Match the items in Column-I with those in Column-II: Column-I (a) Podocytes (b) Protonephridia (c) Nephridia (d) Renal calculi Column-II (i) Crystallised oxalates (ii) Annelids (iii) Amphioxus (iv) Filtration slits Select the correct option from the following
Answer: (C) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i). Answer: (C) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i).
- A.(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
- B.(a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
- C.(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)✓
- D.(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
Correct Answer
(C) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
Solution & Explanation
Answer: (C) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i). Solution: Podocytes are the epithelial cells of Bowman's capsule arranged to leave minute spaces called filtration slits, so podocytes match filtration slits (a-iv). Protonephridia (flame cells) are the excretory structures found in the cephalochordate Amphioxus (b-iii). Nephridia are the tubular excretory structures of earthworms and other annelids (c-ii). Renal calculi are stones of crystallised salts such as oxalates formed within the kidney (d-i). This gives a-iv, b-iii, c-ii, d-i. NCERT Reference: Ch 16, p.206, line(s) 6-11 — "Protonephridia or flame cells are the excretory structures in Platyhelminthes... and the cephalochordate – Amphioxus... Nephridia are the tubular excretory structures of earthworms and other annelids."