Question 1

Decomposed plant litter produces a dark-colored organic material called _______.

Accepted Answer

The answer of Decomposed plant litter produces a dark-colored organic...

Question 2

Macronutrients

Accepted Answer

A)  are so called because they are more essential than micronutrients. 
B)  include manganese, boron, and zinc, among others. 
C)  function as catalysts. 
D)  are required in concentrations of at least 1 gram per kilogram of plant dry matter. 
E)  are obtained by the process of photosynthesis. 
A)  are so called because they are more essential than micronutrients. 
B)  include manganese, boron, and zinc, among others. 
C)  function as catalysts. 
D)  are required in concentrations of at least 1 gram per kilogram of plant dry matter. 
E)  are obtained by the process of photosynthesis.

Question 3

The process that is the opposite of nitrogen fixation is

Accepted Answer

A)  nitrification. 
B)  denitrification. 
C)  aerobic breakdown of amino acids. 
D)  release of ammonia. 
E)  nitrate reduction. 
A)  nitrification. 
B)  denitrification. 
C)  aerobic breakdown of amino acids. 
D)  release of ammonia. 
E)  nitrate reduction.

Question 4

Carnivorous plants have adapted to their environments by

Accepted Answer

A)  fixing nitrogen. 
B)  having very efficient nitrate uptake systems. 
C)  trapping insects and digesting them. 
D)  trapping bacteria to aid in digestion. 
E)  being parasitic. 
A)  fixing nitrogen. 
B)  having very efficient nitrate uptake systems. 
C)  trapping insects and digesting them. 
D)  trapping bacteria to aid in digestion. 
E)  being parasitic.

Question 5

Which of the following is not an essential mineral element for plants?

Accepted Answer

A)  Potassium 
B)  Magnesium 
C)  Calcium 
D)  Lead 
E)  Phosphorus 
A)  Potassium 
B)  Magnesium 
C)  Calcium 
D)  Lead 
E)  Phosphorus

Question 6

Clay in soil

Accepted Answer

A)  provides a reservoir of cation nutrients. 
B)  holds moisture. 
C)  binds mineral ions. 
D)  Both a and b 
E)  All of the above 
A)  provides a reservoir of cation nutrients. 
B)  holds moisture. 
C)  binds mineral ions. 
D)  Both a and b 
E)  All of the above

Question 7

Nutrients that are necessary for plant growth and reproduction, are not replaceable by another nutrient, and are required by the plant directly are called _______.

Accepted Answer

The answer of Nutrients that are necessary for plant growth...

Question 8

In the oceans and in fresh water, _______ are the main type of bacteria that fix nitrogen.

Accepted Answer

The answer of In the oceans and in fresh water,...

Question 9

Years of cotton farming in the South have stripped away much of the A horizon of the soils. Subsequent agriculture

Accepted Answer

A)  has been problematic, because the A horizon contains the most available nutrients. 
B)  has not been affected, because the B horizon contains significantly more available nutrients. 
C)  has been affected slightly, because the C horizon is most conducive to root growth. 
D)  has been problematic, because stripping of the A horizon leaches the C horizon of its nutrients. 
E)  All of the above 
A)  has been problematic, because the A horizon contains the most available nutrients. 
B)  has not been affected, because the B horizon contains significantly more available nutrients. 
C)  has been affected slightly, because the C horizon is most conducive to root growth. 
D)  has been problematic, because stripping of the A horizon leaches the C horizon of its nutrients. 
E)  All of the above

Question 10

Calcium

Accepted Answer

A)  plays a role in hormonal and environmental signaling. 
B)  is present in chlorophyll. 
C)  is a micronutrient. 
D)  is one of the "big three" macronutrients. 
E)  does not bind to clay particles. 
A)  plays a role in hormonal and environmental signaling. 
B)  is present in chlorophyll. 
C)  is a micronutrient. 
D)  is one of the "big three" macronutrients. 
E)  does not bind to clay particles.

Question 11

Describe how plants and bacteria interact to form nitrogen-fixing root nodules. Why do many farmers plant crops such as alfalfa and soybeans without harvesting them?

Accepted Answer

Plants and bacteria interact to form nit

Question 12

Based on your knowledge of plant nutrition and metabolism, predict which of the following processes would not be affected by a deficiency in iron.

