1. Chapter 17: Plant Structure and Nutrient Support Clicker Questions by Kris Curran, University of Wisconsin-Whitewater

2. Which part of a plant evolved to help the plant acquire water and nutrients? 1.Roots 2.Stems 3.Leaves 4.All of the above

3. Roses typically have five petals. Therefore, we would categorize these plants as: 1.Bryophytes 2.Mosses 3.Monocots 4.Dicots

4. Plants regulate water loss and gain in the ________________ located in the leaves while most metabolic activities occur in the ___________, part of the ground tissue. 1.xylem; collenchyma 2.guard cells; sclerenchyma 3.phloem; parenchyma 4.guard cells; parenchyma

5. In a carrot plant, food is stored in a structure called a ___________ root and in cells called ___________ cells. 1.fibrous; parenchyma 2.fibrous; collenchyma 3.tap; parenchyma 4.tap; collenchyma

6. Which part of the stem contains undifferentiated cells? 1.Cortex 2.Apical meristem 3.Xylem 4.Phloem 5.Vascular bundles

7. Which example below is NOT a stem? 1.Onion bulb 2.White potato 3.Tree trunk 4.Sweet potato 5.Daffodil bulb

8. Which leaf cells below are photosynthetic? 1.Guard cells 2.Xylem 3.Palisade cells 4.Spongy mesophyll cells 5.3 and 4 6.All of the above

9. Which structure(s) can act as a seal to decrease water loss from the leaf due to evaporation? 1.Thick cuticle 2.Stomata with guard cells 3.Leaf hairs 4.1 and 2 5.All of the above

10. When humans compost their food waste they are creating a type of soil called ________, which is rich in organic materials. 1.Humus 2.Clay 3.Sand 4.Silt

11. Which answer is a usable form of nitrogen for plants that is produced by bacteria? 1.Nitrogen gas 2.Nitrogen oxide 3.Ammonia 4.Nitrates 5.3 and 4 6.All of the above

12. Cohesion-tension theory explains how the polarity of water molecules helps in their transport from the roots to the top of the plant. Why are minerals also transported in this fashion? 1.The minerals are charged and therefore dissolved in the water. 2.The minerals are light in weight and therefore carried upward by the flow of the water. 3.The minerals are moved through the phloem. 4.Minerals are collected from the air and travel down through the xylem to the roots.

13. Classroom Catalyst Celery Water Transport

14. If we were to repeat this experiment, which growing condition would lead to the fastest migration of colored water to the leaves when compared to our original experiment? 1.Fill the glass three quarters full of water. 2.Keep the glass of water + celery in cooler, dark room. 3.Keep the glass of water + celery in a warmer, well-lit room. 4.Fill the glass with warm water.

15. Where does the pressure for the pressure-flow mechanism come from? 1.Active transport of sugars into the phloem. 2.Diffusion of water into phloem that is high in sugar. 3.Pumps in the leaves that drive the phloem away from sites of photosynthesis. 4.A combination of 1 and 2. 5.All of the above.