Clifford/comodo dragon

by kwajscience
Last updated 6 years ago

Discipline:
Science
Subject:
Biology
Grade:
9

Toggle fullscreen Print glog
Clifford/comodo dragon

The Komodo dragon[3] (Varanus komodoensis), also known as the Komodo monitor, is a large species of lizard found in the Indonesian islands of Komodo, Rinca, Flores, Gili Motang, and Padar.[4] A member of the monitor lizard family (Varanidae), it is the largest living species of lizard, growing to a maximum length of 3 metres (10 ft) in rare cases and weighing up to approximately 70 kilograms (150 lb). source wikapedia

Komodo dragonSubphylum:VertebrataClass:ReptiliaOrder:SquamataSuborder:LacertiliaFamily:VaranidaeGenus:VaranusSubgenus:V. (Varanus)Species:V. komodoensisBinomial name:Varanus komodoensis Ouwens, 1912source wikapedia

The Komodo dragon uses its tongue to detect, taste, and smell stimuli, as with many other reptiles, with the vomeronasal sense using the Jacobson's organ, rather than using the nostrils.[17] With the help of a favorable wind and its habit of swinging its head from side to side as it walks, a Komodo dragon may be able to detect carrion from 4–9.5 km (2.5–5.9 mi) away.[22] It only has a few taste buds in the back of its throat.[17] Its scales, some of which are reinforced with bone, have sensory plaques connected to nerves to facilitate its sense of touch. The scales around the ears, lips, chin, and soles of the feet may have three or more sensory plaques.[16] source wikapedia

As with other Varanids, Komodo dragons have only a single ear bone, the stapes, for transferring vibrations from the tympanic membrane to the cochlea. This arrangement means they are likely restricted to sounds in the 400 to 2,000 hertz range, compared to humans who hear between 20 and 20,000 hertz.[12][20] It was formerly thought to be deaf when a study reported no agitation in wild Komodo dragons in response to whispers, raised voices, or shouts. This was disputed when London Zoological Garden employee Joan Proctor trained a captive specimen to come out to feed at the sound of her voice, even when she could not be seen.[21] The Komodo dragon is able to see as far away as 300 m (980 ft), but because its retinas only contain cones, it is thought to have poor night vision. The Komodo dragon is able to see in color, but has poor visual discrimination of stationary objects.[22] source wikapedia

How do comodo dragons communicate?They generally don't-- Komodos are typically very solitary except in mating season, and even then, they don't tend to enjoy each other's company much.source answer.com

Characteristics of Class Reptilia are given below: 1) Class reptilian (L. Reptilia= creeping) includes animals which are cold blooded.2) The skin has a few cutaneous glands and high levels of keratin, which prevents water loss through the skin.3) The scales and scutes are formed from the epidermis and are also made of keratin, to protect the body.4) Reptiles are considered as tetra pods with two sets of paired limbs. Most of these animals have five clawed toes on each limb.5) All reptiles have spinal columns and a strong skeletal system with a rib cage. They have a well-developed brain and a central nervous system.6) Unlike amphibians, reptiles do not pass through an embryonic stage with gills. These animals breath with well-developed lungs, right from birth. Most of them have two lungs, except some snakes.7) All reptiles have three-chambered hearts, except crocodiles, which have four-chambered hearts (2 atria, 2 ventricles), like mammals and birds.8) Reptiles have a digestive system which has a muscular opening at the base of the tail.9) In case of reptiles inhabiting arid regions, water is further absorbed into the body and only the remaining waste is excreted.10) Twelve pairs of cranial nerve.11) These amniotic eggs can survive without water, as they have protective shells and membranes that allow oxygen and other gases to enter.12) Respiration by lungs only.13) The offspring of reptiles resemble the adults at the time of birth itself. There is no metamorphosis, as in the case of amphibians.14) Lateral sense organs are absent.15) They are the first animals with amniotic eggs, that can be laid on land and not in water.16) Reptile's characteristics include internal fertilization, as sperm gets deposited into the reproductive tract of the female directly.17) The cloaca is present.source preservearticles.com

Komodo Dragons


Tags

Comments

    There are no comments for this Glog.