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The hereditary material in the nucleus is organised in

AGolgi vesicles that bud off from the stack
BSmooth endoplasmic reticulum sheets that fold
CMitochondrial cristae lining the inner membrane
DChromatin fibres that condense into chromosomes
Answer & Solution
Correct answer: D. Chromatin fibres that condense into chromosomes
1. The chapter says the nucleoplasm holds chromatin fibres. 2. During cell division chromatin condenses into chromosomes. 3. These carry hereditary information across generations. 4. So option A is correct. _Source: Selina Concise Biology Class 9, Ch 2 Cell, the Unit of Life (Mistral OCR'd PDF), section 2.7.3 Nucleus_
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