Q. What is the function of phloem in plants?
-
A.
Transport of water
-
B.
Transport of food
-
C.
Photosynthesis
-
D.
Storage of nutrients
Solution
Phloem is responsible for the transport of food, particularly the sugars produced during photosynthesis, from the leaves to other parts of the plant.
Correct Answer:
B
— Transport of food
Learn More →
Q. What is the main product of photosynthesis?
-
A.
Oxygen
-
B.
Glucose
-
C.
Carbon dioxide
-
D.
Water
Solution
The main product of photosynthesis is glucose, which serves as an energy source for the plant.
Correct Answer:
B
— Glucose
Learn More →
Q. What is the main product of the Calvin cycle in photosynthesis?
-
A.
Oxygen
-
B.
Glucose
-
C.
Carbon dioxide
-
D.
ATP
Solution
The Calvin cycle produces glucose as its main product, using carbon dioxide and energy from ATP and NADPH.
Correct Answer:
B
— Glucose
Learn More →
Q. What is the main purpose of the xylem in plants? (2020)
-
A.
Transport of food
-
B.
Transport of water
-
C.
Photosynthesis
-
D.
Storage of nutrients
Solution
Xylem is responsible for the transport of water and dissolved minerals from the roots to the rest of the plant.
Correct Answer:
B
— Transport of water
Learn More →
Q. What is the primary function of root hairs in plants?
-
A.
Photosynthesis
-
B.
Water absorption
-
C.
Nutrient storage
-
D.
Gas exchange
Solution
Root hairs increase the surface area of roots, enhancing the plant's ability to absorb water and nutrients from the soil.
Correct Answer:
B
— Water absorption
Learn More →
Q. What is the primary role of chloroplasts in plant cells?
-
A.
Energy production
-
B.
Photosynthesis
-
C.
Cell division
-
D.
Respiration
Solution
Chloroplasts are the organelles in plant cells where photosynthesis occurs, converting light energy into chemical energy.
Correct Answer:
B
— Photosynthesis
Learn More →
Q. What is the primary role of xylem in plants? (2022)
-
A.
Transport of nutrients
-
B.
Transport of water
-
C.
Photosynthesis
-
D.
Storage of food
Solution
Xylem is responsible for the transport of water and dissolved minerals from the roots to the rest of the plant.
Correct Answer:
B
— Transport of water
Learn More →
Q. What is the process by which plants lose water vapor called? (2019)
-
A.
Transpiration
-
B.
Evaporation
-
C.
Condensation
-
D.
Photosynthesis
Solution
Transpiration is the process where water vapor is lost from the plant, primarily through stomata in the leaves.
Correct Answer:
A
— Transpiration
Learn More →
Q. What is the process by which plants lose water vapor through small openings in their leaves called? (2019)
-
A.
Transpiration
-
B.
Evaporation
-
C.
Condensation
-
D.
Photosynthesis
Solution
Transpiration is the process of water vapor loss from plant leaves, which helps in nutrient transport and temperature regulation.
Correct Answer:
A
— Transpiration
Learn More →
Q. What is the process by which plants lose water vapor to the atmosphere?
-
A.
Transpiration
-
B.
Evaporation
-
C.
Condensation
-
D.
Precipitation
Solution
Transpiration is the process through which water vapor is lost from the plant to the atmosphere, primarily through stomata.
Correct Answer:
A
— Transpiration
Learn More →
Q. What is the role of auxins in plant growth?
-
A.
Promote flowering
-
B.
Stimulate root growth
-
C.
Inhibit growth
-
D.
Promote cell elongation
Solution
Auxins are plant hormones that promote cell elongation, which is crucial for growth and development in plants.
Correct Answer:
D
— Promote cell elongation
Learn More →
Q. What is the role of xylem in plants?
-
A.
Transport of nutrients
-
B.
Transport of water
-
C.
Photosynthesis
-
D.
Storage of food
Solution
Xylem is responsible for the transport of water and dissolved minerals from the roots to the rest of the plant.
Correct Answer:
B
— Transport of water
Learn More →
Q. What is the term for the movement of water through a plant?
-
A.
Translocation
-
B.
Transpiration
-
C.
Absorption
-
D.
Diffusion
Solution
Transpiration refers to the process of water movement through a plant and its evaporation from aerial parts, especially leaves.
Correct Answer:
B
— Transpiration
Learn More →
Q. Which gas is primarily absorbed by plants during photosynthesis?
-
A.
Oxygen
-
B.
Carbon dioxide
-
C.
Nitrogen
-
D.
Hydrogen
Solution
Plants absorb carbon dioxide from the atmosphere during photosynthesis, which is then used to produce glucose.
Correct Answer:
B
— Carbon dioxide
Learn More →
Q. Which gas is primarily taken in by plants during photosynthesis?
-
A.
Oxygen
-
B.
Carbon Dioxide
-
C.
Nitrogen
-
D.
Hydrogen
Solution
Plants primarily take in carbon dioxide during photosynthesis, which is used to produce glucose.
Correct Answer:
B
— Carbon Dioxide
Learn More →
Q. Which hormone is primarily responsible for plant growth? (2023)
-
A.
Ethylene
-
B.
Auxin
-
C.
