Question 1

In many crops, nitrogen deficiencies cause _______ leaves to become _______.

Accepted Answer

Nitrogen deficiencies cause older leaves to turn yellow due to chlorosis. Younger leaves may also be affected, but they usually do not show symptoms until later stages of the deficiency. Orange or brown spotting is typically not associated with nitrogen deficiency.

Question 2

Use the following to answer questions:
Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all.
-This mineral is necessary for water and ion balance.

Accepted Answer

Potassium is necessary for water and ion balance in plant cells.

Answer: E
 Iron is necessary for plants to produce chlorophyll, which is necessary for photosynthesis. It is not necessary for water and ion balance.

The other minerals listed are also important for plant growth and development, but do not match the given description. Magnesium is necessary for chlorophyll production and enzyme function, nitrogen is necessary for protein synthesis and overall growth, and phosphorus is necessary for energy transfer and root development.

Question 3

Clay in soil

Accepted Answer

Clay in soil provides a reservoir of cation nutrients, holds moisture, and binds mineral ions, making all the options correct.

Question 4

Which mineral is deficient in a plant whose growth is stunted and whose oldest leaves turn yellow and die prematurely?

Accepted Answer

Nitrogen deficiency in plants leads to stunted growth and causes older leaves to turn yellow and die prematurely due to its role in chlorophyll production and protein synthesis.

Question 5

Iron deficiencies cause _______ leaves to become _______.

Accepted Answer

Iron deficiencies cause young leaves to become yellow.

Question 6

Use the following to answer questions:
Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all.
-This micronutrient is necessary for chlorophyll synthesis.

Accepted Answer

Magnesium is necessary for chlorophyll synthesis in plants.

Question 7

The process of ion exchange is the means by which

Accepted Answer

Ion exchange in soils typically involves the replacement of positive ion nutrients (cations) by hydrogen ions (H⁺), which is a common process in soil chemistry affecting nutrient availability.

Question 8

Which of the following is not a consequence of adding lime to acidic soil?

Accepted Answer

The answer of Which of the following is not a...

Question 9

Use the following to answer questions:
Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all.
-When bonded to oxygen atoms, this mineral is important in many energy-storing and energy-releasing pathways where ATP is necessary.

Accepted Answer

Phosphorus is essential in the formation and breakdown of ATP, which is the primary energy source for cells.

Answer: A
 Magnesium is required for the activation of ATP and many enzymes involved in energy metabolism.

Answer: E
 Iron is a component of several enzymes involved in energy metabolism, including cytochrome oxidase which is necessary for cellular respiration.

Answer: D
 Potassium is not directly involved in energy metabolism, but it plays a role in maintaining cell membrane potentials which are important for nerve and muscle function.

Answer: B
 Nitrogen is important for the synthesis of nucleotides which are the building blocks of DNA and RNA, but it is not directly involved in energy metabolism.

Question 10

The best topsoils are composed of

Accepted Answer

Topsoils are the most fertile layers of soil and are composed of a mixture of organic matter, sand, and clay. Organic matter provides nutrients for plants, sand allows for drainage, and clay helps to hold water and nutrients.

Question 11

The ionization of carbonic acid

Accepted Answer

The answer of The ionization of carbonic acid
...

Question 12

The advantage of adding organic fertilizers (as opposed to inorganic fertilizers) to soils is that organic fertilizers

Accepted Answer

Organic fertilizers, such as compost, manure, and other natural materials, contribute to the improvement of soil structure by promoting the growth of beneficial microorganisms and improving soil water-holding capacity, soil aeration, and drainage. This, in turn, enhances soil fertility and promotes plant growth. Inorganic fertilizers, which are derived from non-living sources, such as mined minerals and synthetic compounds, may not have the same benefits for soil health and structure.

Question 13

Use the following to answer questions:
Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all.
-This mineral is a constituent of both proteins and nucleic acids.

Accepted Answer

Nitrogen is a key component of amino acids, which are the building blocks of proteins, and it is also found in nucleic acids like DNA and RNA.

Question 14

Soil scientists recognize _______ major horizons: _______.

Accepted Answer

Soil scientists recognize three major horizons: A, B, and C. The A horizon is the topsoil, the B horizon is the subsoil, and the C horizon is the parent material from which the soil developed.

