NEET BIOLOGY

Detailed explanation-1: -Seeds need three things to germinate-air, water, and warmth.

Detailed explanation-2: -Unsurprisingly, warm-season crops, like tomatoes, zucchini, and basil, require more heat to germinate than cool-season crops like lettuce, spinach, and radishes.

Detailed explanation-3: -Warmth is needed to speed up the chemical reactions that take place in the seed. Warmth also speeds up the making of new cells when the plant embryo is growing. Therefore low soil temperatures for example, will slow down the rate of germination.

Detailed explanation-4: -Warm temperatures accelerate the chemical reactions in seeds and accelerate cell formation for development.

Detailed explanation-5: -Most seeds will germinate over quite a wide range of soil temperatures but the speed of germination will vary. Too cold and they’ll be very slow to sprout and too hot will also reduce the speed of germination. Far too cold or hot and they’ll just fail.