Arrange the following cell layers/structures around the female gamete, from outer to inner side:
A. Zona pellucida
B. Perivitelline space
C. Corona radiata
D. Plasma membrane of ovum
Choose the correct answer from the options given below:
A.C, A, D, B
B.C, A, B, D
C.D, B, A, C
D.A, C, B, D
Solution & Explanation
Related Formula
Outer to Inner Layers of Ovum: Corona radiata arrow Zona pellucida arrow Perivitelline space arrow Plasma membrane$$\text{Outer to Inner Layers of Ovum:} \quad \text{Corona radiata} \rightarrow \text{Zona pellucida} \rightarrow \text{Perivitelline space} \rightarrow \text{Plasma membrane}$$
Core Logic
The structural arrangement around the human ovum from the outermost layer to the innermost side is:
Corona radiata (outer follicle cell layer) (C)
Zona pellucida (non-cellular acellular glycoprotein layer) (A)
Perivitelline space (space between zona pellucida and plasma membrane) (B)
Plasma membrane of ovum (D)
Step 1: Diagrammatic Representation
Structure of Ovum and surrounding envelopes diagram for Q161 - NEET 2024 Code 12
The correct sequence is C arrow$\rightarrow$ A arrow$\rightarrow$ B arrow$\rightarrow$ D.
Pattern Recognition
Sees: "ovum layers outer to inner".
Shortcut: Corona radiata arrow$\rightarrow$ Zona pellucida arrow$\rightarrow$ Perivitelline space arrow$\rightarrow$ Plasma membrane.
Spermatogonia undergo a series of cell divisions to produce sperms. Select the correct statements from the following:
A. Spermatogonia always undergo meiotic cell division.
B. Primary spermatocytes divide mitotically to produce secondary spermatocytes.
C. Secondary spermatocytes, through their second meiotic division, produce haploid spermatids.
D. Spermatids produce spermatozoa through mitosis.
E. Spermatids transform into spermatozoa by spermiogenesis.
Choose the correct answer from the options given below:
Practice past-year questions one chapter at a time. Pick an exam → subject → chapter and get every PYQ for that topic — pulled together from all past papers — with the chapter's key formulas alongside.
