Consider the following statements:
- Some species of turtles are herbivores.
- Some species of fish are herbivores.
- Some species of marine mammals are herbivores.
- Some species of snakes are viviparous.
Which of the statements given above are correct?
Detailed Explanation:
Answer: Option 4 — 1, 2, 3 and 4
All four statements are factually correct as they accurately describe the dietary habits and reproductive characteristics of various animal species. Each statement can be verified through well-documented examples from the animal kingdom.
✅ Statement 1 – Correct: Many turtle species like green sea turtles and Galapagos tortoises are herbivores, feeding primarily on plants, leaves, and fruits.
✅ Statement 2 – Correct: Numerous fish species such as surgeonfish, parrotfish, and tangs are herbivorous, feeding on algae and seaweed in marine ecosystems.
✅ Statement 3 – Correct: Some marine mammals like manatees and dugongs (sea cows) are herbivores, feeding exclusively on seagrasses and aquatic vegetation.
✅ Statement 4 – Correct: Several snake species including boas, vipers, and sea snakes are viviparous, giving birth to live young instead of laying eggs.
📝 Short Notes: Biodiversity - Feeding Types and Reproductive Modes
| Category | Examples | Key Characteristics |
|---|---|---|
| Herbivorous Reptiles | Green sea turtle, Galapagos tortoise, Marine iguana | Feed on plants, algae, seagrass; adapted digestive systems |
| Herbivorous Fish | Parrotfish, Surgeonfish, Tangs, Rabbitfish | Graze on algae and seaweed; crucial for coral reef health |
| Herbivorous Marine Mammals | Manatees, Dugongs (Order Sirenia) | Feed on seagrass; gentle, slow-moving aquatic herbivores |
| Viviparous Snakes | Boas, Vipers, Sea snakes, Garter snakes | Give birth to live young; embryos develop inside mother |
- Herbivory in Marine Ecosystems: Herbivorous species play crucial roles in maintaining ecosystem balance by controlling algal growth and vegetation.
- Viviparity vs Oviparity: While most reptiles are oviparous (egg-laying), viviparity has evolved in several snake families as an adaptation to specific environmental conditions.
- Green Sea Turtle: Adults are almost exclusively herbivorous, feeding on seagrasses and algae, though juveniles may be omnivorous.
- Ecological Importance: Herbivorous fish are essential for coral reef health as they prevent algal overgrowth that can smother corals.
Question 16 of 22 Keystone and Flagship Species
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