Question:
Which of the following are cool season turf grasses?
(A) Cynodon dactylon
(B) Agrostis palustris
(C) Paspalum notatum
(D) Lolium perene
Choose the correct answer from the options given below:
Which of the following are cool season turf grasses?
(A) Cynodon dactylon
(B) Agrostis palustris
(C) Paspalum notatum
(D) Lolium perene
Choose the correct answer from the options given below:
(A) Cynodon dactylon
(B) Agrostis palustris
(C) Paspalum notatum
(D) Lolium perene
Choose the correct answer from the options given below:
Show Hint
Remember:
- Cool-season grasses ($\text{C}_3$) grow best between $15^{\circ}\text{C}$ and $24^{\circ}\text{C}$ (e.g., Bentgrass, Ryegrass, Bluegrass, Fescue).
- Warm-season grasses ($\text{C}_4$) thrive between $27^{\circ}\text{C}$ and $35^{\circ}\text{C}$ (e.g., Bermuda grass, Bahia grass, Zoysia grass).
- Cool-season grasses ($\text{C}_3$) grow best between $15^{\circ}\text{C}$ and $24^{\circ}\text{C}$ (e.g., Bentgrass, Ryegrass, Bluegrass, Fescue).
- Warm-season grasses ($\text{C}_4$) thrive between $27^{\circ}\text{C}$ and $35^{\circ}\text{C}$ (e.g., Bermuda grass, Bahia grass, Zoysia grass).
Updated On: Jul 23, 2026
- (A) and (B) only.
- (A) and (C) only.
- (B) and (D) only.
- (C) and (D) only.
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Turfgrasses are classified into warm-season and cool-season grasses based on their optimal growth temperatures, photosynthetic pathways ($\text{C}_3$ vs. $\text{C}_4$), and climate adaptability.
Step 2: Detailed Explanation:
Let us analyze each of the listed grasses:
(A) Cynodon dactylon (Bermuda grass):
This is a standard, highly popular warm-season grass ($\text{C}_4$).
It grows best in warm-to-hot climates and enters dormancy (turning brown) during cold winter months.
Thus, (A) is a warm-season grass.
(B) Agrostis palustris (Creeping bentgrass):
This is a premier cool-season turfgrass ($\text{C}_3$).
It thrives in cool, moist climates and is highly valued for putting greens on golf courses because it can tolerate very low mowing heights.
Thus, (B) is a cool-season grass.
(C) Paspalum notatum (Bahia grass):
This is a coarse-textured warm-season grass ($\text{C}_4$) native to tropical and subtropical regions.
It is highly tolerant of heat and drought.
Thus, (C) is a warm-season grass.
(D) Lolium perenne (Perennial ryegrass):
This is a widely used cool-season turfgrass ($\text{C}_3$) valued for its rapid germination, lush green color, and excellent wear tolerance in cool climates.
Thus, (D) is a cool-season grass.
Step 3: Final Answer:
Agrostis palustris (B) and Lolium perenne (D) are cool-season turfgrasses.
This corresponds to Option (C).
Turfgrasses are classified into warm-season and cool-season grasses based on their optimal growth temperatures, photosynthetic pathways ($\text{C}_3$ vs. $\text{C}_4$), and climate adaptability.
Step 2: Detailed Explanation:
Let us analyze each of the listed grasses:
(A) Cynodon dactylon (Bermuda grass):
This is a standard, highly popular warm-season grass ($\text{C}_4$).
It grows best in warm-to-hot climates and enters dormancy (turning brown) during cold winter months.
Thus, (A) is a warm-season grass.
(B) Agrostis palustris (Creeping bentgrass):
This is a premier cool-season turfgrass ($\text{C}_3$).
It thrives in cool, moist climates and is highly valued for putting greens on golf courses because it can tolerate very low mowing heights.
Thus, (B) is a cool-season grass.
(C) Paspalum notatum (Bahia grass):
This is a coarse-textured warm-season grass ($\text{C}_4$) native to tropical and subtropical regions.
It is highly tolerant of heat and drought.
Thus, (C) is a warm-season grass.
(D) Lolium perenne (Perennial ryegrass):
This is a widely used cool-season turfgrass ($\text{C}_3$) valued for its rapid germination, lush green color, and excellent wear tolerance in cool climates.
Thus, (D) is a cool-season grass.
Step 3: Final Answer:
Agrostis palustris (B) and Lolium perenne (D) are cool-season turfgrasses.
This corresponds to Option (C).
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