Which statement best distinguishes the light-dependent (l-d) reactions from the light-independent (l-ind) reactions? the l-d reactions occur in the thylakoid membrane, and the l-ind reactions occur in the stroma. the l-d reactions occur in the cytoplasm, and the l-ind reactions occur in the chloroplast. the l-d reactions occur in the chloroplast, and the l-ind reactions occur in the mitochondria. the l-d reactions occur in the stroma, and the l-ind reactions occur in the cytoplasm.

The correct answer is option 'The L-D reactions occur in the thylakoid membrane, and the L-IND reactions occur in the stroma'.

The light dependent reaction (LD) occurs in the thalakoid of the chloroplasts. It uses the light energy to carry out the reactions required for the formation of ATP and NADPH molecules.

The light independent reaction of the photosynthesis occurs in the stroma (outside thalakoid) and is responsible for the formation of the glucose molecules from the carbon dioxide. This step does not require presence of light.

the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.

humans, along with other animals and plants, have linear chromosomes that are arranged in pairs within the nucleus of the cell. the only human cells that do not contain pairs of chromosomes are reproductive cells, or gametes, which carry just one copy of each chromosome.