Animal Kingdom II
They have the following characteristics:
- Body is segmented and divided into three parts. They are head, thorax, and abdomen.
- They have usually three pairs of jointed legs and two pairs of wings.
- They have compound eyes and feelers.
- Sexes are separate and life cycle completes in four phases i.e. egg, larva, pupa, and adult.
- Their body is covered externally with an exoskeleton.
- Their mouthparts are well developed for chewing, piercing and sucking.
- They are unisexual i.e. mal;e and female sex are separate
The phylum arthopoda are divided into four classes. They are crustacean, insecta, myriapoda, and arachnida.
- They are aquatic animals.
- Head and thorax are fused to form a cephalothorax.
- Respiration takes either by gills or general body surface.
- Head bears a pair of compound eyes and five pairs of appendages.
Examples: prawn, crab, cray-fish etc.
- They are mostly terrestrial and rarely aquatic.
- The body is divided into three parts: head, thorax, and abdomen.
- Head bears a pair of compound eyes and a pair of antenna.
- Thorax bears three parts of legs and one or two pairs of wings.
Examples: grasshopper, termite, butterfly, housefly etc.
- The animals of this class are terrestrial.
- The body is divided into two parts: cephalothorax and abdomen.
- They have four pairs of walking legs.
- They do not have compound eyes and feelers.
Examples: spider, scorpion, mite etc.
- They have a soft body which is usually covered with a calcareous shell.
- Body is divided into head, visceral mass, and foot.
- The head bears mouth, tentacles, and sense organ.
- Their body is not symmetrical.
- They are unisexual.
- They have well- developed organ system.
- They are haemocoelomateanimals.
Examples: snail, slug etc.
They have the following characteristics:
- The body of these animals is soft and unsegmented.
- The body is covered with spine, which is made up of calcareous shell except octopus.
- Their body maybe star-like, elongated etc.
- They do not have a distinct head.
- They have tube feet for locomotion and peculiar system for food gathering.
- The mouth is situated on oral side .
- The anus is situated on aboral side.
Examples: starfish, sea-silly etc.
Things to remember
- Arthropodans have jointed foot and are metamerically segmented animals.
- Echinoderms are spiny skinned animals found only in marine water.
- The body of mollusca is soft, unsegmented and without appendages.
- The excretory system is absent in echinodermata.
- Body layer of phylum mollusca is triploblastic.
- Excretion in mollusca takes place by paired metanephridia or kidney.
- It includes every relationship which established among the people.
- There can be more than one community in a society. Community smaller than society.
- It is a network of social relationships which cannot see or touched.
- common interests and common objectives are not necessary for society.
Videos for Animal Kingdom II
Questions and Answers
Nine phylum of Invertebrate animals are as follows:
i) Locomotary organs are absent.
ii) Excretion takes place through contractile vacuole.
iii) It is simplest and microscopic animals.
i) Body contains numerous pores called ostia.
ii) It is usually fixed and branched.
iii) The nervous or sensory cells are absent.
Any three characteristics of phylum Aschelminthes are as follows:
i) These are unisexual animals i.e. sexes are separate.
ii) Alimentary canal is straight with mouth and anus.
iii) Respiratory and circulatory system are absent.
E.g. Ascaris and hook worm.
The differences between male and female Ascaris are as follows:
|The posterior end is ‘c’ shaped.
||The posterior end is erect or slightly curved.
|It is smaller than female.
||ii) It is larger than male.
|iii) A pair of penal setae project out of the genital aperture.
||iii) Cloaca and penal setae are absent.
Four common features of Phylum Annelida are as follows:
i) Their body part is externally segmented.
ii) Circulatory system is closed type.
iii) Body is triploblastic, bilaterally symmetrical.
iv) Locomotion is carried out by bristle or setae. E.g. earthworm, leech etc.
The differences between tape worm and hook worm are as follows:
|i) It belongs to phylum Platyhelminthes.
||i) It belongs to phylum Nemathelminthes.
|ii) The body is flat.
||ii) The body is long cylindrical.
|iii) Body is segmented.
||iii) Body is not segmented.
Those organisms in which both male and female sex organs are found in the single body are called hermaphrodite. E.g. earthworm.
Earthworms live in burrows which makes soil porus and soft. So, that air can pass easily as well as rate of absorption of water increases. Thus, earthworms acts as natural ploughers.
Three features of phylum arthropoda are as follows:
i) Body is segmented and divided into three parts i.e. head, thorax and abdomen.
ii) They have jointed legs.
iii) They have compound eyes and feelers.
Phylum arthropoda is the largest phylum of animal kingdom because they are found in air, water and land. Also, that they can produce large number of young ones in each breed by different methods of reproduction. So, they are abandon in nature.
Arthropoda is subdivided into four classes. They are:
|i) It belongs to phylum arthropoda.
||i) It belongs to phylum coelenterate.
|ii) Locomotive part is jointed legs.
||ii) Locomotive part is tentacle.
|iii) Respiration takes place by trachea.
||iii) Respiratory system is absent.
Octopus falls on phylum Mollusca. It general features are:
i) Their body are unsegmented, and soft.
ii) Shell is present.
iii) They are unisexual.
The general features of phylum Echinodermata are:
i) Their body is covered with spiny-skin.
ii) They do not have distinct head.
iii) They have tube feet of locomotion.
iv) Mouth lies on the ventral surfaces.
The hard shell of Mollusca is made up of calcium carbonate.
i) Kingdom: Animal
ii) Kingdom: Animal
iii) Kingdom: Animal
iv) Kingdom: Animal
Example: Liver fluke
v) Kingdom: Animal
vi) Kingdom: Animal
vii) Kingdom: Animal
viii) Kingdom: Animal
ix) Kingdom: Animal
x) Kingdom: Animal
xi) Kingdom: Animal
xii) Kingdom: Animal
Echinodermata (star fish).