Q.What are the characteristics of Eukaryotic cells ? OR Describe the various steps of catalytic cycle of an Enzyme action.

A labelled plant-cell diagram must show the cell wall and large central vacuole/plastids that distinguish it from an animal cell, plus the organelles common to all eukaryotic cells.

Since this answer cannot include a hand-drawn image, here is the structure a correct, fully labelled diagram of a plant cell should show, part by part, from outside to inside:

1. Cell wall — the outermost, rigid layer made of cellulose, giving the cell its shape and support (absent in animal cells).
2. Plasma membrane — the selectively permeable membrane just inside the cell wall, enclosing the cytoplasm.
3. Cytoplasm — the semi-fluid matrix filling the cell, in which all organelles are suspended.
4. Nucleus — bounded by a double nuclear membrane (with nuclear pores), containing the nucleolus and chromatin material; usually pushed to one side by the large vacuole.
5. Vacuole — a large, single, central, membrane-bound (tonoplast) sac filled with cell sap, occupying most of the cell's volume — a hallmark feature distinguishing mature plant cells from animal cells.
6. Plastids — especially chloroplasts (green, containing chlorophyll and thylakoids, site of photosynthesis), also chromoplasts and leucoplasts in some cells.
7. Mitochondria — double-membraned, site of aerobic respiration/ATP synthesis. …

Plant cells differ from animal cells in having a rigid cellulose cell wall and (in most cases) plastids plus a large central vacuole — structures that animal cells lack.

While both plant and animal cells are eukaryotic and share many organelles (nucleus, mitochondria, ER, Golgi apparatus, ribosomes), there are clear structural differences:

1. Cell wall — plant cells are surrounded by a rigid, non-living cell wall made mainly of cellulose, lying external to the plasma membrane; this gives the cell a definite shape and mechanical support. Animal cells have NO cell wall at all — only the flexible plasma membrane bounds them. …