Question

Read the assertion and reason carefully to mark the correct option in question


Assertion: Eukaryotic cells have the ability to adopt a variety of shapes and carry out directed movements.

Reason: There are three principal types of protein filaments-microfilaments, microtubules and intermediate filaments, which constitute the cytoskeleton.

Answer 1

Elaboration:

Eukaryotic cells have the ability to adapt a variety of shapes and carry out directed movements due to the presence of cytoskeleton.

An elaborate network of filamentous, proteinaceous structures is called cytoskeleton. The major functions of cytoskeleton is to help in the movement of organelles within the cell, maintains the shape of the cell, provide mechanical support and helps in cell division. The cytoskeleton comprises of microtubules, intermediate filaments and microfilaments. Hence, assertion and reason are true, and the reason is the correct explanation to the assertion.

Final answer: (A) If both assertion and reason are true and the reason is the correct explanation of the assertion.