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

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)
       
    2. If fish in diagram A is the drawing of object B, calculate the drawing magnification. (3 mks)
       

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