11 of 84
Chapter 4: PLANT STRUCTURES AND THEIR USES
Answers to Review Questions
TRUE/FALSE
1. Potatoes are a type of stem.
2. Plants reproduce asexually.
3. Leaves serve as the reproductive organs for many plants.
4. Some species of plants have male flowers and female flowers on one plant.
5. Nectar is a pesticide.
6. Aerial roots are common in cold areas.
7. Plants are often used to slow down or stop erosion.
8. Whorled leaves refer to two or more leaves that grow around the stem at the same
node.
9. Leaves are where the manufacture of food takes place.
10. In a process known as photosynthesis, the energy of sunlight is used to produce
nutrients.
MULTIPLE CHOICE
1. At the very tip of the stem is a small knob called the
2. The structure inside the stem that carries the water and nutrients from the roots
to the leaves is the
3. Flowers are really just specialized
4. Those plants that reproduce sexually have
5. Honeybees are particularly adept at
6. Most tree roots are
7. The xylem of tree stems provides fiber for making
8. The male part of the plant is called the
10. Seeds produced on plants often are encased in
DISCUSSION
1. Why are plants so essential to us?
2. What are the major parts of plants?
3. What are the functions of the xylem and phloem?
4. What are some uses humans make of plant stems?
5. What are the parts of the flower?
6. Why are insects important to flowers?
7. List the main types of roots.
8. Why is the production of seed one of the most important links in the agriculture
industry?
9. For what purposes can leaves be used?
10. How are bees used in agriculture?
11. Explain how plants help clean the air.
12. Define and explain the process of transpiration.