Nutrition in Plants

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What happens to a seedling if it lacks an essential nutrient during growth?

It grows rapidly

It grows normally

It shows abnormal symptoms (correct)

It remains unchanged

What is the composition of soil affected by?

Temperature

Moisture conditions (correct)

Plant growth

Soil volume

What is the main function of microorganisms in soil?

To produce nutrients

To produce heat

To absorb water

To break down and recycle organic debris (correct)

What is the topmost layer of soil called?

Topsoil Signup and view all the answers

What is humus composed of?

Partly decayed organic material Signup and view all the answers

What occupies about half of the total soil volume?

Spaces or pores Signup and view all the answers

What is the major difference between plants and animals?

Plants have the capacity to synthesize their organic nutrients. Signup and view all the answers

What is the function of inorganic raw materials in plants?

They are used to synthesize complex organic substances. Signup and view all the answers

What happens to a plant when it lacks an important nutrient?

The plant becomes more susceptible to disease or death. Signup and view all the answers

What is the approximate percentage of C, O, and H in plant nutrients?

About 94% Signup and view all the answers

What is the term for organisms that can synthesize their own nutrients?

Autotrophs Signup and view all the answers

What is the primary source of nitrogen for plant nutrition?

Source of N Signup and view all the answers

What is the main difference between topsoil and subsoil?

Subsoil has more organic matter and smaller mineral particles Signup and view all the answers

What is the primary mechanism by which water and dissolved minerals are transported upward in the xylem?

Capillary action and root pressure Signup and view all the answers

What is the result of the higher concentration of dissolved materials in the cytoplasm of the root cells compared to the water in the soil?

Water diffuses into the cells by osmosis Signup and view all the answers

What is the factor that determines how high the water rises in a tube due to capillary action?

The diameter of the tube Signup and view all the answers

What is the term for the upward movement of a liquid in a tube of narrow diameter?

Capillary action Signup and view all the answers

When is root pressure often higher in plants?

At night when transpiration is low or nil Signup and view all the answers

What is the primary function of the phloem in plants?

To transport carbohydrates and other organic materials to roots and growing regions Signup and view all the answers

What is the direction of movement in phloem?

Either upward or downward Signup and view all the answers

What drives the movement of substances in phloem according to the pressure flow theory?

Differences in osmotic pressure Signup and view all the answers

What is the energy requirement for transport of substances through sieve tubes?

No energy required Signup and view all the answers

What is the term for the distribution of carbohydrates and other organic materials to various parts of the plant?

Translocation Signup and view all the answers

What is the term for the movement of water into a region of high concentration of dissolved substances?

Osmosis Signup and view all the answers

Where do insect-eating carnivorous plants most commonly grow?

In bogs or marshes Signup and view all the answers

Why do carnivorous plants obtain nutrients from insects?

Because the soil lacks essential nutrients Signup and view all the answers

What is the purpose of the downward pointing hairlike structures in pitcher plants?

To prevent the prey from escaping Signup and view all the answers

What is unique about the leaves of Venus's flytrap?

They have hinged leaves with trigger hairs Signup and view all the answers

What is the role of enzymes in carnivorous plants?

To break down insect tissues Signup and view all the answers

How do carnivorous plants obtain nitrogen-containing compounds?

From insects Signup and view all the answers

Nutrition in Plants

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Questions and Answers

What happens to a seedling if it lacks an essential nutrient during growth?

What is the composition of soil affected by?

What is the main function of microorganisms in soil?

What is the topmost layer of soil called?

What is humus composed of?

What occupies about half of the total soil volume?

What is the major difference between plants and animals?

What is the function of inorganic raw materials in plants?

What happens to a plant when it lacks an important nutrient?

What is the approximate percentage of C, O, and H in plant nutrients?

What is the term for organisms that can synthesize their own nutrients?

What is the primary source of nitrogen for plant nutrition?

What is the main difference between topsoil and subsoil?

What is the primary mechanism by which water and dissolved minerals are transported upward in the xylem?

What is the result of the higher concentration of dissolved materials in the cytoplasm of the root cells compared to the water in the soil?

What is the factor that determines how high the water rises in a tube due to capillary action?

What is the term for the upward movement of a liquid in a tube of narrow diameter?

When is root pressure often higher in plants?

What is the primary function of the phloem in plants?

What is the direction of movement in phloem?

What drives the movement of substances in phloem according to the pressure flow theory?

What is the energy requirement for transport of substances through sieve tubes?

What is the term for the distribution of carbohydrates and other organic materials to various parts of the plant?

What is the term for the movement of water into a region of high concentration of dissolved substances?

Where do insect-eating carnivorous plants most commonly grow?

Why do carnivorous plants obtain nutrients from insects?

What is the purpose of the downward pointing hairlike structures in pitcher plants?

What is unique about the leaves of Venus's flytrap?

What is the role of enzymes in carnivorous plants?

How do carnivorous plants obtain nitrogen-containing compounds?

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