Tag: aves

Questions Related to aves

Which one of the following is not a member of Eutheria?

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Gorilla

  2. Pangolin

  3. Mole

  4. Platypus

Show answer
Correct Option: D
Explanation:

The Eutheria clad consists of the Placental Mammals.

Gorilla, Pangolin, and Moles are all placental mammals and hence belong to Eutheria.
Platypus is a monotreme and belongs to Prototheria.
So the correct answer is 'Platypus'.

Choose the correct answers from the alternatives given.
Generally the breathing system in birds:

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. is identical to the human breathing system

  2. is merely accelerated by the flight muscles

  3. resembles the positive pressure system of a frog

  4. requires a flow-through bronchi-lung so constant oxygen absorption can meet the high oxygen demand

Show answer
Correct Option: D
Explanation:

Unidirectional flow means that air moving through bird lungs is largely 'fresh' air & has a higher oxygen content.  So, in bird lungs, more oxygen is available to diffuse into the blood. 

So the correct answer is "requires a flow-through bronchi-lung so constant oxygen absorption can meet the high oxygen demand".

Choose the correct answers from the alternatives given.
The organ of nutrition used in fetal development in the most successful mammals is the:

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. mammary gland

  2. pouch

  3. placenta

  4. marsupium

Show answer
Correct Option: C
Explanation:

Maternal nutrition plays a vital role in the growth and development of the fetus. During prenatal development, the fetal circulatory system is integrated with the placenta via the umbilical cord so that the fetus receives both oxygen and nutrients from the placenta. The placenta is an organ that develops in your uterus during pregnancy. This structure provides oxygen and nutrients to your growing baby and removes waste products from your baby's blood. The placenta attaches to the wall of your uterus, and your baby's umbilical cord arises from it.

So, the correct option is, 'Placenta'.

Scrotum developed in metatheria occurs

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. On sides of penis

  2. Behind penis

  3. In front of penis

  4. None of the above

Show answer
Correct Option: C
Explanation:

Metatherians or marsupials are mammals mostly found in Central and South America and in Australia. They include animals like bilbies, wombat, and kangaroos et cetera. In contrast to placental mammals, their scrotum develops in front of the penis instead of behind it. 

So, the correct answer is 'In front of penis'.

Flightless aquatic birds belong to

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Ratitae

  2. Impennae

  3. Carinatae

  4. Odontognathae

Show answer
Correct Option: B
Explanation:
The duper order impennae constitutes birds which are flightless, with paddles like wings or flippers.these birds have webbed feet and can swim well.they are adapted to aquatic life.impennae belongs to the subclass neornithes of the class aves.

Choose the correct answers from the alternatives given.
How are salamanders different from snakes?

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Ancestors of snakes but not salamanders were tetrapods

  2. Salamanders reproduce on land but snakes do not

  3. Snakes but not salamanders lay a shelled egg

  4. Salamanders are carnivores, and snakes are herbivores

Show answer
Correct Option: C
Explanation:

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.

So the correct answer is "Snakes but not salamanders lay a shelled egg".

Double uterus and double vagina are characteristic of.

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Prototheria

  2. Metatheria

  3. Chiroptera

  4. Cetacea

Show answer
Correct Option: B
Explanation:

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'.

Find the odd monkey out.

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Baboon

  2. Gibbon

  3. Macaque

  4. Langur

Show answer
Correct Option: A
Explanation:

  • 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
So, the correct answer is 'Baboon'

Pouched or marspium containing mammals are

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Prototheria

  2. Metatheria

  3. Eutheria

  4. Theria

Show answer
Correct Option: B
Explanation:

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.

So, the correct answer is 'Metatheria'.

In which of the following groups contain oviparous mammals?

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Prototheria

  2. Metatheria

  3. Eutheria

  4. Theria

Show answer
Correct Option: A
Explanation:
  • 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'.