Unit 4: Lesson 16

1. True or false: Ginseng helps improve stamina; provides resistance to stress and disease; sedates and stimulates the central nervous system

True

False

2. True of false: The nitrogen and potassium are still needed for healthy plant growth, but in lower percentages.

True

False

3. Which plants can be used for medical purposes?

Cocoa plant and aloe vera

Dandelion and white willow

Cinnamon and ginger

All of the above

4. True of False. One way of improving both crop resistance and yield is to cross-breed crops with wild relatives.

True

False

5. The lack of ____________ produces the yellow leaves and causes slow plant growth.

Oxygen

Nitrogen

Hydrogen

None of the above

6. True or False: Keeping native crops and animals in place minimizes pest problems.

True

False

7. True of False. Sustainable Agriculture refers to the land -- sustaining the health of farmland and the environment. It also refers to people in the farming industry -- sustaining the social and economic health of farmers, their families and their communities.

True

False

8. True or False: By alternating one crop for a more drought-tolerant crop that requires less water, less fertilizer and water are needed for the plant to grow

True

False

9. __________ are wax- coating oils that a plant secretes to fill a wound. It is used as rosin, varnish, paper stiffener and soap.

Resin

Gum

Latex

Chicle

10. The high concentration of _______________ causes the flower and fruit production to increase.

Phosphates

Nitrogen

Oxygen

None of the above

11. ____________ are substances that kill or slow the growth of plants that humans consider weeds.

Pesticides

Herbicides

Biological Magnification

A and B

12. __________ is a milky, clear juice found in rubber plants. It is used to make surgical gloves, paints and other things.

Gum

Latex

Chichle

A and B

13. Which three are known as wetlands.

Marshes, Swamps and Peatlands

Marshes, Swamps, and forests

Hydroponics, Swamps and Forests

None of the above

14. ____________ is the water that runs along the surface of the ground and into the local water system.

Runoff

Sewage

Groundwater

None of the above

15. Two steps that can be taken to improve water quality and avoid soil nutrient depletion are:

Crop rotation and using cover crops

Reducing tillage and avoiding traffic on wet soil

Planting pest-resistant crops and raising farm animals and plants on thesame farms

All of the above can be taken to improve water quality and avoid soil nutrient depletion.

16. _______ are the wound or injury products produced by plants. It is used in stamps, envelopes, chewing gum, candy and paint.

Gums

Latex

DDT

Cuts

17. Which combination of materials and conditions are needed for seed germination?

Enough water to digest stored food and enable growth of embryo

Pesticides and herbicides

Oxygen for the seedling to carry out aerobic respiration

Temperature of 15-20 degrees Celsius

A, C and D are correct

18. True or False. Canada is the largest exporter of forest products in the world.

True

False

19. _____________ is a natural process found in wetlands where micro-organisms break down the organic materials that remains in the water.

Filtration

Bioremediation

Sewage System

Run off

20. What do organic food advocates argue?

The the use of chemicals is very harmful to our health

That if more people bought organic food, the price would eventually drop to more affordable levels

None of the above

A and B

21. True or False: By walking on wet soil, the soil is compacted and able to hold less water, which means the nutrients are washed from the soil more easily.

True

False

22. True or False. The eagles are killed because they are at high tropic level and ingest a large amount of pesticides.

True

False

23. What kind of trees can be found in Boreal forests?

There are no tress in boreal forests.

Deciduous trees

Cone-bearing trees

B and C

24. Why is it better to use plants as insecticides?

Because they can be broken down by other living things without harmful results.

It pollutes the streams and groundwater.

It is not better to use plants as insecticides.

None of the above

25. True or False. Any wood plant, such as maple or oak can be used to make the following items: furniture, paper, plastics, rayon, dyes, fuel.

True

False

26. In a bag of fertilizer used to increase flower or fruit production, what does the middle number represent?

Percentage of Phosphorus

Percentage of Nitrogen

Percentage of Protein

None of the above

27. What best defines biological magnification?

Biological magnification is when substances become more concentrated in organisms at higher trophic levels.

Biological magnification is when substances become less concentrated in organisms at lower trophic levels.

Biological magnification is when organisms become more concentrated in substances at higher trophic levels.

None of the above

28. _________________ provide a way to purify waste water at a lower cost than water treatment plants.

Wetlands

Farmlands

Boreal Forests

None of the above

29. Which forest contains deciduous trees that shed their leaves in autumn?

Boreal Forests

Tundra Forests

Appalachian Forests

Temperate Forests

30. ________ are used to ward off pests that can harm the growth of crops.

Pesticide

Herbicide

Biological Magnification

A and B

31. The lack of ______________ causes the leaves, fruit, and roots to be small.

Protein

Calcium

Sun

Water

32. If ____________ is reduced, then there is less use of pesticides and nitrates.

Tillage

Planting

Sun Coverage

B and C

33. True or False: Water treatment plants also provide a habitat to many living organisms.

True

False

34. Which steps do not improve water quality and soil nutrient depletion:

Plants that cover the soil do not allow the Sun to evaporate water from the soil.

Alternating one crop for a more drought-tolerant crop.

Avoiding accidental spill of damaging materials.

None of the above

35. What can be done to improve wetlands?

Planting crops that will hold the soil in place.

Use environmentally friendly products

Use more pesticides and herbicides.

B and C are correct