Which of these pair of substances must be present for a seed to germinate in a laboratory set-up?
- microbes and water
-
heat and water
- soil and manure
- heat and microbe
The correct answer is: B
Explanation
All seeds need water, oxygen, and proper temperature in order to germinate. Experiment has shown that germinating seeds produce heat.
The correct answer is B - Heat and water.
For a seed to germinate in a laboratory setup, two essential factors are required:
1. Water: Seeds need water to rehydrate and initiate metabolic processes.
2. Heat (or optimal temperature): Seeds require a specific temperature range to break dormancy and germinate.
The other options are not essential for seed germination:
A. Microbes: While microbes can influence seed germination, they are not a required factor.
C. Soil and manure: Seeds can germinate in a laboratory setup without soil and manure.
D. Heat and microbe: Microbes are not a necessary factor for seed germination.
There is an explanation video available .