The fluid content inside the plasma membrane is called cytoplasm. It also contains specialised cell organelles.

Leucoplast is a colourless plastid which stores proteins, lipids and starch, while xanthophylls are yellow, red, orange pigment of green plants.

Animal tissues are categorised into four basic types on the basis of their structure and functions. The four basic types of tissues are epithelial connective, muscular and nervous tissue.

A mixture which has uniform composition throughout, i.e., without any clear boundary of separation is known as homogeneous mixture.

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