Gibberellin
-
D.
Abscisic acid
Solution
Auxin is a plant hormone that promotes cell elongation and is crucial for growth.
Correct Answer:
B
— Auxin
Learn More →
Q. Which hormone is responsible for the ripening of fruits?
-
A.
Gibberellins
-
B.
Ethylene
-
C.
Cytokinins
-
D.
Auxins
Solution
Ethylene is a plant hormone that promotes the ripening of fruits and is involved in various aspects of plant growth and development.
Correct Answer:
B
— Ethylene
Learn More →
Q. Which nutrient is essential for the synthesis of chlorophyll?
-
A.
Nitrogen
-
B.
Phosphorus
-
C.
Potassium
-
D.
Calcium
Solution
Nitrogen is a key component of chlorophyll and is essential for its synthesis, thus playing a crucial role in photosynthesis.
Correct Answer:
A
— Nitrogen
Learn More →
Q. Which of the following is a factor affecting the rate of photosynthesis?
-
A.
Temperature
-
B.
Soil type
-
C.
Wind speed
-
D.
Humidity
Solution
Temperature is a key factor affecting the rate of photosynthesis, as it influences enzyme activity involved in the process.
Correct Answer:
A
— Temperature
Learn More →
Q. Which of the following is a product of photosynthesis? (2021)
-
A.
Carbon Dioxide
-
B.
Glucose
-
C.
Oxygen
-
D.
Both Glucose and Oxygen
Solution
Photosynthesis produces glucose and oxygen as products, using sunlight, carbon dioxide, and water.
Correct Answer:
D
— Both Glucose and Oxygen
Learn More →
Q. Which of the following is NOT a macronutrient for plants?
-
A.
Nitrogen
-
B.
Phosphorus
-
C.
Potassium
-
D.
Iron
Solution
Iron is considered a micronutrient, while nitrogen, phosphorus, and potassium are macronutrients essential for plant growth.
Correct Answer:
D
— Iron
Learn More →
Q. Which part of the plant is primarily responsible for nutrient absorption?
-
A.
Leaves
-
B.
Stems
-
C.
Roots
-
D.
Flowers
Solution
Roots are the primary organs for nutrient and water absorption from the soil, anchoring the plant and providing stability.
Correct Answer:
C
— Roots
Learn More →
Q. Which part of the plant is primarily responsible for the uptake of water and minerals? (2020)
-
A.
Leaves
-
B.
Stems
-
C.
Roots
-
D.
Flowers
Solution
Roots are specialized for absorbing water and nutrients from the soil, making them crucial for plant growth.
Correct Answer:
C
— Roots
Learn More →
Q. Which pigment is primarily responsible for photosynthesis in plants?
-
A.
Chlorophyll a
-
B.
Carotenoids
-
C.
Xanthophylls
-
D.
Anthocyanins
Solution
Chlorophyll a is the main pigment involved in photosynthesis, absorbing light energy to convert carbon dioxide and water into glucose and oxygen.
Correct Answer:
A
— Chlorophyll a
Learn More →
Q. Which pigment is primarily responsible for the absorption of light in photosynthesis?
-
A.
Chlorophyll a
-
B.
Carotenoids
-
C.
Xanthophylls
-
D.
Chlorophyll b
Solution
Chlorophyll a is the main pigment involved in photosynthesis, absorbing light primarily in the blue and red wavelengths.
Correct Answer:
A
— Chlorophyll a
Learn More →
Q. Which pigment is primarily responsible for the green color of plants?
-
A.
Carotenoids
-
B.
Chlorophyll
-
C.
Xanthophyll
-
D.
Anthocyanins
Solution
Chlorophyll is the pigment that gives plants their green color and is essential for photosynthesis, allowing plants to absorb light energy.
Correct Answer:
B
— Chlorophyll
Learn More →
Q. Which pigment is responsible for the red color in plants? (2021)
-
A.
Chlorophyll
-
B.
Carotenoids
-
C.
Anthocyanins
-
D.
Xanthophylls
Solution
Anthocyanins are pigments that give red, purple, and blue colors to many plants.
Correct Answer:
C
— Anthocyanins
Learn More →
Q. Which pigment is responsible for the red color in some plants? (2019)
-
A.
Chlorophyll
-
B.
Carotenoids
-
C.
Anthocyanins
-
D.
Xanthophylls
Solution
Anthocyanins are pigments that give red, purple, and blue colors to many plants, especially in fruits and flowers.
Correct Answer:
C
— Anthocyanins
Learn More →
Q. Which process describes the movement of water from the roots to the leaves of a plant?
-
A.
Translocation
-
B.
Transpiration
-
C.
Absorption
-
D.
Capillarity
Solution
Translocation refers to the movement of water and nutrients through the plant, specifically from the roots to the leaves.
Correct Answer:
A
— Translocation
Learn More →
Q. Which process describes the movement of water from the roots to the leaves?
-
A.
Translocation
-
B.
Transpiration
-
C.
Absorption
-
D.
Capillarity
Solution
Translocation refers to the movement of water and nutrients through the plant, specifically from the roots to the leaves.
Correct Answer:
A
— Translocation
Learn More →
Showing 1 to 30 of 33 (2 Pages)