Q9 / 180 · NEET 2013 (Karnataka) · Botany
The characteristics of class Reptilia are
- Abody covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into a common cloaca.
- Bfresh water animals with bony endoskeleton air-bladder to regulate buoyancy.
- Cmarine animals with cartilaginous endoskeleton, body covered with placoid scales
- Correct answerDbody covered with dry and cornified skin, scales over the body are epidermal, they do not have external cars.
Solution
Characteristics of class Reptilia:
1. Creeping and burrowing terrestrial animals with scales on their body, skin is dry, and rough, without any glands.
2. Cold-blooded animals; exhibit a meroblastic segmentation.
3. Few of these shed the scales on their skin as skin cast.
4. Respiration by lungs.
5. Two pairs of pentadactyl limbs, each bearing claws. Snakes are an exception.
6. Heart is 3 chambered. However, crocodiles have a 4-chambered heart.
7. Nervous system comprises of 12 pairs of cranial nerves, lateral line system is absent.
8. Except for snakes, all the reptiles have well-developed ears.
9. possess a typical cloaca.
10. Reptiles are ureotelic, uricotelic, and ammoniotelic.
11. Fertilization is internal; oviparous and the eggs are very yolky
Hence, the correct answer is option: 'D'.