What are the raw materials required for photosynthesis to occur? Write the balanced chemical equation for the process.

A student is observing the temporary mount of a leaf peel under a microscope. Draw a labelled diagram of the structure of stomata as seen under the microscope.

What are the differences between autotrophic nutrition and heterotrophic nutrition?

$(i)$ Which simple food is prepared first in the process of photosynthesis?
(ii) Name the food which gets stored in plants.

Name the following with reference to the alimentary canal:
$(a)$ $(i)$ The largest gland.
$(ii)$ The gland that secretes digestive enzymes as well as hormones.
$(iii)$ The part where digested food is absorbed.
$(b)$ What are villi? Mention their function.

Name two proteases present in pancreatic juice and describe their specific roles.