Monotremes reproduce in a much different way than most other mammals do. The biggest difference is that they lay eggs rather than giving birth to live young. The eggs are leathery like many reptile eggs, rather than brittle, like the eggs of chickens and other birds are.
What makes a monotreme a monotreme?
Monotremes are different from other mammals because
they lay eggs and have no teats
. Monotremes are different from other mammals because they lay eggs and have no teats. The milk is provided for their young by being secreted by many pores on the female’s belly.
Is the chicken a mammal?
The proper answer is; technically speaking,
chickens are neither mammals nor reptiles
. They are birds, and further classified as a fowl as fowls are birds kept for meat or eggs.
What are the 3 monotremes?
Monotremes are a unique order of mammals that includes only three extant species: the duck-billed platypus (Ornithorynchus anitinus),
the short-billed echidna (Tachyglossus aculeatus)
, and the western long-billed echidna (Zaglossus bruijni).
What makes an animal a monotreme?
General characteristics. Like other mammals, monotremes are endothermic with a high metabolic rate (though not as high as other mammals; see below); have hair on their bodies; produce milk through mammary glands to feed their young; have a single bone in their lower jaw;
and have three middle-ear bones
.
Is a chicken a dinosaur?
So, are chickens dinosaurs?
No
– the birds are a distinct group of animals, but they did descend from the dinosaurs, and it’s not too much of a twist of facts to call them modern dinosaurs. There are many similarities between the two types of animal, largely to do with bone structure.
Is a penguin a mammal?
Like other birds, penguins have feathers. …
Penguins are fish, mammals, or amphibians
because they live in water, on land, or both. Penguins are birds, even though they spend time on land and in water. Their motion in the water more closely resembles flying than the swimming motion used by other animals.
Is a platypus a monotreme?
The
monotremes
are a group of highly specialised egg-laying predatory mammals, containing the platypus and echidnas. There are only five living species of monotreme, contained within two families: Family Ornithorhynchidae: the platypus, a single species in a single genus, Ornithorhynchus anatinus.
What animal lays eggs and is not a bird?
The platypus
(Ornithorhynchus anatinus) has a puzzling array of features. Not only does it have that iconic duck bill, it lays eggs like a bird or reptile but feeds milk to its young like a mammal.
Which is the only mammal that can fly?
6.
Bats
are the only flying mammal. While the flying squirrel can only glide for short distances, bats are true fliers.
What are the 5 types of monotremes?
- Western Long-beaked Echidna. The western long-beaked echidna (Zaglossus bruijni) is found on the island of New Guinea. …
- Eastern Long-beaked Echidna. …
- Sir David’s Long-beaked Echidna. …
- Short-beaked Echidna. …
- Duck-billed Platypus.
Do humans have cloaca?
At one point in the development of the human embryo, there is a cloaca
. It is the far end of a structure called the hindgut. This structure then divides to form a rectum, a bladder, and genitalia. The presence of a cloaca is normal in many adult animals (birds, reptiles, amphibians, some fish, and even a few mammals).
What are egg-laying animals called?
Use the adjective
oviparous
to describe an animal that lays eggs. Birds and lizards are oviparous. … In fact, all birds are oviparous, as are most fish, reptiles, and insects. The word oviparous is most often used in biology classes to distinguish egg-laying animals from those that give birth to live babies, like humans.
Are sharks dinosaurs?
Today’s sharks are
descended from relatives that swam alongside dinosaurs in prehistoric times
. … It lived just after the dinosaurs, 23 million years ago, and only went extinct 2.6 million years ago.
Are chickens the closest thing to dinosaurs?
You may have heard about this, but indeed
chickens are closely related to dinosaurs
. … A 68 million years old Tyrannosaurus Rex DNA was compared to DNA of 21 modern species of animals and from the analysis researchers found out that chickens are the closest one.
What animal is closest to a dinosaur?
The closest living things to dinosaurs need to be taken a look at in terms of classification of species. Dinosaurs are classified as reptiles, a group that includes
crocodiles
, lizards, turtles, and snakes. Of this large group of animals, other than birds, crocodiles are the closest living things to dinosaurs.
