Question 1

Studies of a soybean plant ( Glycine max )and the bacterium Bradyrhizobium japonicum have shown that the tip of a root hair curls toward the bacterium in response to ____. ​

Accepted Answer

A) a flavonoid released by soybean roots 
B) nod gene products produced by soybean roots 
C) nod gene products produced by the bacterium 
D) nitrogen fixation by the bacterium 
E) a flavonoid produced by the bacterium 
A) a flavonoid released by soybean roots 
B) nod gene products produced by soybean roots 
C) nod gene products produced by the bacterium 
D) nitrogen fixation by the bacterium 
E) a flavonoid produced by the bacterium C

Question 2

Why might a soil that has a sufficient concentration of a mineral element, for example, calcium, not have sufficient availability of the element to maximize plant growth rates?

Accepted Answer

Chemical reactions in soils are dependent on soil pH. If the pH is too high or too low, the nutrient element can be in a form that is unavailable to roots. Therefore, pH can have a major impact on whether plant roots take up various mineral cations, independent of the concentration on the mineral element in the soil.

Question 3

Match between columns
                        Premises: Subsoil

Accepted Answer

The Answer of  B and A and  C is...

Question 4

The most common limit to plant growth is a lack of ____. ​

Accepted Answer

A) phosphorous 
B) carbon 
C) hydrogen 
D) oxygen 
E) nitrogen 
A) phosphorous 
B) carbon 
C) hydrogen 
D) oxygen 
E) nitrogen

Question 5

Mycorrhizae, present for most plant species, generally do not help roots with the uptake of ____. ​

Accepted Answer

A) water 
B) nitrogen 
C) phosphate 
D) carbon 
E) sugars 
A) water 
B) nitrogen 
C) phosphate 
D) carbon 
E) sugars

Question 6

What element is considered an essential macronutrient for plants? ​

Accepted Answer

A) gold 
B) manganese 
C) chromium 
D) nitrogen 
E) copper 
A) gold 
B) manganese 
C) chromium 
D) nitrogen 
E) copper

Question 7

Ectomycorrhizae hyphae pass through the walls of the cells in the root cortex.

Accepted Answer

A) True 
 B)False

Question 8

Plants can generally absorb and make use of nitrogen in the form of ____. ​

Accepted Answer

A) NO3  -  only 
B) both NO3  -  and NH4+ 
C) NH4+ only 
D) N2 only 
E) both N2 and NH4+ 
A) NO3  -  only 
B) both NO3  -  and NH4+ 
C) NH4+ only 
D) N2 only 
E) both N2 and NH4+

Question 9

The process of adding hydrogen to N2, creating NH3 and eventually NH4+, and which requires a substantial input of ATP, is called ____. ​

Accepted Answer

A) nitrification 
B) ammonification 
C) nitrogen cycling 
D) nitrogen fixation 
E) nitrogen assimilation 
A) nitrification 
B) ammonification 
C) nitrogen cycling 
D) nitrogen fixation 
E) nitrogen assimilation

Question 10

Match between columns
                        Premises: lithium

Accepted Answer

The Answer of not generally considered an essential nutrient and is...

Question 11

Soil mineral particles that are less than 0.002 mm in diameter are called ____. ​

Accepted Answer

A) sand 
B) humus 
C) clay 
D) silt 
E) microparticles 
A) sand 
B) humus 
C) clay 
D) silt 
E) microparticles

Question 12

Which of the following is mostly performed by bacteria living within the roots of plants in the legume family? ​

Accepted Answer

A) nitrification 
B) ammonification 
C) nitrogen cycling 
D) nitrogen fixation 
E) nitrogen assimilation 
A) nitrification 
B) ammonification 
C) nitrogen cycling 
D) nitrogen fixation 
E) nitrogen assimilation

Question 13

The surfaces of clay particles in soil ____. ​

Accepted Answer

A) often bear positively charged ions 
B) release water to plants easily 
C) often bear negatively charged ions 
D) are generally hydrophobic 
E) acidify the soil 
A) often bear positively charged ions 
B) release water to plants easily 
C) often bear negatively charged ions 
D) are generally hydrophobic 
E) acidify the soil

Question 14

If nitrifying bacteria were not present in a soil, plants would ____. ​

Accepted Answer

A) take up nitrogen for their use mainly as NH4+ 
B) not survive because they could not get useful nitrogen 
C) take up nitrogen for their use mainly as N2 
D) take up nitrogen for their use mainly as NH3 
E) take up nitrogen for their use mainly as NO3  -  
A) take up nitrogen for their use mainly as NH4+ 
B) not survive because they could not get useful nitrogen 
C) take up nitrogen for their use mainly as N2 
D) take up nitrogen for their use mainly as NH3 
E) take up nitrogen for their use mainly as NO3  -

Question 15

Research in Colorado's San Juan Mountains has illustrated that in comparison to stands of lodgepole pine and Englemann spruce, stands of trembling aspen are not likely to ____. ​

Accepted Answer

A) grow in warmer soil 
B) grow in soil with higher nitrate concentrations 
C) be associated with different arrays of soil-dwelling organisms 
D) allow more sunlight to reach the soil surface 
E) retain their leaves through the winter 
A) grow in warmer soil 
B) grow in soil with higher nitrate concentrations 
C) be associated with different arrays of soil-dwelling organisms 
D) allow more sunlight to reach the soil surface 
E) retain their leaves through the winter

Question 16

Animals trapped and digested by "carnivorous" plants such as the cobra lily are used primarily as ____. ​

Accepted Answer

A) an energy supplement during winter months 
B) a carbon source for the plant 
C) a nutrient supplement in nutrient-deficient environments 
D) food for bacteria and fungi that grow symbiotically with the plant roots 
E) an energy supplement for small plants growing in shady areas 
A) an energy supplement during winter months 
B) a carbon source for the plant 
C) a nutrient supplement in nutrient-deficient environments 
D) food for bacteria and fungi that grow symbiotically with the plant roots 
E) an energy supplement for small plants growing in shady areas

Question 17

Match between columns
                        Premises: arsenic

Accepted Answer

The Answer of not generally considered an essential nutrient and is...

