What is the name of loosely packed cells which are present in the lower half of the leaf?

The loosely packed cells are called the spongy mesophyll layer so called because of the air spaces between them from which they sponge gases

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.

Bc they get tired from playing with other kittens