What is the structure labeled as $A$ in the given figure made of?

Which of the following organelles are membrane-less?

Which of the following pairs regarding cell structure and its function is mismatched?

Choose the correct statements regarding cell organelles and their inclusions.
$A$. The endomembrane system includes Golgi complex, endoplasmic reticulum and mitochondria.
$B$. Rough endoplasmic reticulum bears ribosomes on its surface.
$C$. Both mitochondria and plastids have circular $DNA$.
$D$. $A$ network of microtubules, microfilaments and intermediate filaments present in the cytoplasm is called cytoskeleton.
$E$. Mitochondrion is a single membrane-bound structure.
Choose the correct answer from the options given below:

Match the following.

$A$. Microfilament	$i$. Cellulose
$B$. Microtubules	$ii$. Cytoskeleton
$C$. Intermediate filament	$iii$. In cilia and flagella
$D$. Cell wall	$iv$. Durable protein

Which group of organelles is not part of the endomembrane system?