1. What is root pressure?
A.
The pressure developed in the root xylem due to the activity of root cells
B.
The pressure developed by leaves during photosynthesis
C.
The force that pulls water from leaves to roots
D.
The pressure of air surrounding the roots
Correct Answer:
The pressure developed in the root xylem due to the activity of root cells
Explanation:
Root pressure is the positive pressure developed in the xylem of roots by the activity of root cells.
2. Root pressure is mainly associated with which part of a plant?
A.
Root
B.
Flower
C.
Fruit
D.
Leaf margin
Correct Answer:
Root
Explanation:
Root pressure is generated in the roots, particularly in the root xylem.
3. In which tissue is root pressure developed?
A.
Xylem
B.
Phloem
C.
Epidermis of the leaf
D.
Cork
Correct Answer:
Xylem
Explanation:
Root pressure is the positive pressure that develops within the xylem of the root.
4. Root pressure is best described as a type of pressure that is:
A.
Positive
B.
Always negative
C.
Absent in roots
D.
Produced only in flowers
Correct Answer:
Positive
Explanation:
Root pressure is called positive pressure because it pushes water upward through the root xylem.
5. Root pressure develops because of the activity of:
A.
Root cells
B.
Petal cells
C.
Fruit cells only
D.
Seed coat cells only
Correct Answer:
Root cells
Explanation:
The definition of root pressure refers to pressure produced in the root xylem through the activity of root cells.
6. Which statement correctly defines root pressure?
A.
It is the pressure that pushes water into and through the root xylem
B.
It is the pressure that pushes sugars through the phloem
C.
It is the pressure that opens stomata
D.
It is the pressure produced by wind on leaves
Correct Answer:
It is the pressure that pushes water into and through the root xylem
Explanation:
Root pressure is the positive pressure in the root xylem that helps push water upward from the roots.
7. Root pressure is a pressure generated inside the:
A.
Root system
B.
Leaf surface
C.
Flower petals
D.
Fruit wall
Correct Answer:
Root system
Explanation:
Root pressure originates in the root system and is expressed in the root xylem.
8. Which of the following is a characteristic of root pressure?
A.
It is produced in roots and acts through the xylem
B.
It is produced in leaves and acts through the phloem
C.
It is produced in flowers and acts through stomata
D.
It is produced in fruits and acts through the epidermis
Correct Answer:
It is produced in roots and acts through the xylem
Explanation:
Root pressure is defined as pressure originating in roots and developing in the root xylem.
9. The term 'root pressure' refers to pressure generated by:
A.
The roots of a plant
B.
The wind around the stem
C.
The sunlight on the leaves
D.
The growth of flowers
Correct Answer:
The roots of a plant
Explanation:
The name root pressure indicates that this pressure is generated in the roots.
10. Root pressure helps create pressure in which conducting tissue of a plant?
A.
Xylem
B.
Phloem
C.
Cambium
D.
Epidermis
Correct Answer:
Xylem
Explanation:
Root pressure is the positive pressure created in the xylem, the tissue that conducts water from the roots.
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