Which is structural and functional unit of testis

Neurons are the structural and functional units of kidneys.

Write the structureal and functional difference between RNA and DNA.

The functional unit of liver is called:

Describe structure and functions of neuron. or Describe structure and functions of nervous tissue.

Discuss the structure and function of DNA.

Temperature of the scrotum which is necessary for the functioning of testis is always around "______" below body temperature.

How many types of permanent tissµes are there ? Discuss the structure and function of complex tissues.?

Assertion: Secondary succession always involves a predictable sequence of species and ends up with the same climax community as existed prior to the disturbance. Reason: A pond cannot be considered as a self sustained ecosystem as it does not possess all the structural and functional components which work as a unit in an ecosystem.

Which of the following aspects is not a component of functional unit of ecosystem?