Seed Germination Experiment Observations Quiz and Flashcards

Study Notes

When light passes from a less dense medium to a denser medium, it is refracted towards the normal.
When light passes from a denser medium to a less dense medium, it is refracted away from the normal.
Refraction does not occur when light strikes the surface at right angles.
The apparent depth of an object underwater is less than the real depth.

Carbohydrates:
- A food type that can be broken down to release energy
- Also known as starch
Protein:
- A food type that contains nitrogen
- Makes up the structural parts of body cells and tissues
Lipids:
- A food type that includes fats and oils
Minerals salts:
- Inorganic substances essential in small amounts for good health
Vitamins:
- Organic substance essential in small amounts for normal growth and good health

Dietary needs for different persons:
- Baby: more proteins and mineral salts
- Pregnant Mother: more proteins, calcium, iron, and vitamins D
Nutritional deficiency diseases and symptoms:
- Kwashiorkor
  - Hair loss
  - Swollen stomach
  - Swollen ankles, feet, and hands
  - Enlarged fatty liver
  - Diarrhea
  - Anemia
  - Loss of teeth
  - Loss of skin color
  - Loss of appetite
- Marasmas
  - Swollen stomach
  - Dry skin
  - Loose skin folds
  - Extreme hunger
  - General tissue and muscle wasting
- Rickets
- Scurvy
- Anemia
- Depression

When positioning seeds, arrange at a 45⁰ angle so that their radicals (roots) point upwards and their plumules (shoots) point downwards.
Place in a warm, sunny place and ensure the cotton wool is kept moist at all times.
Observations and results:
- Roots of germinating seeds curve away from the top of the beaker and grow downwards.
- Shoots of germinating seeds curve away from the bottom of the beaker and grow downwards.
Conclusion:
- Stems are negatively geotropic (growing upwards).
- Roots are positively geotropic (growing downwards).