Question

State 20 characteristics of Reptilia
State 20 characteristics of Aves

Answer 1

Explanation:

• All reptiles have a backbone, which means they are vertebrates.
• All reptiles produce eggs. Most reptiles lay hard-shelled eggs, but a few give birth to live young.
• All reptiles have scales or scutes. Scales are small, hard plates that are made from a protein called keratin. Scutes are the shells of turtles and the armor of crocodiles and are very similar to scales. Unlike scales, they are bony structures and develop in a deeper skin level than scales. Both scales and scutes provide physical protection and help prevent water loss through the skin.
• Reptiles are ectothermic or cold-blooded, which means they cannot control their own body temperature.
• Their body can be divisible to head ,trunk and tail
• well developed circulatory system with 3 chambered heart
• excretory product: urea.

Aves :

1) The members of class aves are commonly known as birds.

1) The members of class aves are commonly known as birds.2) They are warm-blooded with an exoskeleton of feathers

rm-blooded with an exoskeleton of feathers3) Body usually spindle shaped, with four divisions: head, neck, trunk, and tail; neck disproportionately long for balancing and food gathering.

rm-blooded with an exoskeleton of feathers3) Body usually spindle shaped, with four divisions: head, neck, trunk, and tail; neck disproportionately long for balancing and food gathering.4) Limbs paired; forelimbs usually modified for flying; posterior pair variously adapted for perching, walking, and swimming; foot with four toes.

rm-blooded with an exoskeleton of feathers3) Body usually spindle shaped, with four divisions: head, neck, trunk, and tail; neck disproportionately long for balancing and food gathering.4) Limbs paired; forelimbs usually modified for flying; posterior pair variously adapted for perching, walking, and swimming; foot with four toes.5) Epidermal covering of feathers and leg scales.

rm-blooded with an exoskeleton of feathers3) Body usually spindle shaped, with four divisions: head, neck, trunk, and tail; neck disproportionately long for balancing and food gathering.4) Limbs paired; forelimbs usually modified for flying; posterior pair variously adapted for perching, walking, and swimming; foot with four toes.5) Epidermal covering of feathers and leg scales.6) Thin integument of epidermis and dermis.

7) bones are pneumatic

8) 4 chambered heart

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