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Questions and Answers
Which characteristic of living organisms involves moving towards light?
Which characteristic of living organisms involves moving towards light?
What is NOT a feature of living organisms as summarized by MRS GREN?
What is NOT a feature of living organisms as summarized by MRS GREN?
In which kingdom would you classify fungi?
In which kingdom would you classify fungi?
Which classification rank is directly below 'Phylum' in the hierarchy of living organisms?
Which classification rank is directly below 'Phylum' in the hierarchy of living organisms?
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Which of the following is true regarding prokaryotes?
Which of the following is true regarding prokaryotes?
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Study Notes
Characteristics of Living Organisms
- Living organisms are identified by seven key features (MRS GREN):
- Movement: Ability to move (animals walking, plants growing towards light).
- Respiration: Release of energy from food (aerobic or anaerobic).
- Sensitivity: Response to stimuli (animals reacting to danger, plants bending towards sunlight).
- Growth: Increase in size or number of cells (a seed growing into a tree).
- Reproduction: Producing offspring (sexual or asexual).
- Excretion: Removal of waste products (carbon dioxide, urine).
- Nutrition: Obtaining food (plants make food, animals consume other organisms).
Classification of Living Organisms
- Grouping organisms based on similarities.
- Five kingdoms:
- Prokaryotes (Monera): Single-celled, no nucleus (bacteria).
- Protoctists: Single-celled, with a nucleus (amoeba, algae).
- Fungi: Absorb nutrients from decaying matter (mushrooms, yeast).
- Plants: Photosynthetic, multicellular (trees, flowers).
- Animals: Consume other organisms, multicellular (humans, fish).
Hierarchy of Classification
- Organism classification from largest to smallest:
- Kingdom → Phylum → Class → Order → Family → Genus → Species.
- Mnemonic: "King Philip Came Over For Good Soup".
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Description
This quiz explores the fundamental characteristics that define living organisms, known as MRS GREN, and delves into the classification of organisms across five kingdoms. Understand how movement, respiration, sensitivity, growth, reproduction, excretion, and nutrition are integral to life and the differences among various living species.
