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SS1: BIOLOGY - 1ST TERM

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  1. Introduction to Biology | Week 1
    7 Topics
    |
    2 Quizzes
  2. Recognizing Living Things | Week 2
    3 Topics
    |
    1 Quiz
  3. Organisation of Life | Week 3
    3 Topics
    |
    2 Quizzes
  4. Classification of Living Organisms | Week 4
    6 Topics
    |
    2 Quizzes
  5. Kingdom Prokaryotae / Monera & Kingdom Protista | Week 5
    4 Topics
    |
    3 Quizzes
  6. Kingdom Fungi & Kingdom Plantae | Week 6
    10 Topics
    |
    2 Quizzes
  7. Kingdom Animalia I | Week 7
    7 Topics
    |
    1 Quiz
  8. Kingdom Animalia II | Week 8
    6 Topics
    |
    2 Quizzes
  9. The Cell | Week 9
    4 Topics
    |
    1 Quiz
  10. The Cell Structure and Functions | Week 10
    5 Topics
    |
    1 Quiz
  11. The Cell and its Environment | Week 11
    5 Topics
    |
    1 Quiz
  12. Nutrition in Plants | Week 12
    5 Topics
    |
    1 Quiz

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Topic Content:

  • Theory Questions – Classification of Living Organisms

Classification of Living Organisms – Theory Questions:

1. (a) What is the classification of Living things?

(b) Name the scientist who developed the Binomial system of classification.

(c) State the reasons why it is necessary to classify living things.

2. (a) Define the term taxonomy.

(b) List seven major groups into which taxonomists classify living things in order of hierarchy

(c) State the five kingdoms developed by Whittaker.

(d) Give reasons why viruses do not fit into any of the five kingdoms.

(e) State two features each which viruses have in common with:

(i) living things
(ii) non-living things

(f) Name two viral diseases each of:

(i) plants
(ii) humans

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Classification of Living Organisms – Theory Questions:

1 a. What is the classification of Living things?

Answer: This is the sorting/grouping/arranging of living things (in groups); according to their common /similar characteristics/features/shared qualities.

 

b. Name the scientist who developed the Binomial system of classification.

Answer: Carolus Linnaeus

 

c. State the reasons why it is necessary to classify living things.

Answer:

Reasons for the classification of living things:

  • to put every living organism into a systematic order/specific group;
  • for easy identification of similar living things; to indicate/show the relationships between different categories of living organisms;
  • to show evolutionary trends in different groups of living organisms;
  • to trace the geographical distribution of living organisms;
  • for easy reference;
  • for easy research/study.

 

2 a. Define the term taxonomy.

Answer: Taxonomy is the study of the principles of classifying groups of living organisms into hierarchies.

 

b. List seven major groups into which taxonomists classify living things in order of hierarchy.

Answer:

Kingdom → Phylum/Division → Class → Order → Family → Genus → Species

 

c. State the five kingdoms developed by Whittaker.

Answer: The five kingdom classifications by Whittaker are Monera, Protista, Fungi, Plantae and Animalia.

 

d. Give reasons why viruses do not fit into any of the five kingdoms.

Answer:

Viruses are not included in the five-kingdom classification because they do not have a cell structure and cannot reproduce.

 

e. State two features each which viruses have in common with:

(i) living things

Answer:

  • Protoplasm
  • Protein coat/membrane
  • It contains DNA/RNA

(ii) non-living things

Answer:

  • Appears as a crystasl
  • Lack organelles

 

f. Name two viral diseases each of:

(i) plants

Answer:

Cassava mosaic disease, Bean mosaic disease swollen shoot disease of cocoa, Groundnut rosette, maize streak, cucumber mosaic.

(ii) humans

Poliomyelitis, Chickenpox, Smallpox, Bird flu, Swine flu, Rabies, AIDS, Ebola, COVID-19

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