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Questions and Answers
Questions and Answers
Which zone of the root is defined by the presence of root hairs?
Which zone of the root is defined by the presence of root hairs?
- Zone of Pericycle
- Zone of Elongation
- Zone of Cell Division
- Zone of Maturation (correct)
Where do branch roots originate in a root system?
Where do branch roots originate in a root system?
- Zone of Maturation
- Zone of Cell Division
- Pericycle (correct)
- Zone of Elongation
What is the function of the endodermis in the root?
What is the function of the endodermis in the root?
- To produce root hairs
- To protect the root from pathogens
- To regulate water movement (correct)
- To store nutrients
How does water travel through the root?
How does water travel through the root?
What is the function of the pericycle in the root?
What is the function of the pericycle in the root?
What is the structural difference between the vascular cylinder of a dicot and a monocot?
What is the structural difference between the vascular cylinder of a dicot and a monocot?
Which part of the root is responsible for generating root pressure?
Which part of the root is responsible for generating root pressure?
What is the main function of the root cap?
What is the main function of the root cap?
What is the main function of taproots?
What is the main function of taproots?
Which cells in the root cap contain modified leucoplasts called statoliths?
Which cells in the root cap contain modified leucoplasts called statoliths?
Which type of roots arise out of non-root tissues such as stems or leaves?
Which type of roots arise out of non-root tissues such as stems or leaves?
What is the longitudinal structure of roots divided into?
What is the longitudinal structure of roots divided into?
Where does the Zone of Cell Division occur in the root?
Where does the Zone of Cell Division occur in the root?
What is the main function of the Zone of Elongation in the root?
What is the main function of the Zone of Elongation in the root?
Which type of roots penetrate the host roots and parasitize other plants?
Which type of roots penetrate the host roots and parasitize other plants?
What percentage of plant biomass do roots account for?
What percentage of plant biomass do roots account for?
What is the main function of root hairs?
What is the main function of root hairs?
What is the function of pneumatophores in plants?
What is the function of pneumatophores in plants?
What is the function of the root cap cells known as statocytes?
What is the function of the root cap cells known as statocytes?
What is the mechanism by which water is pumped to the rest of the plant?
What is the mechanism by which water is pumped to the rest of the plant?
Which layer of the root is responsible for the development of branch roots?
Which layer of the root is responsible for the development of branch roots?
What is the function of casparian strips in the endodermis?
What is the function of casparian strips in the endodermis?
Which type of roots have a large central storage root with many branch roots?
Which type of roots have a large central storage root with many branch roots?
What is the main function of fibrous roots?
What is the main function of fibrous roots?
Which type of roots allow the passage of oxygen into plant tissues in anoxic environments?
Which type of roots allow the passage of oxygen into plant tissues in anoxic environments?
What is the function of haustorial roots in plants?
What is the function of haustorial roots in plants?
Which type of roots absorb water from the air through a modified epidermis called 'velamen'?
Which type of roots absorb water from the air through a modified epidermis called 'velamen'?
What is the function of prop roots in plants?
What is the function of prop roots in plants?
What is the main function of cypress 'knees' in plants?
What is the main function of cypress 'knees' in plants?
Which type of roots arise out of non-root tissues such as stems or leaves?
Which type of roots arise out of non-root tissues such as stems or leaves?
Which part of the root is responsible for the downward growth of roots?
Which part of the root is responsible for the downward growth of roots?
What is the main function of the Zone of Cell Division in the root?
What is the main function of the Zone of Cell Division in the root?
What is the main function of the Zone of Elongation in the root?
What is the main function of the Zone of Elongation in the root?
What is the main function of root hairs?
What is the main function of root hairs?
What is the longitudinal structure of roots divided into?
What is the longitudinal structure of roots divided into?
What is the main function of the root cap?
What is the main function of the root cap?
Which cells in the root cap contain modified leucoplasts called statoliths?
Which cells in the root cap contain modified leucoplasts called statoliths?
What is the main function of the pericycle in the root?
What is the main function of the pericycle in the root?
What is the main function of taproots?
What is the main function of taproots?
What is the function of pneumatophores in plants?
What is the function of pneumatophores in plants?
Root hairs are found in the Zone of ______
Root hairs are found in the Zone of ______
Branch roots originate deep in the center of the root at a structure called the ________
Branch roots originate deep in the center of the root at a structure called the ________
Monocots have a vascular cylinder defined by a ring of ________ surrounding a central pith
Monocots have a vascular cylinder defined by a ring of ________ surrounding a central pith
The ______ is a meristematic layer responsible for the development of branch roots
The ______ is a meristematic layer responsible for the development of branch roots
Taproots are specialized for anchorage and nutrient storage and consist of a large central storage root with many ________ roots
Taproots are specialized for anchorage and nutrient storage and consist of a large central storage root with many ________ roots
What are the main structural differences between the root systems of dicots and monocots?
What are the main structural differences between the root systems of dicots and monocots?
Explain the function of pericycle in the root.
Explain the function of pericycle in the root.
Describe the different types of specialized roots mentioned in the text.
Describe the different types of specialized roots mentioned in the text.
Questions and Answers
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Study Notes
Study Notes
Root Structure and Function
- Root hairs are found in the Zone of Maturation.
- The presence of root hairs defines the Zone of Maturation.
- The root cap is responsible for generating root pressure and protecting the root tip.
Branch Roots
- Branch roots originate deep in the center of the root at a structure called the pericycle.
- The pericycle is a meristematic layer responsible for the development of branch roots.
Vascular Cylinder
- The vascular cylinder of a dicot is defined by a ring of vascular tissues surrounding a central pith.
- The vascular cylinder of a monocot is defined by a ring of sclerenchyma cells surrounding a central pith.
Root System Differences
- The main structural differences between the root systems of dicots and monocots are the number of vascular tissues and the arrangement of the vascular cylinder.
Specialized Roots
- Taproots are specialized for anchorage and nutrient storage and consist of a large central storage root with many branch roots.
- Fibrous roots are specialized for anchorage and consist of a network of many branching roots.
- Haustorial roots are specialized for parasitizing other plants and penetrating their host roots.
- Pneumatophores are specialized for allowing the passage of oxygen into plant tissues in anoxic environments.
- Prop roots are specialized for supporting the plant above ground and preventing it from falling over.
- Cypress 'knees' are specialized for allowing the passage of oxygen into plant tissues in anoxic environments.
Root Function
- The main function of root hairs is to increase the surface area for water absorption.
- The main function of the root cap is to protect the root tip and generate root pressure.
- The main function of the pericycle is to develop branch roots.
- The main function of taproots is for anchorage and nutrient storage.
Root Zones
- The Zone of Cell Division is responsible for the growth of new root cells.
- The Zone of Elongation is responsible for the elongation of new root cells.
- The Zone of Maturation is responsible for the differentiation of new root cells.
Root Cells
- Statocytes are specialized cells in the root cap that contain modified leucoplasts called statoliths.
- Statoliths are involved in the sensing of gravity.
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