Select the correct answer. A lichen is an organism that structurally appears to be a single organism. But a lichen is actually two different organisms—a fungus and green
algae-living together as one organism. The fungal partner derives its nutrition from the photosynthesizing algae. How does a lichen differ in its
photosynthetic activity from Elysia chlorotica, the sea slug that's considered to be a photosynthesizing animal?
CA In lichens, the fungi photosynthesize on their own, while Elysia chlorotica forms a relationship with a photosynthesizing plant.
B. In lichens, the relationship with the algae lasts throughout the life cycle, but in Elysia chlorotica, the relationship occurs only
during the immature juvenile stage of the slugs life cycle.
OC Lichens can photosynthesize only because of the living algal partner, while Elysia chlorotica incorporates chloroplasts from
algae into its cells.
D. In lichens, the association between the fungi and algae is permanent, while Elysia chlorotica associates with a
photosynthesizing organism only when it requires food.

The correct answer is option C. Lichens can photosynthesize only because of the living algal partner, while Elysia chlorotica incorporates chloroplasts from  algae into its cells.

Explanation:

Elysia chlorotica is an animal of the mollusk member that is known as the animal that can make its own food in unfavorable conditions. Elysia chlorotica search out plants and they eat them. They assuredly don't photosynthesize n its own.

They take the mechanism that permits plants to collect sunlight based vitality. The slugs take up these smaller than normal machines, called chloroplasts, into their skin, which turns them emerald green. While Lichens can photosynthesize only due to the living partner algae that can photosynthesize for both.

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

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the correct answer to this question is #5