alleryStart learning →Which organelle has rough and smooth forms?
AEndoplasmic reticulum with attached or absent ribosomes
BGolgi apparatus with stacked cisternae throughout
CMitochondria with folded cristae inside the matrix
DNucleolus producing ribosomal RNA inside the nucleus
Answer & Solution
Correct answer: A. Endoplasmic reticulum with attached or absent ribosomes
1. The chapter section 2.7 names endoplasmic reticulum.
2. Rough ER bears ribosomes on its surface.
3. Smooth ER has no ribosomes attached.
4. Both forms transport materials, so the answer is ER.
_Source: Selina Concise Biology Class 9, Ch 2 Cell, the Unit of Life (Mistral OCR'd PDF), section 2.7 Endoplasmic Reticulum_
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