NEET BIOLOGY

Detailed explanation-1: -In plants and algae, which developed much later, photosynthesis occurs in a specialized intracellular organelle-the chloroplast. Chloroplasts perform photosynthesis during the daylight hours. The immediate products of photosynthesis, NADPH and ATP, are used by the photosynthetic cells to produce many organic molecules.

Detailed explanation-2: -The chloroplast is an organelle specific for eukaryotic oxygenic photosynthetic organisms, namely algae and land plants.

Detailed explanation-3: -Where are chloroplasts found? Chloroplasts are present in the cells of all green tissues of plants and algae. Chloroplasts are also found in photosynthetic tissues that do not appear green, such as the brown blades of giant kelp or the red leaves of certain plants.

Detailed explanation-4: -Discoid-shaped chloroplast is found in higher plants, whereas cup-shaped chloroplast is found in the green algae Chlamydomonas. Ulothrix has girdle-shaped chloroplasts and Chlorophyceae have reticulate chloroplasts.

Detailed explanation-5: -The chloroplast is involved in both stages of photosynthesis. The light reactions take place in the thylakoid. There, water (H2O) is oxidized, and oxygen (O2) is released. The electrons that freed from the water are transferred to ATP and NADPH.