Question

Given below are two statements:
Statement (I): Most typical tropical crops are short-day plants while those of higher latitudes are generally long-day plants.
Statement (II): The duration of night or complete darkness is more important than the length of the day.
In light of the above statements, choose the most appropriate answer from the options given below:

• A. Both Statement (I) and Statement (II) are correct.
• B. Both Statement (I) and Statement (II) are incorrect.
• C. Statement (I) is correct but Statement (II) is incorrect.
• D. Statement (I) is incorrect but Statement (II) is correct.

Hint:

Tropical = Short-day (long nights); Higher latitudes = Long-day (short nights). Night length drives flowering.

Answer 1

The Correct Option is A

Step 1: Interrupting the dark period (not the light period) blocks flowering in short-day plants.
Step 2: This shows night length, not day length, is what plants actually respond to, so Statement (II) is correct.
Step 3: Tropical crops face long, stable nights and are short-day plants, higher-latitude crops flower in short summer nights and are long-day plants.
Step 4: This matches Statement (I) as well.
\[ \boxed{\text{Option (1): Both statements are correct}} \]