Simple coiled tubular glands are found in

Junction which facilitates the exchange of small and sometimes big molecules is $:-$

Match the following:

Column-$I$	Column-$II$
$(a)$. Squamous epithelium	$(i)$ Lining of intestine
$(b)$. Cuboidal epithelium	$(ii)$ Ovary
$(c)$. Columnar epithelium	$(iii)$ Blood vessels
$(d)$. Ciliated epithelium	$(iv)$ Bronchioles

Which of the following types of cell junctions is not found in animal tissues?

This epithelium is made of a single thin layer of flattened cells and is involved in functions like forming a diffusion boundary. It is found in:

Inner lining of gut,stomach and liver is composed of