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SS1: BIOLOGY - 1ST TERM

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  1. Introduction to Biology | Week 1
    6 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 & Answers – Kingdom Fungi & Kingdom Plantae

Theory Questions – Kingdom Fungi & Kingdom Plantae:

1a. List five characteristics of the kingdom fungi

b. State the differences between bacteria and fungi

c. State five economic importance of fungi

 

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Theory Questions – Kingdom Fungi & Kingdom Plantae

1a. List five characteristics of the kingdom fungi

Answer:

  • They are either unicellular (yeast) or multicellular (Mushroom, Rhizopus)
  • Their cell wall made up of chitin
  • They reproduce asexually (budding, Spore formation) and sexually by conjugation.
  • Carry out  extracellular digestion
  • They are saprophytic and obtain their food from dead decaying organic matter.
  • They are made up of a network of thread-like structures called hyphae.
  • Some form mutualistic association with algae (in lichens).

 

b. State the differences between bacteria and fungi

Answer:

  Bacteria: Fungi:
1. They are prokaryotic (no definite nucleus and other organelles bounded membrane). They are eukaryotic.
2. They can be autotrophic They are heterotrophic
3. They are unicellular They are multicellular except yeast.
4. They reproduce asexually by binary fission. They reproduce asexually by budding or spore formation.
5. Some are motile and have flagellum. They are non-motile.

 

c. State five economic importance of fungi

Answer:

  • Some serve as food for man
  • Used industrially to produce alcoholic beverages like wine and beer.
  • They can be used as an anti-biotic.
  • They are saprophytic and help to break down dead bodies.
  • They cause food spoilage
  • They cause plant (e.g. rice blast disease, black pod disease of cocoa, leaf spot of yam) and animal diseases (ringworm)
  • They destroy leather and fabrics

 

d. Give five examples of fungi

Answer: – Yeast, Mushroom, Penicillium, Fusarium, Mould, Toadstool, Puffballs, Brackets.  

 

2a. How would you differentiate a fungi from a plant?

Answer:

Fungi Plants
Do not have chloroplast Have chloroplast
Have cell wall made of chitin Have cell wall made of cellulose
Store carbohydrates as glycogen Stores carbohydrates as starch
Saprophytic and show extracellular digestion Autotrophic

 

b. In a tabular form, state five differences between a monocot plant and a dicot plant.

Answer:

S/n   Monocots: Dicots:
1. Embryo They possess only one cotyledon
in their seeds.

 They possess two cotyledons
in their seeds.
2. Roots They have a fibrous root system.

 They have a tap root system.
3. Flowers Floral parts are arranged in threes
and multiples of threes.

 Floral parts are arranged in
fours and fives.
4. Leaves Their leaves have parallel venation.

 Their leaves have net venation.
5. Secondary
Growth		 They do not undergo secondary growth. They undergo secondary growth.
6. Germination They exhibit hypogeal germination.
i.e. the cotyledon is returned below the soil.

 They exhibit epigeal germination. i.e.
the cotyledons shoot out to the soil surface.
7. Stem
Structure		 Vascular bundles are scattered.

 Vascular bundles of stem are
arranged in rings.

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