Question:
On the basis of anthesis time of vegetable crops
(A) Tomato
(B) Muskmelon
(C) Summer Squash
(D) Ridge gourd
Choose the correct answer from the options according to ascending order of anthesis time:
On the basis of anthesis time of vegetable crops
(A) Tomato
(B) Muskmelon
(C) Summer Squash
(D) Ridge gourd
Choose the correct answer from the options according to ascending order of anthesis time:
(A) Tomato
(B) Muskmelon
(C) Summer Squash
(D) Ridge gourd
Choose the correct answer from the options according to ascending order of anthesis time:
Show Hint
To remember this sequence, group crops by pollination types: early morning open-pollinated cucurbits (squash/melon) open first, followed by self-pollinated solanaceous crops (tomato), while nocturnal-pollinated crops (ridge gourd) open last in the evening.
Updated On: Jul 23, 2026
- (B), (C), (D), (A).
- (A), (B), (C), (D).
- (B), (A), (D), (C).
- (C), (B), (A), (D).
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Anthesis is the period during which a flower is fully open and functional, allowing pollination to occur.
Different vegetable crops have adapted distinct times of day for anthesis to align with the activity patterns of their specific insect pollinators.
Step 2: Detailed Explanation:
Let us determine the typical time of day for anthesis for each crop:
1. Summer Squash (C): This crop has very early anthesis, with flowers opening in the early morning, typically between $4:00 \text{ AM}$ and $6:00 \text{ AM}$, before temperatures rise and bees become highly active.
2. Muskmelon (B): Anthesis occurs slightly later in the morning, typically between $6:00 \text{ AM}$ and $8:00 \text{ AM}$.
3. Tomato (A): Anthesis occurs during mid-to-late morning, typically between $7:30 \text{ AM}$ and $11:00 \text{ AM}$, when humidity decreases and wind or insects can easily shake the pollen loose.
4. Ridge gourd (D): Unlike many other cucurbits, ridge gourd (*Luffa acutangula*) is primarily pollinated by crepuscular or nocturnal insects (like moths).
Consequently, its flowers open in the late afternoon or evening, typically between $4:00 \text{ PM}$ and $8:00 \text{ PM}$.
Arranging these times in ascending order (earliest to latest in a 24-hour cycle) gives:
Summer Squash (C) $\rightarrow$ Muskmelon (B) $\rightarrow$ Tomato (A) $\rightarrow$ Ridge gourd (D).
This corresponds to the sequence: (C), (B), (A), (D).
Step 3: Final Answer:
The correct ascending sequence is (C), (B), (A), (D), corresponding to option (D).
Anthesis is the period during which a flower is fully open and functional, allowing pollination to occur.
Different vegetable crops have adapted distinct times of day for anthesis to align with the activity patterns of their specific insect pollinators.
Step 2: Detailed Explanation:
Let us determine the typical time of day for anthesis for each crop:
1. Summer Squash (C): This crop has very early anthesis, with flowers opening in the early morning, typically between $4:00 \text{ AM}$ and $6:00 \text{ AM}$, before temperatures rise and bees become highly active.
2. Muskmelon (B): Anthesis occurs slightly later in the morning, typically between $6:00 \text{ AM}$ and $8:00 \text{ AM}$.
3. Tomato (A): Anthesis occurs during mid-to-late morning, typically between $7:30 \text{ AM}$ and $11:00 \text{ AM}$, when humidity decreases and wind or insects can easily shake the pollen loose.
4. Ridge gourd (D): Unlike many other cucurbits, ridge gourd (*Luffa acutangula*) is primarily pollinated by crepuscular or nocturnal insects (like moths).
Consequently, its flowers open in the late afternoon or evening, typically between $4:00 \text{ PM}$ and $8:00 \text{ PM}$.
Arranging these times in ascending order (earliest to latest in a 24-hour cycle) gives:
Summer Squash (C) $\rightarrow$ Muskmelon (B) $\rightarrow$ Tomato (A) $\rightarrow$ Ridge gourd (D).
This corresponds to the sequence: (C), (B), (A), (D).
Step 3: Final Answer:
The correct ascending sequence is (C), (B), (A), (D), corresponding to option (D).
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