Question

Chromosomes:
(i) carry hereditary information from parents to the next generation.
(ii) are thread like structures located inside the nucleus of an animal cell.
(iii) always exist in pairs in human reproductive cells.
(iv) are involved in the process of cell division.
The correct statements are:

• A. (i) and (ii)
• B. (iii) and (iv)
• C. (i), (ii) and (iv)
• D. (i) and (iv)

Answer 1

The Correct Option is C

Step 1: Chromosome Function:
Chromosomes, composed of DNA, are thread-like structures that transmit genetic information across generations. They reside within the nucleus of eukaryotic cells and are vital for inheritance and cell division.

Step 2: Statement Analysis:
(i) Hereditary Information Transmission:
Correct. Genes within chromosomes transfer genetic information from parents to offspring during reproduction.

(ii) Structure and Location in Animal Cells:
Correct. Chromosomes are thread-like structures found in the nucleus of both plant and animal cells, observable during cell division.

(iii) Pairing in Human Reproductive Cells:
Incorrect. Human reproductive cells (gametes) are haploid (single set), unlike diploid somatic cells which have paired chromosomes.

(iv) Involvement in Cell Division:
Correct. Chromosomes are critical for accurate genetic material distribution in mitosis and meiosis.

Conclusion:
Statements (i), (ii), and (iv) are accurate. The correct answer is (i), (ii) and (iv).