Question 15

Which three elements are most commonly added to agricultural soils in fertilizers?

Accepted Answer

Nitrogen, potassium, and phosphorus are known as the primary macronutrients needed in the largest amounts by plants for growth and development.

Question 16

If a new essential nutrient were discovered, it would be a

Accepted Answer

Essential nutrients are typically micronutrients that are required in small quantities for various physiological processes in the body. Macronutrients, on the other hand, are required in larger quantities and are already well-established essential nutrients. Rare gases and small organisms are not relevant to the concept of essential nutrients.

Question 17

In almost all plants, roots get oxygen from

Accepted Answer

Roots primarily obtain oxygen from air spaces in the soil, which is essential for respiration.

Question 18

The maximum diameter of a clay particle is _______ $\mu$m.

Accepted Answer

The answer of The maximum diameter of a clay particle...

Question 19

Chemical weathering, an important part of soil formation, includes the

Accepted Answer

Chemical weathering refers to the breakdown of rocks by chemical processes. Hydrolysis is a type of chemical weathering where water reacts with minerals in the rock, causing them to break down and form new compounds. This process is important in soil formation as it helps to release nutrients that are necessary for plant growth. Choices A, B, D, and E refer to physical weathering processes, which break down rocks by physical means (e.g. temperature changes, erosion, etc.).

Question 20

Most earthworms can be found in

Accepted Answer

Most earthworms are found in the topsoil layer, but some can also be found in the subsoil layer. Bedrock is too deep and hard for earthworms to survive in.

Quiz 36: Plant Nutrition

In many crops, nitrogen deficiencies cause _ leaves to become _.

Use the following to answer questions: Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all. -This mineral is necessary for water and ion balance.

Clay in soil

Which mineral is deficient in a plant whose growth is stunted and whose oldest leaves turn yellow and die prematurely?

Iron deficiencies cause _ leaves to become _.

Use the following to answer questions: Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all. -This micronutrient is necessary for chlorophyll synthesis.

The process of ion exchange is the means by which

Which of the following is not a consequence of adding lime to acidic soil?

The best topsoils are composed of

The ionization of carbonic acid

The advantage of adding organic fertilizers (as opposed to inorganic fertilizers) to soils is that organic fertilizers

Use the following to answer questions: Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all. -This mineral is a constituent of both proteins and nucleic acids.

Soil scientists recognize _ major horizons: _.

Which three elements are most commonly added to agricultural soils in fertilizers?

If a new essential nutrient were discovered, it would be a

In almost all plants, roots get oxygen from

The maximum diameter of a clay particle is _______ $\mu$ m.

Chemical weathering, an important part of soil formation, includes the

Most earthworms can be found in

Quiz 36: Plant Nutrition

In many crops, nitrogen deficiencies cause _______ leaves to become _______.

Use the following to answer questions: Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all. -This mineral is necessary for water and ion balance.

Clay in soil

Which mineral is deficient in a plant whose growth is stunted and whose oldest leaves turn yellow and die prematurely?

Iron deficiencies cause _______ leaves to become _______.

Use the following to answer questions: Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all. -This micronutrient is necessary for chlorophyll synthesis.

The process of ion exchange is the means by which

Which of the following is not a consequence of adding lime to acidic soil?

The best topsoils are composed of

The ionization of carbonic acid

The advantage of adding organic fertilizers (as opposed to inorganic fertilizers) to soils is that organic fertilizers

Use the following to answer questions: Match the mineral nutrient in the list below with each description that follows. Each item may be used once, more than once, or not at all. -This mineral is a constituent of both proteins and nucleic acids.

Soil scientists recognize _______ major horizons: _______.

Which three elements are most commonly added to agricultural soils in fertilizers?

If a new essential nutrient were discovered, it would be a

In almost all plants, roots get oxygen from

The maximum diameter of a clay particle is _______ μ\muμ m.

Chemical weathering, an important part of soil formation, includes the

Most earthworms can be found in

In many crops, nitrogen deficiencies cause _ leaves to become _.

Iron deficiencies cause _ leaves to become _.

Soil scientists recognize _ major horizons: _.

The maximum diameter of a clay particle is _______ $\mu$ m.