answersLogoWhite

0


Best Answer

because unlike mammals they are fed on milk and of course they are warm blooded therfore they need more enery they need more energy to keep their body temperature higher im not intierly sure

User Avatar

Wiki User

12y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

12y ago

Reptiles are cold-blooded so their metabolic rate can drop right down which means that they use less energy which means they don't need to eat as much as Mammals.

This answer is:
User Avatar

User Avatar

Wiki User

11y ago

Incomplete Cleavage

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why do birds and reptiles need more yolk than mammals?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What do mammals reptiles amphibians birds and fish need to survive?

They all need forms of nourishment to suvive.


Difference and similarities of birds reptils and mammals?

SIMILARITIES. Birds, reptiles, and mammals are all a part of the animal kingdom! (OH MY GOSH!) They all need the same things- food, water, vitamins, nutrients, and things of the such. They are all multi-cellular, eukaryotic organisms. They all have the ability to mate and raise/have offspring. These three also all have similar body parts, and body functions. DIFFERENCES. Mammals give birth to live offspring- birds and some reptiles don't and lay eggs. Birds have the ability of flight- mammals and most reptiles do not. Reptiles are covered in scales or some other form of rough 'coat'- birds have feathers (though some like the Cassowary have some rough and slightly scaly napes and such), and mammals have fur and things of the such. Reptiles and most birds are warm blooded- mammals are cold blooded. Hope it helped! :D ~AP Wulf


Why do mammals need more oxygen than reptiles?

Mammals maintain a higher body temperature. In order to do so, they require more energy and that requires more oxygen.


What are the differences between amphibians fish mammals reptiles and birds?

Well, amphibians live in damp wet places so they can keep their skin moist and reptiles need to be dry because they are cold blooded meaning they need sunlight to keep active during the day and birds have feathers that were once scales but they evolved to be feathers enabling them to fly and mammals mostly have hair and they can produce heat without the power of sunlight and they rule the earth today because we are mammals. I hope this explains your question :D


Birds are more common in island communities than mammals because many birds can?

fly to and from the island while mammals need would need a land route or be taken by boat.


Why did birds evolve after reptiles?

Because they can generate their own body heat - reptiles cannot and need a warm environment


Why birds and mammals are more active in the middle of winter than amphibians and reptiles?

Because reptiles and amphibians are cold-blooded and hibernate during winter. This means they respire very slow and become sluggish. When they hibernate they basically become uncounscious. Mammals on the other hand, are warm-blooded. This means they have a constant body temperature. During winter they need more food to burn for respiration and therefore are more active because they search for food all the time.


What is a brief description of birds of reptiles of amphibians of mammals and of fish?

For a fabulous answer, read just the first paragraph or two of each of the articles linked below. You'll have all the information you need.


Why do mammals need to eat all the time?

Apart from moving about, replacing worn-out cells and such, mammals are warm-blooded, and need to spend a fair bit of effort on keeping their body temperature up. This in particular makes mammals need more food than reptiles for instance.


Were reptiles the first vertebrates to be well adapted to live their entire lives on land?

Mammals,birds and reptiles are fully adapted to life on land. Fish live in water and amphibians start their life in water, then live on land.


Why does a mammal need more oxygen than a reptile of the same size?

Yes, mammals have a 4chambered heart, while reptiles only have a 3chambered heart.


How do you get the janitor challenge to appear on your tap zoo?

You need to get 8 birds, 6 reptiles and 50 mammals and cross level 13. This will make you finish the achievement "Spice of Life" and then you can unlock the Janitor Achievement