Explain: Where is the Hatch-Slack pathway seen?

(N/A) The Hatch-Slack pathway,also known as the $C_{4}$ pathway,is observed in plants that are adapted to dry tropical regions.
These plants have $C_{4}$ oxaloacetic acid as the first $CO_{2}$ fixation product. They utilize the $C_{3}$ pathway or the Calvin cycle as the main biosynthetic pathway.
Internal characteristics of $C_{4}$ plant leaves:
$(1)$ $C_{4}$ plants possess a special type of leaf anatomy and can tolerate higher temperatures.
$(2)$ They show a positive response to high light intensities.
$(3)$ They lack a process called photorespiration.
$(4)$ They exhibit greater biomass productivity.
$(5)$ In a vertical section of the leaves,mesophyll cells are seen arranged in a specific pattern.
$(6)$ The particularly large cells around the vascular bundles of $C_{4}$ plants are called bundle sheath cells,and the leaves with such anatomy are said to have 'Kranz' anatomy.
$(7)$ Here,'Kranz' means 'wreath' and reflects the arrangement of cells.
$(8)$ The bundle sheath may consist of several layers around the vascular bundles.
$(9)$ These cells are characterized by having a large number of chloroplasts,thick walls impervious to gaseous exchange,and no intercellular spaces.
$(10)$ If we cut a section of the leaves of $C_{4}$ plants like maize or sorghum,we can observe the Kranz anatomy and the distribution of mesophyll cells.
Stages of the $C_{4}$ pathway:
Step $1$: Atmospheric $CO_{2}$ enters the mesophyll cells where the primary $CO_{2}$ acceptor is a $3-$carbon molecule,phosphoenolpyruvate $(PEP)$. The enzyme responsible for this $CO_{2}$ fixation is $PEP$ carboxylase $(PEPcase)$. The mesophyll cells lack $RuBisCO$. The $C_{4}$ acid $OAA$ is formed: $CO_{2} + PEP \xrightarrow{PEPcase} OAA$.
Step $2$: $OAA$ forms other $4-$carbon compounds like malic acid or aspartic acid in the mesophyll cells,which are transported to the bundle sheath cells. In the bundle sheath cells,these $C_{4}$ acids are broken down to release $CO_{2}$ and a $3-$carbon molecule (pyruvic acid).
Step $3$: The $3-$carbon molecule is transported back to the mesophyll where it is converted to $PEP$ again in the presence of $ATP$,thus completing the cycle.
Step $4$: The $CO_{2}$ released in the bundle sheath cells enters the $C_{3}$ or Calvin pathway. The bundle sheath cells are rich in the enzyme Ribulose bisphosphate carboxylase-oxygenase $(RuBisCO)$ but lack $PEPcase$.