective Test)

The following table gives the correct answers to the objective section of Biology exam questions for SS2 First term. If you are using a mobile device, hold the table and scroll to the right or left for a complete view.

So here you have the answers to the objective section of Biology Exam Questions for SS2 First term. Remember to use the comments sections if you have questions, and don’t forget to join our Free Online Tutorial Classes on YouTube. (Subscribe to the Channel)

Answers to Section B (Theory)

1(a). Five modes of nutrition are:
1. Autotrophic nutrition
2. Heterotrophic nutrition
3. Parasitic nutrition
4. Saprophytic nutrition
5. Holozoic nutrition

1(b). Five classes of food are:
1. Carbohydrates
2. Proteins
3. Fats and oils
4. Vitamins
5. Mineral salts

1(c). Protein: Proteins are complex organic compounds made up of amino acids linked together by peptide bonds. They are essential for growth, repair of worn-out tissues, production of enzymes, hormones, and antibodies.

1(d). Biuret Test for Protein: A solution of the food sample is treated with a few drops of sodium hydroxide and then 1–2 drops of copper (II) sulphate solution. A violet or purple coloration indicates the presence of protein.

1(e). Digestion: Digestion is the process by which large, insoluble food molecules are broken down into smaller, soluble molecules that can be absorbed and utilized by the body.

2(a). Human Digestive System: Draw a large diagram showing: mouth, oesophagus, stomach, liver, pancreas, small intestine, large intestine, rectum and anus. Label each part clearly.

2(b). Liver: Draw a large diagram of the liver showing: right lobe, left lobe, gall bladder, hepatic vein, hepatic artery, bile duct, and portal vein. Label each part clearly.

3(a). Ten functions of the liver:
1. Secretion of bile
2. Storage of glycogen
3. Storage of vitamins and minerals
4. Deamination of excess amino acids
5. Detoxification of harmful substances
6. Regulation of blood sugar level
7. Conversion of glucose to fat and vice versa
8. Production of plasma proteins like fibrinogen
9. Storage of iron from broken down red blood cells
10. Regulation of body metabolism

3(b). Description of the Liver: The liver is the largest gland in the body, reddish-brown in color, and located in the upper right side of the abdomen below the diaphragm. It is divided into right and left lobes and performs vital metabolic, excretory and storage functions.

4(a). Five characteristics of enzymes:
1. They are protein in nature
2. They are catalysts that speed up biochemical reactions
3. They are specific in their action
4. They work best under optimum temperature and pH
5. They are not used up during reactions

4(b). Photosynthesis: Photosynthesis is the process by which green plants manufacture simple sugars (glucose) from carbon dioxide and water using sunlight as the source of energy, in the presence of chlorophyll, and releasing oxygen as by-product.

4(c). The Light Stage of Photosynthesis: In this stage, chlorophyll traps light energy from the sun and uses it to split water molecules into hydrogen and oxygen (photolysis). The oxygen is released into the atmosphere. The hydrogen ions and energy-rich molecules (ATP and NADPH) formed are later used in the dark stage for the synthesis of glucose.

Read Also: Biology Exam Questions for SS2 Third Term

How to Pass Biology Exam Questions for SS2 First Term

Passing your Biology exam questions for SS2 First term requires a combination of preparation, understanding, and strategy. Here are actionable tips to help you excel:

1. Understand the Syllabus: Go through the SS2 first term Biology syllabus and know the topics covered such as nutrition, digestion, enzymes, photosynthesis, respiration and the liver. This will help you focus your study on what is important.

2. Study Your Notes and Textbooks: Read your class notes and recommended textbooks carefully. Pay attention to definitions, diagrams, and explanations. Biology answers are often scored higher when students use correct scientific terms.

3. Practice Drawing and Labeling Diagrams: Many Biology exam questions require drawing. Practice neat, large, and fully labeled diagrams of the human digestive system, liver, enzymes, and plant structures.

4. Revise Past Questions: Go through past SS2 Biology exam questions. This will expose you to likely exam patterns and improve your confidence in answering both objective and essay questions.

5. Memorize Key Terms and Processes: Biology involves processes such as photosynthesis and digestion. Learn the stages, the enzymes involved, and their functions. Always define terms clearly before explaining.

6. Manage Your Time During the Exam: Start with questions you know best, then return to the harder ones. Write answers in clear sentences, number them correctly, and draw diagrams where required.

7. Ask Questions in Class: If you don’t understand a topic, ask your teacher for clarification. Discussions with classmates can also help you understand better.

It’s a wrap!

If you need more clarification on SS2 First Term Questions on Biology, you can use the comments box below. We’ll be there to answer you asap.

Best wishes..