1. The main raw materials absorbed by roots from the soil are:
a) Carbon dioxide and oxygen
b) Nitrogen, phosphorus, and other minerals
c) Water and sunlight
d) Sugars and amino acids
2. Which plant tissue is responsible for transporting water and minerals?
a) Phloem
b) Epidermis
c) Xylem
d) Cortex
3. The primary function of phloem in plants is to:
a) Transport water
b) Transport minerals
c) Transport products of photosynthesis
d) Provide structural support
4. In xylem tissue, water is transported through:
a) Sieve tubes
b) Vessels and tracheids
c) Companion cells
d) Root hairs
5. The process of loss of water in the form of vapor from aerial parts of the plant is called:
a) Translocation
b) Transpiration
c) Respiration
d) Photosynthesis
6. Assertion (A): Transpiration helps in the upward movement of water in plants.
Reason (R): Transpiration creates a suction force that pulls water from the roots to the leaves.
a) Both A and R are true, and R is the correct explanation of A.
b) Both A and R are true, but R is not the correct explanation of A.
c) A is true, but R is false.
d) A is false, but R is true.
7. Assertion (A): Root pressure is more important for water transport during the day.
Reason (R): During the day, transpiration pull becomes the major driving force for water movement.
a) Both A and R are true, and R is the correct explanation of A.
b) Both A and R are true, but R is not the correct explanation of A.
c) A is true, but R is false.
d) A is false, but R is true.
8. Fill in the blank: The transport of soluble products of photosynthesis is called ________.
a) Transpiration
b) Translocation
c) Osmosis
d) Diffusion
9. Which component of phloem helps in the translocation process?
a) Sieve tubes
b) Xylem vessels
c) Tracheids
d) Stomata
10. The movement of food and other substances in the phloem requires:
a) Sunlight
b) ATP energy
c) Root pressure
d) Transpiration pull
11. Match the following plant tissues with their functions:
|
A. Xylem |
1. Transport of water and minerals |
|
B. Phloem |
2. Transport of food |
|
C. Epidermis |
3. Protection and gas exchange |
|
D. Cortex |
4. Storage of food and water |
a) A-1, B-2, C-3, D-4
b) A-2, B-1, C-4, D-3
c) A-3, B-4, C-2, D-1
d) A-4, B-3, C-1, D-2
12. The upward movement of water in tall trees is primarily driven by:
a) Root pressure
b) Transpiration pull
c) Photosynthesis
d) Active transport
13. Fill in the blank: In the spring, ______ stored in root or stem tissue would be transported to the ------ which need energy to grow.
a) Plasma
b) Lymph
c) Xylem sap
d) Phloem sap
14. Transpiration helps in:
a) Photosynthesis
b) Temperature regulation
c) Respiration
d) Protein synthesis
15. During which part of the day does the transpiration pull become the major driving force for water movement in plants?
a) Early morning
b) Night
c) Noon
d) Evening
16. Assertion (A): Phloem transports food from the leaves to other parts of the plant.
Reason (R): Phloem cells use energy from ATP to transport food.
a) Both A and R are true, and R is the correct explanation of A.
b) Both A and R are true, but R is not the correct explanation of A.
c) A is true, but R is false.
d) A is false, but R is true.
17. Fill in the blank: Water moves into the root from the soil to eliminate the difference in ________ concentration.
a) Sugar
b) Mineral
c) Water
d) Nutrient
18. Which process helps in the absorption and upward movement of water in plants?
a) Translocation
b) Osmosis
c) Transpiration
d) Diffusion
19. Fill in the Blanks:
Plants have a low energy requirement due to their _____ and _____.
20. Fill in the blank: Translocation of food in plants occurs in the ________ direction(s).
a) Upward
b) Downward
c) Both upward and downward
d) Horizontal
Answer Key
1. b) Nitrogen, phosphorus, and other minerals
2. c) Xylem
3. c) Transport products of photosynthesis
4. b) Vessels and tracheids
5. b) Transpiration
6. a) Both A and R are true, and R is the correct explanation of A.
7. d) A is false, but R is true.
8. b) Translocation
9. a) Sieve tubes
10. b) ATP energy
11. a) A-1, B-2, C-3, D-4
12. b) Transpiration pull
13. Sugar, buds
14. b) Temperature regulation
15. c) Noon
16. a) Both A and R are true, and R is the correct explanation of A.
17. b) Mineral
18. c) Transpiration
19. Immobility, large proportion of dead cells
20. c) Both upward and downward
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