BIOL 1106 Classwork
Spring 2019
Lesson 4: Plant Nutrition and Defense
(20 pts) -
KEY
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Lesson Objectives:
2.
Describe the nutritional requirements of plants and how plants extract these nutrients from the
soil.
3.
Explain how carnivorous adaptations, parasitism, and mutualism can improve nutrient
acquisition.
5.
Describe mutualistic interactions between plants and animals that provide defense for plants.
7.
Distinguish between wound response and pathogen response and the signals involved in each.
S1.
Apply scientific reasoning to biological problems
S3.
Interpret and draw conclusions from scientific data
S5.
Utilize common bioinformatics tools and databases
Part I: Special Nutritional Strategies Table
(6 pts; 0.5 pts per cell)
Complete the table.
Plant Nutritional
Strategy
Primary nutrient or
nutrient category
obtained by plant.
Is this strategy
common or rare
among plant
species?
Example plants
Symbiosis with
Rhizobium bacteria
1. Nitrogen
2. Rare
3. Legumes
Symbiosis with
Mycorrhizal fungi
4. Phosphate and some
micronutrients
5. Common
6. Most plants
7. Carnivory
(carnivorous
8. Nitrogen
9. rare
Pitcher plants,
sundews, etc
10. Parasitism
11. All or many
nutreints, even carbs
12. Rare
Indian pipe dodder
14.
(1 pt) The biosphere of Earth as we know it depends on the existence of a few species of
nitrogen-fixing prokaryotes. What do you think might happen if all of them became extinct?
Defend your answer.
Reasonable answer may vary, but the justification must be logical. For example, because nitrogen
fixation is needed for plants to build proteins, plant life might slowly die off, followed by animals. Or
This graded assignment is subject to the Virginia Tech Honor Code.
Sharing or posting any content
from this assignment, or using such shared or posted assignment content to answer assignment
questions, is a violation of the Virginia Tech Honor Code.
1
BIOL 1106 Classwork
Spring 2019
