Biology Questions and Answers - Form 1 Term 2 Opener Exams 2022

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QUESTIONS

  1. With reference to the term Biology, state the meaning of the following:- (2 mks)
    1. bios –
    2. logos –
  2. State the two major branches of Biology and give their meaning. (4 mks)
  3. Complete the table below by giving the meaning of the terms: (5 mks)
    Branch of Biology Meaning
    Microbiology  
    Anatomy  
    Physiology  
    Entomology  
    Cytology  
  4. Outline four benefits of study of biology. (4 mks)
  5. With reference to characteristics of living organisms complete the table below. (8 mks)
    Characteristic Definition/Meaning
    Reproduction  
    Movement  
    Excretion  
    Nutrition  
    Respiration  
    Growth and development  
    Gaseous exchanges  
    Irritability (Responsiveness)  
  6. State the importance of the following in living organisms. (6 mks)
    1. Reproduction –
    2. Movement –
    3. Excretion –
  7. Explain how plants and animals differ with reference to the following characteristics. (10 mks)
    NB: Marks are linked in each characteristic.
    Nutrition  Plants Animals
    Irritability    
    Growth    
    Excretion    
    Movement     
  8. Explain how the following apparatus are used in collection and observation of specimens. (6 mks)
    1. A pooter –
    2. A bait trap –
    3. A pit fall trap –
    4. A fish net –
    5. A sweep net –
    6. Pair of forceps –
  9.        
    1. Define the following terms: (2 mks)
      1. Taxonomy –
      2. Taxonomic units –
      3. Outline the seven taxonomic units of classification from the largest to the smallest. (7 mks)
    2. Complete the table below kingdoms should be in the order of simplest to most complex organisms. (10 mks)
      Kingdom Example of organism
         
  10.      
    1. Identify the organisms shown in the photographs. (3 mks)
      1
    2. If fish in diagram A is the drawing of object B, calculate the drawing magnification. (3 mks)
      2

MARKING SCHEME

  1. With reference to the term Biology, state the meaning of the following:- (2 mks)
    1. bios – life
    2. logos – knowledge
  2. State the two major branches of Biology and give their meaning. (4 mks)
    1. Botany - Branch of biology that deals with study of plants.
    2. Zoology - Branch of biology which deals with study of animals.
  3. Complete the table below by giving the meaning of the terms: (5 mks)
    Branch of Biology Meaning
    Microbiology Study of microscopic organisms
    Anatomy Study of structure of living organisms
    Physiology Study of body functions
    Entomology Study of insects
    Cytology Study of cells
  4. Outline four benefits of study of biology. (4 mks)
    1. Solving environmental problems
    2. Career subject
    3. Acquire scientific skills
    4. Promotes cooperation in solving common problems (pertinent and emerging problems)
  5. With reference to characteristics of living organisms complete the table below. (8 mks)
    Characteristic Definition/Meaning
    Reproduction Process by which living things give use to new individuals of their own.
    Movement Change in position of whole or part of an organism
    Excretion Removal of metabolic wastes from body of an organism.
    Nutrition Process by which living organisms acquire & utilize nutrients
    Respiration Chemical breakdown of food to release energy
    Growth and development

    Growth-Permanent increase in size of an organism
    Development-Permanent increase in complexity of an organism 
    Gaseous exchanges Process of movement of respiratory gases across a respiratory surface.
    Irritability (Responsiveness) Ability of organism to detect and respond to change in environment
  6. State the importance of the following in living organisms. (6 mks)
    1. Reproduction – Increase in population, Sustains species
    2. Movement – Get resource from environment, Escape harmful stimuli, Reach out mates for reproduction
    3. Excretion – Prevents accumulation of metabolic waste to toxic level which would, harm the organism.
  7. Explain how plants and animals differ with reference to the following characteristics. (10 mks)
    NB: Marks are linked in each characteristic.
    Nutrition  Plants Animals
    Nutrition Are antotrophic
    Manufacture their food for water & CO2
    Are heterotrophic.
    Feed on complex food materials from plants and animals
    Irritability Show response
    No specific receptors 
    Rapid response to stimulus
    Have specific reception
    Growth Growth takes place at meristemetic tissue only Growth occurs all over the body uniformly.
    Excretion Lack specialized excretory organs Have highly developed excretory organs.
    Movement  Occurs only in parts Both locomotory and parts movement.
  8. Explain how the following apparatus are used in collection and observation of specimens. (6 mks)
    1. A pooter – Sucking small animals from surfaces.
    2. A bait trap – Attract and trap small animals eg rats.
    3. A pit fall trap – Catching crawling animals.
    4. A fish net – Trapping small water animals eg fish.
    5. A sweep net – Catching flying insects.
    6. Pair of forceps – Picking up small crawling animals.
  9.      
    1.      
      1. Define the following terms: (2 mks)
        • Taxonomy – Science of classification
        • Taxonomic units – Group into which organisms are placed in classification.
      2. Outline the seven taxonomic units of classification from the largest to the smallest. (7 mks)
        1. Kingdom
        2. Phylum
        3. Class
        4. Order
        5. Family
        6. Genus
        7. Species
    2. Complete the table below kingdoms should be in the order of simplest to most complex organisms. (10 mks)
      Kingdom Example of organism
      Monera Bacteria
      Protoctista Algae, amoeba, paramecium
      Fungi Moulds, yeast, mushrooms, puffballs etc
      Plantae Maize, beans
      Animalia Man, bees, lion
  10.        
    1. Identify the organisms shown in the photographs. (3 mks)
      1. Clamydomonas
      2. Hydra
      3. Paramecium
    2. If fish in diagram A is the drawing of object B, calculate the drawing magnification. (2 mks)
      Magnification = length of image = 86cm = X2
                               length of object    43cm

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