Yellow-indicates acid production from fermentation of the carbohydrate lower the pH below the neutral range
Answer: 3. gravitropism
The movement of plants in response to stimuli is called as tropism. Plants respond to different stimuli like light (phototropism), water present in the soil (hydrotropism), gravity (gravitropism) and touch (thigmotropism).
Gravitropism refers the growth and movement of plant parts with respect to the force of gravity exerted by earth. The roots shows positive gravitational tropism because they are growing towards earth gravity. The shoots or stems shows negative gravitational tropism because they are moving or growing against the gravity.
The correct answer choice is D. Production of ethanol
<span>Embryonic stem cells - Totipotent - can develop into any (all) type of tissue. Adult stem cells - Pleuripotent - can develop into many (not all) types of tissue. Skin cells - Non potent differentiated cells - can develop as skin tissue only. It is due to level of differentiation. Embryonic stem cells are undifferentiated. Adult stem cells are slightly differentiated. Skin cells are fully differentiated cells.</span>
