Sorry, I do not have enough questions to ask, could you just give me the answer,

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Sorry, I do not have enough questions to ask, could you just give me the answer,no need to explain, thx~

image JPG Reset Selection Question 7 of 10 Polar transport of auxin refers to A the fact that auxin is charged and therefore polar B the fact that auxin can bind to a hydrogen. O c the fact that auxin is transported only in one direction in the plant D the fact that auxin is only made in the tip of the coleoptile. Reset Select Question 8 of 10 A photosystem is O A.A camera made by Nikon e B a light harvesting antenna that funnels light energy to the reaction center c the chlorophyll molecule that receives light energy that excites electrons. O D the series of chloroplasts in the leaf Reset Selection Question 9 of 10 C4 plants separate initial CO2 fixation from the Calvin cycle in time. O True False Reset Selection Question 10 of 10 clay is an important component in the soil because its negative charge helps to retain certain plant nutrients O True O False Selectio Save Exit Submit for Grading

Explanation / Answer

Answer:

7). D. the fact that auxin is only made in the tip of the coleoptile

The auxins are synthesized in growing menistematic regions of plant from where they are transported to other plant parts. The transport of auxin in plant is predomi­nantly polar. In stems, polar transport of auxin is basipetal i.e., it takes place from apex towards base. In roots also, the auxin transport is polar but is primarily acropetal.

8). B). a light harvesting antenna that funnels light energy to the reaction center

A photosystem is an aggregate of protein structures in the thylakoid membranes of plants that aids in photosynthesis. It absorbs light energy and transfers electrons onto a reaction center. It consists of carotenoids, chlorophyll I and chlorophyll II molecules that together form an antennae complex. This complex harvests light energy from a broad range of the light spectrum and, through a series of resonance, transfer electrons down the various pigments up to the reaction center. The reaction center then utilizes the energy to activate a series of enzymes, which then perform the actual splitting of water molecules in photosynthesis.

9). False

C4 plants minimize photorespiration by separacting initial CO2 fixation and Calvin cycle in space, performing these steps in different cell types.

10). True

Clay particles and organic matter have negatively charged sites that hold positively charged ions on their surfaces

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