Science Review

Science Review

Study Guide – Plant Growth and Change

1. Define the following words: 

• Germination
• How a plant begins to grow
• Pollination
• When an insect (like a bee) transfers pollen from one plant to another and fertilizes it
• Photosynthesis
• The process of turning sunlight and carbon dioxide into food for the plant
• Chlorophyll
• The chemical in a plant that makes it green and helps in photosynthesis

2. What are the similarities and differences between the basic needs of plants and humans? (HINT: see VENN diagram)

• We need each other
• Both need
• shelter, love, water, food, sunlight
• Plants need:
• Soil
• Humans need:
• Clothing

3. Describe the Oxygen Cycle. (HINT: What gases do plants and animals give off?)

• Plants give off oxygen and take in carbon dioxide
• Humans breathe out carbon dioxide and breathe in oxygen

 
4. What are some products that we can get from plants?

• Cotton - jeans/clothing
• Latex - rubber (from trees) and gum
• Paper

5. What is the purpose of a plant’s:

• Leaves - absorbs sunlight and makes food
• Stem - holds the plant up, brings water up from the roots
• Bulb - stores food over the winter for some plants
• Roots - holds the plant in the soil, absorbs water

6. What is function of the different parts of a flower?

• Stamen/Carpel - reproduction
• Sepals - protection of the bud
• Petals - brightly coloured to attract insects.

7. What is the difference between a fibrous and tap root?

• Fibrous - like a carrot - one long root with little hair-like roots coming off it
• Tap - like a marigold - many roots all the same length and tangled together

8. What is the difference between simple and compound leaves?

• Simple - one leaf blade with a rib and veins that flow up the leaf
• Compound - made up of many little leaves

9. Describe the different stages in the life cycle of a bean plant? (HINT: Look at your title page).

• Seed begins to grow -> leaves and roots develop -> flowers bloom on adult plant -> seeds form in the flower -> plant dies and seeds are scattered

10. What does the inside of a bean plant look like?

• Embryo (new plant)
• Cotyledon (stored food)
• Seed coat 

11. How do plants begin to grow? (ex. seed)

• Water softens the seed coat and causes the seed to swell
• The embryo grows
• The roots grow down into the soil
• The stem grows up above the soil 

 12. What are the different ways that seeds scan be dispersed for reproduction?

• Water
• Fire
• Wind
• Explosive
• Scat (animals)
• Hitch hikers