Answer: plants either do not produce seeds, or the seed is not common to the plants
Explanation: when the seeds produced are not viable or are of long dormancy. The method relies on the use of pieces of vegetative plant parts such as stems, leaves, or roots to perpetuate the parent plants.
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Answer: <em>The main difference between light and dark reaction is that light reaction is the first stage of photosynthesis, </em>which traps light energy in order to produce ATP and NADPH whereas dark reaction is the second stage of photosynthesis, which produces glucose by using the energy form ATP and NADPH produced from the light
Answer: Option (a) is the correct answer.
Explanation:
Every orbit has a fixed value of energy which means that energy is quantised. When heat is absorbed by the atom then the electrons go from low energy level to high energy level.
Whereas when heat or energy is released by the atom then electrons move from high energy level to low energy level. As a result, this heat is released in the form of visible light.
Thus, we can conclude that the statement when an electron drops down from a high energy level to a lower one, light energy is emitted, is true according to the quantum model of the atom.
It is imply to cold in the North for tropical plants to grow. A tropical plant needs constant warmth, but the Northern United States has fluctuations between extreme cold and extreme heat.
The allele for black is B and the allele for white is B1. The heterozygous phenotype is known as erminette (black and white spotted). In shorthorncattle<span>, when a red </span>bull<span> (R R) is crossed with a white </span>cow<span> (R</span>1<span> R</span>1<span>), all the offspring are </span>roan<span>—a spotted, red and white or milky red color.</span>