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I presume you refer to the ovum which is produced and fertilized internally. A bird's or reptile's egg is much larger because most of it is food to nourish the developing embryo. A placental mammal doesn't need to provide this because the young are nourished through the placenta as they develop inside the mother.
Wiki User
∙ 6y ago
Wiki User
∙ 6y agoPlacental mammals do not lay eggs. Your question is meaningless.
Wiki User
∙ 9y agoThe eggs of viviparous animals do not have to develop outside of the female so they don't require the large amount of nutrients that an egg that develops external to the female.
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Why the eggs of viviparous animals are very small in size?
Size of egg depends upon size of yolk in egg . Amount of yolk is related to type of development . As development takes place inside body of females in viviparous animals and placenta provides food and materials for development hence there is no need for large egg in viviparous mammals. Human egg is of size of a period .
How big are the eggs of stick insects?
the size of small seeds the size of small seeds
Do Hummingbird lay eggs?
Yes..The eggs are about the size of a small pea.
What is a small game?
rabbits other animals small in size
What size are polish frizzled chicken eggs?
Polish eggs are usually fairly small - about the size of a dual purpose pullet egg.
Information on the maximum no of eggs can be laid at a time by different animals?
The number of eggs that can be laid by any animal differs based on the size. Generally larger species will lay less eggs than smaller animals.
What are small animals?
obviously, these are animals that are small in size... -wEndy
Do large animals have llarger cells then small animals?
No they do not. They all have the same size of cells.
What does a platypus lays eggs like?
Platypus eggs are very small. They are just a couple of centimetres in size - about the size of a grape. They average 11 mm in diameter. They are small, smooth and leathery, unlike birds' eggs, which are hard-shelled. They weigh just a few grams.
Are eggs usually the size of small grape fruits?
no, eggs are much smaller than even the smallest grapefruit.
Does small animals have small cells?
No, all multicellular organisms have the same size cells.
Are Western Tasers deadly animals?
Tasers are not animals. If you mean Tarsiers, they are very small, about to size of a man's fist, and eat bugs, snails, and very small animals.
