Chromosomal DNA guanine hereditary
DNA
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Answer:</h2>
Option B.
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Explanation:</h2>
- <u>Phototropism</u> is the process in which plant grow in response to light. Where "Photo'' means light and ''Tropisms'' are responses to external stimuli in this case stimuli against light.
Now, going back to the question
- Plant cells grows faster in the presence of the hormone auxin.
- As a result when a plant senses a light from a direction, auxin molecules accumulates to the side that is further away from the light, due to which the plant cells that are further away from the light experience a greater auxin concentration and grow faster, due to which shoot gets bend towards the direction of the applied light.
- <u>Gravitropism</u> is a process of growth by a plant in response to gravity pulling on it. Roots show positive gravitropism i.e they will grow with the gravitational pull and stems show negative gravitropism that is they will grow against gravitational pull.
- Auxin is a plant hormone which promotes stem elongation and inhibits the growth of lateral buds.
- Auxin helps in maintaining apical dominance, which means in presence of auxin the plant will grow Vertically upward i.e against the gravity. Hence Auxin promotes gravitropism.
Result: Phototropism and Gravitropism is controlled by Hormones
Carbohydrates contain carbon, hydrogen, and oxygen in the molar ratio 1:2:1. The empirical formula for carbohydrates is CH20. The monomers of carbohydrates of are sugars.
They all belong to more than one food chain except the frog. The insect is the prey for many food chains, and the snake is widely at the top...
Because the metals have lost electrons to oxygen, they have been oxidized; oxidation is therefore the loss of electrons. Conversely, because the oxygen atoms have gained electrons, they have been reduced, so reduction is the gain of electrons. ... Any oxidation must ALWAYS be accompanied by a reduction and vice versa.