How are plants important to humans?


Targets
At the end of this unit, you should be able to answer the following questions:

1. What is the importance of plants?

1.1 How are plants important to humans?

1.2 How are plants important to their natural environments?

1.3 How do humans affect plants?
2. How do plants grow and make other plants?

2.2 What do plants need to grow?

2.3 How do flowering plants propagate?

2.4 How are seeds distributed?
3. What are plant communities?

3.1 What are plant communities?

3.2 What do plants living in my backyard have in common?

3.3 What plants have special needs? 
Targets
Imagine if you walked outside one morning and all the plants on Earth were gone.

How do you think that would affect you?  Do we need plants?  Why are plants important to humans?

 Notebook

  1. Open the Journal Entry page you saved to your Plant Notebook folder. 
  2. Write your responses to the above questions under Entry 2. 
  3. Check your answers below, and remember to date and save your completed journal entry to your Plant Notebook. 
 

Check Your Answers


2. 
a. If there were no more plants on Earth, how would that affect you?
  • Oxygen would be used up (we need it to breathe)
  • Carbon dioxide would increase (that's the waste gas that we breathe out, and plants use it to make food for themselves and oxygen for us)
  • Most of our food would be gone (All of our fruit, vegetables and grains come from plants.  Even the animals that we use for meat, eat plants to grow.
  • A lot of our clothing has some natural fibre in it.  Cotton, and bamboo clothing both come from plants, and wool comes from animals (which need to eat plants to live).
b. We do need plants to live.
c. Plants are important to humans because we use them for everything.  They make the air we need to breathe, provide us with food, shelter and clothing.