chapter 39- Plant Nutrition and Soils

Question 1

what are the 5 components of soil

Answer 1

1. inorganic particles (sand)
2. organic matter-decaying organisms
3. Living organisms-microorganisms
4. soil water (dissolved minerals)
5. soil atmosphere

Question 2

what is topsoil

Answer 2

mixture of mineral particles of varying sizes, living organisms, and humus

Question 3

What are the 9 macronutrients

Answer 3

Carbon, Oxygen, Hydrogen, Nitrogen, Potassium, Calcium, Magnesium, Phosphate, and Sulfur

Question 4

What is the importance of nitrogen fixing bacteria

Answer 4

Plants cant convert n2 to nh3 (nitrate), which they need, so a symbiotic relation developed

Question 5

whats the benefit of mycorrhizal fungi

Answer 5

expand surface area available for nutrient uptake

-enhance uptake of phosphorus and micronutrients

Question 6

Why do carnivorous plants eat bugs?

Answer 6

they get nitrogen that the soil lacks

Question 7

What is phytoremediation

Answer 7

use of plants to concentrate or breakdown pollutants

Question 8

What are the three types of phytoremediation

Answer 8

1. phytodegradation-contaminant is taken up from soil and broken down
2. phytovolatilization-contaminant is taken up form soil and released through stomata
3. phytoaccumulation-contaminant is taken up from soil and concentrted in shoots