Question

Identify the correct statement(s) about 'speed breeding':
A. It is targeted to reduce the breeding cycle of a crop
B. It manipulates photoperiod and temperature to enhance crop maturity
C. It is done in open field condition
D. It was initially used to grow crops in the 'space station'
E. It increases both vegetative and reproductive phases of the plants
Choose the correct answer from the options given below:

• A. A, B, C only
• B. B, C, D only
• C. C, D, E only
• D. A, B, D only

Hint:

Speed breeding:
- Reduces breeding cycle.
- Uses controlled environment (photoperiod and temperature).
- Developed for space station.
- Accelerates generation turnover.

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
This question tests knowledge of 'speed breeding' technology.

Step 2: Detailed Explanation:
Speed breeding is a technique used to accelerate plant breeding cycles.
A. It is targeted to reduce the breeding cycle of a crop: Correct.
Speed breeding reduces the generation time.
B. It manipulates photoperiod and temperature to enhance crop maturity: Correct.
It uses controlled environments with extended photoperiods (22 hours light) and optimal temperatures.
C. It is done in open field condition: Incorrect.
Speed breeding is done in controlled environments (greenhouses, growth chambers).
D. It was initially used to grow crops in the 'space station': Correct.
It was developed for the "space station" to grow plants quickly.
E. It increases both vegetative and reproductive phases of the plants: Incorrect.
It reduces the growth cycle, not increases it.
Thus, A, B, and D are correct.

Step 3: Final Answer:
Thus, the correct answer is A, B, D only, which corresponds to option (D).
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