Identify figures-$I$ and $II$.

The spleen and lymph nodes are composed of which type of tissue?

Describe the structure and function of areolar connective tissue.

Identify the given connective tissues in the figure.

Read the following statements and answer the question.
$(i)$ They have a hard and non-pliable ground substance rich in calcium salts and collagen fibres.
$(ii)$ They support and protect softer tissues and organs.
$(iii)$ Osteocytes are present in the spaces called lacunae.
$(iv)$ They also interact with skeletal muscles attached to them to bring about movements.
Which of the following type of tissue is being described by above statements?

Where is cartilage located in the human body?