Question

Categorise the following functions respectively associated with the given cell organelles P and Q.
(i) Works as a seat of protein synthesis.
(ii) Helps in secretion of mucus, enzymes and hormones.
(iii) Helps in storage of secretory products.
(iv) Helps in development of acrosome of sperm.
(v) Helps in membrane biogenesis.
(vi) Forms a continuous transport channel with nuclear membrane.

• A. P-(i), (ii), (v); Q-(iii), (iv), (vi)
• B. P-(iii), (iv); Q-(i), (ii), (vi), (v)
• C. P-(ii), (iii), (iv); Q-(i), (v), (vi)
• D. P-(i), (ii), (iii), (iv); Q-(v), (vi)

Answer 1

The correct option is B P-(iii), (iv); Q-(i), (ii), (vi), (v)

The image marked as P is Golgi apparatus and Q is endoplasmic reticulum. The acrosome is an organelle that develops over the anterior half of the head in the spermatozoa (sperm cells) of animals. It is a cap-like structure derived from the Golgi apparatus. Golgi apparatus has an important role in the storage, packaging and secretion of certain cell products. Pectin and other mucilaginous substances of the plant cell wall are synthesized in the Golgi and are packaged in vesicles for secretion. The endoplasmic reticulum (ER) is a type of organelle in the cells of eukaryotic organisms that forms an interconnected network of flattened, membrane-enclosed sacs or tubes known as cisternae. The membranes of the ER are continuous with the outer membrane of the nuclear envelope. The outer (cytosolic) face of the rough endoplasmic reticulum is studded with ribosomes that are the sites of protein synthesis. Smooth ER acts as a storage organelle. It is important in the creation and storage of lipids and steroids.