Videos Related with Classification of Vertebrates

Note on Classification of Vertebrates

  • Note
  • Things to remember
  • Videos
  • Exercise
  • Quiz

General characteristics of different vertebrate class

source:www.slideshare.net
source:www.slideshare.net

Pisces:

  • Their body is long and streamlined.
  • Body is covered with waterproof scales.
  • They have paired fins for locomotion.
  • Respiration takes place by gills. Gills are covered by operculum.
  • They have sac-like air bladder or swim bladder, which helps in floating.
  • Their heart is two-chambered.
  • They lay eggs in water. So, they are called oviparous. Fertilization is external.
  • E.g.:-labeo,hilsa, seahorse etc.

http://i.imgur.com/bVK46hh.jpg

http://i.imgur.com/lBjDPfS.jpg

Amphibia:

  • Their body is divisible into head and trunk.
  • They are cold-blooded animals.
  • Their skin is usually thin, soft and moist.
  • They have two pairs of paradactyle limbs.
  • They breathe through their gills at their larval stage and through skin or lungs in their adult stage.
  • They have three-chambered heart.
  • Their tadpoles have tail.
  • They might have poisonous glands on their skin.
  • Their fertilization occurs in water.
  • E.g. Frog, Toad etc.

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Reptilia:

  • They are cold-blooded, terrestrial or aquatic animals.
  • Their body is covered with dry skin with horny scales.
  • Their body can be divided into head, neck, trunk and tail.
  • They breathe through lungs.
  • They lay their eggs on land. Fertilization is internal.
  • They have three-chambered heartbutcrocodilehasfour-chambered heart.

  • E.g. Lizards, Snakes, Crocodile etc.

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Aves:

    • Their body is streamlined and divided into head, neck, trunk and tail.
    • Their body is covered with feathers; scales are present in hind legs only.
    • Jaws are modified into beak and bill, without teeth.
    • They have lungs for breathing and air sacs for easy flight.
    • Skeleton is light and spongy due to presence of air cavities. The bones are called pneumatic bones due to presence of air sacs.

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  • They have four-chambered heart with two auricles and two ventricles.
  • E.g. Parrot, crow, sparrow etc.

Mammalia:

  • Their body is covered with hairs.
  • Their body is divided into head, neck trunk and tail. Tail is absent in some.
  • They give birth to young ones and suckle them with milk.
  • Skin is mostly dry.
  • Muscular portion called diaphragm separates the thoracic cavity from abdomen.
  • Most of them have a pair of external ear called pinnae.
  • They have well-developed sense organ and heart is four chambered.
  • E.g. Human, Bat, Dolphin, Monkey, whale

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  • General characteristics of different vertebrate class: Pisces, Amphibia, Reptilia, Aves and Mammalia.
  • The body of pisces is covered with waterproof scales.
.

Very Short Questions

The four characteristics of pieces are: i. They have stream lined body to reduce water resistance. ii. They breathe with the help of gills. iii. They have different types of fins for locomotion. iv. They reproduce sexually through external fertilization.

The three diagnostic features of amphibian animals are: a. They can survive both on land and in water. b. They have soft and moist skin. c. They use gills, skin and lungs for breathing.

The two characteristics of reptile are-

  1. Their body is covered with dry scales.
  2. They have either no limbs or highly reduced limbs.

The two characteristics of aves are-

  1. Their body is covered with feathers.
  2. They have light bones that help in flying.

The two characteristics of mammals are:

  1. Their body is covered with more or less hair.
  2. The young ones suckle the milk produced from the mammary glands of the female.

a. Fish: Kingdom- Animal Phylum- Chordata Sub-phylum- Vertebrata Class- Pisces Type- Fish
b. Wall Lizard: Kingdom- Animal Phylum- Chordata Sub-phylum- Vertebrata Class- Reptilia Type- Wall Lizard
c. Cow Kingdom: Animal Phylum- Chordata Sub-phylum- Vertebrata Class- Mammalia Type- Cow
d. Whale Kingdom: Animal Phylum- Chordata Sub-phylum- Vertebrata Class- Mammalia Type- Whale

Phylum- Chordata Class- Reptilia
Wall lizards are not seen during cold because they are cold blooded animals and cannot maintain constant body temperature due to which their body is easily affected.

  1. Ostrich Phylum- Chordata
    Characteristic- Its body is covered with feathers.
  2. Bat Phylum- Chordata
    Characteristic- It gives birth to young ones.
  3. Bamboo Division- Angiosperms
    Characteristic- Its leaves have parallel veins.

Wall lizards are cold-blooded animals. They cannot maintain constant body temperature. As their body temperature is easily affected by the external temperature, they are not seen during cold.

Animal having webbed toes and external fertilization is frog. Following are the characteristics of frog:-

  1. It respires through skin in water and on land with the help of lungs.
  2. Its skin is moist and soft.

Cow is kept in class mammalia because:

  1. It possessed mammary glands.
  2. It gives birth to the young ones directly.

0%
  • Which one of the following is not cold-blooded animal?

    Reptilia


    Pisces


    Aves


    Amphibia


  • Animals who breathe through their gills at their larval stage and through skin or lungs in their adult stage are _______ .

    Aves
    None of above
    Pisces
    Reptilia
  • They breathe through their gills at their larval stage and through skin or lungs in their adult stage ______.

    Reptilia


    Amphibia


    Mammalia


    Pisces


  • Study of reptiles is called ________ .

    reptology
    herpetology
    hameatology
    gerontology
  • Which among the following belongs to Pisces?

    Jelly fish
    Cod fish
    Sea mouse
    Silver fish
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