Tag: animal diversity - ii (phylum: chordata)

Snakes have leathery, soft or hard eggs laid on land or maintained inside the body until hatching. Salamanders have soft eggs normally laid in water or in damp media.

Marsupials have two vagina and two uterus and before birth a birth canal forms between them. The ancestors of marsupials are part of a larger group called metatherians and they represent the clade originating from the last common ancestor of metatherians. So, the correct option is 'Metatheria'.

• Baboon is an old world monkey belonging to the genus Papio
• Baboon is a very strong animal having sharp canine teeth
• They are well known for their intelligence

Metatherians are mammals that are also known as marsupials. Most of the marsupials are found in Central and South America and in Australia. They are called marsupials as they have a marsupium or pouch on their bodies. This group consists of animals like kangaroos, wombat, macropods, et cetera.

• Oviparous animals are the egg-laying animals which show little or no embryonic development within the mother.
• This type of reproductive method is common in most fish, amphibians, reptiles, birds and prototherians.
  
• Prototherians are egg-laying mammals and feed their newborn like all other mammals.  
• They lack nipples but the skin over their mammary glands secrete milk for their babies. 
• They are called monotreme as they have only one opening for excretion and reproduction. 
• So, the correct answer is 'Prototheria'.

Gorillas are ground-dwelling, herbivorous apes, they are the largest living primates, which are mammalian animals.

(A) Eutherian are mammalian clade consisting of Cretaceous. For example-Scaly anteater.

Opossum is the largest order of marsupials in West hemisphere containing 103 species. Metatherials are the mammalian clade that include all mammals closely related to marsupials.

Fishes have fins and gills which help them swim and breathe in water.