Question 18

The process of producing NH4+ from decaying organic material is called ____. ​

Accepted Answer

A) nitrification 
B) ammonification 
C) nitrogen cycling 
D) nitrogen fixation 
E) nitrogen assimilation 
A) nitrification 
B) ammonification 
C) nitrogen cycling 
D) nitrogen fixation 
E) nitrogen assimilation

Question 19

In arid regions, a deep root system is more common than a shallow-but-broad system.

Accepted Answer

A) True 
 B)False

Question 20

The enzyme nitrogenase is most directly involved in the process called ____. ​

Accepted Answer

A) nitrification 
B) ammonification 
C) nitrogen cycling 
D) nitrogen fixation 
E) nitrogen assimilation 
A) nitrification 
B) ammonification 
C) nitrogen cycling 
D) nitrogen fixation 
E) nitrogen assimilation

Exam 35: Plant Nutrition

Studies of a soybean plant ( Glycine max )and the bacterium Bradyrhizobium japonicum have shown that the tip of a root hair curls toward the bacterium in response to ____. ​

Why might a soil that has a sufficient concentration of a mineral element, for example, calcium, not have sufficient availability of the element to maximize plant growth rates?

The most common limit to plant growth is a lack of ____. ​

Mycorrhizae, present for most plant species, generally do not help roots with the uptake of ____. ​

What element is considered an essential macronutrient for plants? ​

Ectomycorrhizae hyphae pass through the walls of the cells in the root cortex.

Plants can generally absorb and make use of nitrogen in the form of ____. ​

The process of adding hydrogen to N2, creating NH3 and eventually NH4+, and which requires a substantial input of ATP, is called ____. ​

Soil mineral particles that are less than 0.002 mm in diameter are called ____. ​

Which of the following is mostly performed by bacteria living within the roots of plants in the legume family? ​

The surfaces of clay particles in soil ____. ​

If nitrifying bacteria were not present in a soil, plants would ____. ​

Research in Colorado's San Juan Mountains has illustrated that in comparison to stands of lodgepole pine and Englemann spruce, stands of trembling aspen are not likely to ____. ​

Animals trapped and digested by "carnivorous" plants such as the cobra lily are used primarily as ____. ​

The process of producing NH4+ from decaying organic material is called ____. ​

In arid regions, a deep root system is more common than a shallow-but-broad system.

The enzyme nitrogenase is most directly involved in the process called ____. ​

Introduction to Biological Concepts and Research

Life, Chemistry, and Water

Biological Molecules: the Carbon Compounds of Life

Cells

Membranes and Transport

Energy, Enzymes, and Biological Reactions

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

Cell Division and Mitosis

Meiosis: the Cellular Basis of Sexual Reproduction

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

DNA Structure, Replication, and Organization

From DNA to Protein

Regulation of Gene Expression

Bacterial and Viral Genetics

Dna Technologies: Making and Using Genetically Altered Organisms, and Other Applications

Genomes and Proteomes

The Development of Evolutionary Thought

Microevolution: Genetic Changes Within Populations

Speciation

Paleobiology and Macroevolution

Systematic Biology: Phylogeny and Classification

The Origin of Life

Prokaryotes and Viruses

Protists

Seedless Plants

Seed Plants

Fungi

Animal Phylogeny, Acoelomates, and Protostomes

Deuterostomes: Vertebrates and Their Closest Relatives

The Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Information Flow and the Neuron

Nervous Systems

Sensory Systems

The Endocrine System

Muscles, Bones, and Body Movements

The Circulatory System

Defenses Against Disease

Gas Exchange: the Respiratory System

Animal Nutrition

Regulating the Internal Environment

Animal Reproduction

Animal Development

Ecology and the Biosphere

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Biodiversity and Conservation Biology

Animal Behavior

Filters

Studies of a soybean plant ( Glycine max )and the bacterium Bradyrhizobium japonicum have shown that the tip of a root hair curls toward the bacterium in response to ____.

The most common limit to plant growth is a lack of ____.

Mycorrhizae, present for most plant species, generally do not help roots with the uptake of ____.

What element is considered an essential macronutrient for plants?

Plants can generally absorb and make use of nitrogen in the form of ____.

The process of adding hydrogen to N₂, creating NH₃ and eventually NH₄⁺, and which requires a substantial input of ATP, is called ____.

Soil mineral particles that are less than 0.002 mm in diameter are called ____.

Which of the following is mostly performed by bacteria living within the roots of plants in the legume family?

The surfaces of clay particles in soil ____.

If nitrifying bacteria were not present in a soil, plants would ____.

Research in Colorado's San Juan Mountains has illustrated that in comparison to stands of lodgepole pine and Englemann spruce, stands of trembling aspen are not likely to ____.

Animals trapped and digested by "carnivorous" plants such as the cobra lily are used primarily as ____.

The process of producing NH₄⁺ from decaying organic material is called ____.

The enzyme nitrogenase is most directly involved in the process called ____.