The correct answer is c. homologous structures.
Homologous structures are those which are similar in origin but dissimilar in function. The organs are made of the same bone pattern and structure. Origin of hooves in both horse and mountain goat have same structure but performing different functions as they live in different habitats. The homologous structures represent divergent evolution. Thus, we look at at different structures of organisms to compare similarity.
Chromatid means each of the two threadlike strands into which a chrosome divides longitudinally during cell division. Each contains a double helix of DNA
Answer:
a. movement can occur both upward and downward in the plant
Explanation:
The phloem loading causes the accumulation of sugars in the sieved elements generating a negative solute potential (quedas), with a drop in water potential (ψw), so water enters the sieved elements increasing the turgor pressure (ψp). With the discharge of phloem in the drain occurs lower concentration of sugars in the screened elements, increases the solute potential, becoming positive, thus the phloem water potential increases and thus the water leaves the conducting vessel. In the specific case of sugar movement in the phloem, it can be stated that this movement can occur both up and down in the plant.
Light dependent reactions require an actual source of light, and this is from the sun, for energy to carry out the first stage of photosynthesis. They need solar energy to split a water molecule in order to obtain electrons from hydrogen to be used in fueling photosynthesis.
Light independent reactions do not require a light source for energy but rather they use energy that was created by the light dependent reactions to complete the process of photosynthesis in which different carbohydrates for the plant are made.
