英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Monotreme | Definition, Characteristics, Reproduction, Examples . . .
    Monotreme, any member of the egg-laying mammalian order Monotremata, which includes the amphibious platypus and the terrestrial echidnas of continental Australia, the Australian island state of Tasmania, and the island of New Guinea It is the most ancient living order of mammals
  • Monotreme - Definition, List, Examples, Characteristics, Picture
    These mammals derive their name from the Greek word monotreme, which means ‘single opening ’ This term refers to the single duct or cloaca that serves as the common exit point for their urinary, defecatory, and reproductive systems
  • The 5 Species Of Monotremes Living Today - WorldAtlas
    All of the surviving members of the monotreme group are indigenous to the island of New Guinea and Australia Four species of echidnas and the duck-billed platypus account for the five monotreme species living in the world today
  • What Is a Monotreme? 9 Facts About Earth’s Weirdest Mammals
    A monotreme is any mammal that lays eggs You probably know about the platypus, the most famous monotreme But have you heard about echidnas? In addition to being the only mammals that lay eggs, these animals have a number of strange characteristics that set them apart from most other mammals alive today Here are several fascinating facts
  • Monotremes: Incredible Mammals Who Lay Shelled Eggs
    Scientists have only described four monotreme species living in the modern world Scientists believe that a number of monotreme species formerly walked the earth
  • Monotremata (monotremes) | INFORMATION | Animal Diversity Web
    Like the eggs of birds, monotreme eggs are incubated and hatched outside the body of the mother Incubation lasts about 12 days The young, which are tiny and at a very early stage of development when they hatch, break out of the eggs using a "milk tooth They are protected in a temporary pouch in echidnas but not platypuses
  • Platypus - Wikipedia
    Genome Because of the early divergence from the therian mammals and the low numbers of extant monotreme species, the platypus is a frequent subject of research in evolutionary biology In 2004, researchers at the Australian National University discovered that the platypus has ten sex chromosomes, compared with two (XY) in most other mammals
  • MONOTREME Definition Meaning - Merriam-Webster
    The meaning of MONOTREME is any of an order (Monotremata) of egg-laying mammals comprising the platypuses and echidnas
  • What Is a Platypus’s Closest Living Relative? | Echidna, Monotreme, Egg . . .
    The closest living relatives of the platypus are the four living species of echidnas Both found in Australia and Tasmania, and echidnas also in New Guinea, these species are unique egg-laying mammals called monotremes Despite their close relation, they have adapted to very different environments and sources of food





中文字典-英文字典  2005-2009