AP BIOLOGY

Detailed explanation-1: -The palisade mesophyll layer is made up of closely-packed, elongated cells located just below the upper epidermis. They contain chloroplasts and carry out most of the photosynthesis.

Detailed explanation-2: -Chloroplasts are specialized organelles that are only found in plant cells. Chloroplasts contain thylakoids. Thylakoids are the specific structures responsible for photosynthesis. Some thylakoids float freely in the fluid that fills the chloroplast.

Detailed explanation-3: -The palisade mesophyll layer is where most of the photosynthesis occurs in the leaf. The palisade cells contain a lot of chloroplasts to help them perform this photosynthesis. The palisade cells are closely packed together to maximize light absorption.

Detailed explanation-4: -Palisade cells contain the largest number of chloroplasts per cell, which makes them the primary site of photosynthesis in the leaves of those plants that contain them, maximizing the production of energy, converting the energy in light to the chemical energy of carbohydrates.

Detailed explanation-5: -Mesophylls are the internal ground tissue present in leaves. There are two types of mesophyll cells in the leaves namely palisade mesophyll and spongy mesophyll. Mesophyll cells are provided with a large number of chloroplast. Photosynthesis occurs in the chloroplast.