A gelatinous matrix inside the chloroplast containing ribosomes, DNA and enzymes is the:
a) Granum.
b) Chlorophyll.
c) Thylakoid.
d) Stroma.
e) Mitochondria.

• A. Granum
• B. Chlorophyll.
• C. Thylakoid.
• D. Stroma.
• E. Mitochondria.

Answer: (D)

Verified step by step guidance

1. Understand the structure of a chloroplast: Chloroplasts are organelles found in plant cells and are responsible for photosynthesis. They have several components, including the stroma, thylakoids, and grana.
2. Identify the function of each component: The stroma is the fluid-filled space surrounding the thylakoids in chloroplasts. It contains enzymes, ribosomes, and chloroplast DNA, which are essential for the synthesis of organic molecules.
3. Differentiate between the options: Granum is a stack of thylakoids, chlorophyll is a pigment, thylakoids are membrane-bound compartments, and mitochondria are organelles involved in energy production, not part of the chloroplast.
4. Focus on the description given: The problem describes a 'gelatinous matrix inside the chloroplast containing ribosomes, DNA, and enzymes.' This description matches the stroma, which is known for containing these components.
5. Conclude based on the information: Given the description and the functions of each component, the correct answer is 'd) Stroma,' as it fits the description of containing ribosomes, DNA, and enzymes within the chloroplast.