WebMonotremes ( / ˈmɒnətriːmz /) are prototherian mammals of the order Monotremata. They are one of the three groups of living mammals, along with placentals ( Eutheria ), and marsupials ( Metatheria ). Monotremes … WebJun 5, 2024 · Monotremes ( monotremata) are a unique group of mammals that lay eggs, unlike placental mammals and marsupials, who give birth to live young. Monotremes include several species of echidnas and the …
Curious Kids: why do eggs have a yolk? - The Conversation
WebSuch animals are called egg-laying animals. Fish, snakes, turtles, frogs, birds etc. are egg-laying animals. The egg consists of a hard protective outer shell. Inside the shell in the centre is a yellow portion called the yolk. It contains the developing baby called the embryo. It also contains food for the embryo. Echidnas , sometimes known as spiny anteaters, are quill-covered monotremes (egg-laying mammals) belonging to the family Tachyglossidae /tækiˈɡlɒsɪdiː/. The four extant species of echidnas and the platypus are the only living mammals that lay eggs and the only surviving members of the order Monotremata. … See more Echidnas are named after Echidna, a creature from Greek mythology who was half-woman, half-snake, as the animal was perceived to have qualities of both mammals and reptiles. An alternative explanation is a … See more The short-beaked echidna's diet consists mostly of ants and termites, while the Zaglossus (long-beaked) species typically eat worms and … See more Echidnas and the platypus are the only egg-laying mammals, known as monotremes. The average lifespan of an echidna in the wild is estimated to be around 14–16 … See more The female lays a single soft-shelled, leathery egg 22 days after mating, and deposits it directly into her pouch. An egg weighs 1.5 to 2 … See more Echidnas are medium-sized, solitary mammals covered with coarse hair and spines. The spines are modified hairs and are made of keratin, the same fibrous protein that makes up fur, claws, nails, and horn sheaths in animals. Superficially, they … See more Echidnas do not tolerate extreme temperatures; they use caves and rock crevices to shelter from harsh weather conditions. Echidnas are found in forests and woodlands, hiding under vegetation, roots or piles of debris. They sometimes use the burrows … See more Echidnas are very timid animals. When they feel endangered they attempt to bury themselves or if exposed they will curl into a ball similar to that of a hedgehog, both methods using their spines to shield them. Strong front arms allow echidnas to continue to dig … See more new college careers
Mapping the platypus genome: How Earth
WebExamples of animals that lay eggs 1. Insects 2. Birds 3. Reptiles 4. Amphibians 5. Mammals 1. Insects Insects are some of the most diverse and widespread creatures on … Oviparous animals are animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive method of most fish, amphibians, most reptiles, and all pterosaurs, dinosaurs (including birds), and monotremes. In traditional usage, most insects (one being Culex pipiens, or the common hou… new college campus