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SS1: BIOLOGY - 1ST TERM

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



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Lesson 2, Topic 3
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Theory Questions
– Recognizing Living Things

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Recognizing Living Things – Theory Questions:

1a. State five characteristics of living things
1b. Explain any of the three characteristics listed in (1a) above.
2. In a tabular form show how plants and animals differ in some characteristics.

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Responses

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Recognizing Living Things – Theory Questions:

1a. State five characteristics of living things

Answer:

Movement, Nutrition, Irritability, Growth, Excretion, Reproduction, Respiration, Competition, Adaptation, Life Span, Cellular Structure.

 

1b. Explain any of the three characteristics listed in (1a) above.

Answer:

i. Cellular Structure: All living things are made up of one or more cells.

ii. Competition: All living things struggle for survival in order to live. They struggle for space, light, water, food, shelter, reproductive mates, etc.

iii. Adaptation: Living things are able to suit or modify themselves to cope with changes within their internal and external environment.

 

2. In a tabular form show how plants and animals differ in some characteristics.

Answer:

CHARACTERISTICS PLANTS ANIMALS
Nutrition Autotrophic i.e. they can make their own food by photosynthesis. Heterotrophic i.e. they depend on plants and other animals for food.
Movement Usually rooted and movement limited to plant parts. They can move from place to place with the help of locomotive organs.
Growth Growth is Apical (only at the tip of the root and not the tip of the shoot) and is indefinite. Growth is all around and stops at the adult stage.
Irritability Response to stimulus is slow. Response to stimulus is fast.
Cellular
Structure
Presence of Cellulose cell wall.

Presence of large vacuole.

Centrioles absent.

Absence of cell wall.

Absence of vacuoles but very small if present.

Centrioles present

Excretion Lack of specialized organs for removing excreting wastes. Possess specific organs for excretion, respiration and coordination.
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