NEET 2002
- Exam
- NEET
- Year
- 2002
- Subject
- Zoology
- Chapter
- Human Reproduction
NEET 2002 · Zoology · Human Reproduction
What is true for cleavage?
What is true for cleavage?
Options
- ASize of embryo increases
- BSize of cells decreases
- CSize of cells increases
- DSize of embryo decreases
Correct answer
B. Size of cells decreases
Step-by-step solution
During cleavage, the zygote divides repeatedly to convert the large cytoplasmic mass into a large number of small blastomeres. It involvescell division without growth in size because cells continue to be retained within the zona pellucida. However, cell size decreases during cleavage.
Related Theory
Holoblastic cleavage is a complete cleavage meaning it completely penetrates the egg. Meroblastic cleavage is incomplete or partial cleavage meaning it does not penetrate the egg completely.