Topics:
Animal Refresher, Animal Reproduction
Types of Placenta – Correct Matching
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Question (English)
Which of the following pair(s) regarding types of placenta is/are correctly matched?
- Cotyledonary placenta – ruminants only
- Zonary placenta – carnivores only
- Diffused placenta – mare, sow & she-camel only
- All the above (Cotyledonary-ruminants, Zonary-carnivores, Diffused-mare/sow/she-camel) ✓ Correct
Explanation:
Correct Answer: All the above
All three pairs are correctly matched:
- Cotyledonary placenta → Ruminants (cattle, buffalo, sheep, goat): The placentomes (cotyledon + caruncle unit) are scattered over the chorion. Cattle have ~70–120 placentomes.
- Zonary placenta → Carnivores (bitch, cat): The placenta forms a band/girdle (zone) around the middle of the chorion.
- Diffused placenta → Mare, sow & she-camel: Chorionic villi are distributed all over the entire surface of the chorion (diffuse attachment).
Complete Placenta Classification Table
| Shape | Histology | Species |
|---|---|---|
| Diffuse | Epitheliochorial | Mare, Sow, Camel |
| Cotyledonary | Syndesmochorial (sheep/goat) / Epitheliochorial (cattle/buffalo) | Ruminants |
| Zonary | Endotheliochorial | Bitch, Cat |
| Discoid | Haemochorial | Human, Rodents |
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Animal Reproduction. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
