1. (C) Kidney Cartilage is found in the joints of bones, nose, ear, trachea and larynx. It helps to smooth the surface at the joints. It gives support and provides flexibility to the body parts.

    (C) Kidney
    Cartilage is found in the joints of bones, nose, ear, trachea and larynx. It helps to smooth the surface at the joints. It gives support and provides flexibility to the body parts.

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  2. (D) Plasma membranes contain chitin sugar in plants. Each cell is surrounded by an extremely delicate, thin elastic living membrane called the plasma membrane. The plasma membrane is made up of two layers of lipid (fat) molecules with protein molecules sandwiched between the lipid layer.

    (D) Plasma membranes contain chitin sugar in plants.
    Each cell is surrounded by an extremely delicate, thin elastic living membrane called the plasma membrane. The plasma membrane is made up of two layers of lipid (fat) molecules with protein molecules sandwiched between the lipid layer.

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