Accepted Answer

A)  Chlorophyll synthesis 
B)  Photosynthesis 
C)  Cellular respiration 
D)  Glycolysis 
E)  Nitrogen fixation in nodules 
A)  Chlorophyll synthesis 
B)  Photosynthesis 
C)  Cellular respiration 
D)  Glycolysis 
E)  Nitrogen fixation in nodules

Question 13

Nickel was not discovered to be essential for plant growth until 1983. Why?

Accepted Answer

A)  It is required in very small amounts. 
B)  It may be stored in seeds. 
C)  It was likely present as a contaminant in other nutrients. 
D)  It could have been present in airborne salt particles. 
E)  All of the above 
A)  It is required in very small amounts. 
B)  It may be stored in seeds. 
C)  It was likely present as a contaminant in other nutrients. 
D)  It could have been present in airborne salt particles. 
E)  All of the above

Question 14

Nitrogen fixation is catalyzed by the enzyme _______, which cannot function in the presence of the element oxygen.

Accepted Answer

The answer of Nitrogen fixation is catalyzed by the enzyme...

Question 15

Which of the following is a micronutrient in plants?

Accepted Answer

A)  Potassium 
B)  Sulfur 
C)  Calcium 
D)  Iron 
E)  Magnesium 
A)  Potassium 
B)  Sulfur 
C)  Calcium 
D)  Iron 
E)  Magnesium

Question 16

The five component elements in most proteins are carbon,

Accepted Answer

A)  oxygen, sulfur, phosphorus, and potassium. 
B)  hydrogen, oxygen, nitrogen, and phosphorus. 
C)  hydrogen, oxygen, nitrogen, and sulfur. 
D)  hydrogen, nitrogen, sulfur, and potassium. 
E)  hydrogen, oxygen, phosphorus, and potassium. 
A)  oxygen, sulfur, phosphorus, and potassium. 
B)  hydrogen, oxygen, nitrogen, and phosphorus. 
C)  hydrogen, oxygen, nitrogen, and sulfur. 
D)  hydrogen, nitrogen, sulfur, and potassium. 
E)  hydrogen, oxygen, phosphorus, and potassium.

Question 17

Nitrogen fixers convert

Accepted Answer

A)  ammonia to N2. 
B)  N2 to ammonia. 
C)  ammonia to nitrate. 
D)  nitrate to ammonia. 
E)  N2 to nitrate. 
A)  ammonia to N2. 
B)  N2 to ammonia. 
C)  ammonia to nitrate. 
D)  nitrate to ammonia. 
E)  N2 to nitrate.

Question 18

Plants acquire their essential mineral nutrients from water and the _______.

Accepted Answer

The answer of Plants acquire their essential mineral nutrients from...

Question 19

Which of the following plants does not have nitrogen-fixing root nodules containing Rhizobium?

Accepted Answer

A)  Alfalfa 
B)  Beans 
C)  Clover 
D)  Peas 
E)  Rice 
A)  Alfalfa 
B)  Beans 
C)  Clover 
D)  Peas 
E)  Rice

Question 20

The most common gas in the atmosphere is

Accepted Answer

A)  CO2. 
B)  nitrogen. 
C)  oxygen. 
D)  ozone. 
E)  water vapor. 
A)  CO2. 
B)  nitrogen. 
C)  oxygen. 
D)  ozone. 
E)  water vapor.

Exam 36: Plant Nutrition

Decomposed plant litter produces a dark-colored organic material called _______.

Macronutrients

The process that is the opposite of nitrogen fixation is

Carnivorous plants have adapted to their environments by

Which of the following is not an essential mineral element for plants?

Clay in soil

Nutrients that are necessary for plant growth and reproduction, are not replaceable by another nutrient, and are required by the plant directly are called _______.

In the oceans and in fresh water, _______ are the main type of bacteria that fix nitrogen.

Years of cotton farming in the South have stripped away much of the A horizon of the soils. Subsequent agriculture

Calcium

Describe how plants and bacteria interact to form nitrogen-fixing root nodules. Why do many farmers plant crops such as alfalfa and soybeans without harvesting them?

Based on your knowledge of plant nutrition and metabolism, predict which of the following processes would not be affected by a deficiency in iron.

Nickel was not discovered to be essential for plant growth until 1983. Why?

Nitrogen fixation is catalyzed by the enzyme _______, which cannot function in the presence of the element oxygen.

Which of the following is a micronutrient in plants?

The five component elements in most proteins are carbon,

Nitrogen fixers convert

Plants acquire their essential mineral nutrients from water and the _______.

Which of the following plants does not have nitrogen-fixing root nodules containing Rhizobium?

The most common gas in the atmosphere is

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

Filters