ANIMAL KINGDOM -CLASS 11
BY – SAKSHI RAWAT
,BASIS OF CLASSIFING
ORGANISMS
LEVEL OF ORGANISATION
PRESENCE OR ABSENCE OF COELEM
TYPE OF CIRCULATION
TYPE OF SYMMETRY
DIGESTION
PRESENCE OF NOTOCHORD
SEGMENTATION
, PHYLUM – PORIFERA
BASIC CHARACTERISTICS ;
1. ACOELOMATES
2. ASYMMETRICAL
3. CELLULAR LEVEL OF ORGANISATION
4. FOUND IN MARINE AND ACQUATIC HABITAT
5. FERTILISATION IS EXTERNAL AND INDIRECT
FEATURES ;
1. THERE ARE TINY PORES IN THE BODY CALLED OSTILIA
THE CENTRAL CAVITY WHERE WATER REACHES THROUGH
PORES IS SPONGOCOEL .
THE PATHWAY THROUGH WHICH THIS WATER COMES OUT IS
CALLED OSCULLUM
, 2 . PORIFERANS POSSESS WATER VASCULAR SYSTEM ;
THIS WATER HELPS IN RESIRATORY EXCHANGE,
TRANSPORT OF FOOD AND REMOVAL OF WASTE.
3. SKELETON IS MADE OF UP SPICULES
4. CHOANOCYTES OR COLLAR CELLS IS
CHARACTERISTIC FEATURE OF PORIFERANS
4. SEXUAL REPRODUCTION BY GAMETES AND
ASEXUAL BY FRAGMENTATION
5. DIGESTION IS INTRACELLULAR
6. EXAMPLES ; EUSPONGILLA , SYCON ,
SPONGILLA
BY – SAKSHI RAWAT
,BASIS OF CLASSIFING
ORGANISMS
LEVEL OF ORGANISATION
PRESENCE OR ABSENCE OF COELEM
TYPE OF CIRCULATION
TYPE OF SYMMETRY
DIGESTION
PRESENCE OF NOTOCHORD
SEGMENTATION
, PHYLUM – PORIFERA
BASIC CHARACTERISTICS ;
1. ACOELOMATES
2. ASYMMETRICAL
3. CELLULAR LEVEL OF ORGANISATION
4. FOUND IN MARINE AND ACQUATIC HABITAT
5. FERTILISATION IS EXTERNAL AND INDIRECT
FEATURES ;
1. THERE ARE TINY PORES IN THE BODY CALLED OSTILIA
THE CENTRAL CAVITY WHERE WATER REACHES THROUGH
PORES IS SPONGOCOEL .
THE PATHWAY THROUGH WHICH THIS WATER COMES OUT IS
CALLED OSCULLUM
, 2 . PORIFERANS POSSESS WATER VASCULAR SYSTEM ;
THIS WATER HELPS IN RESIRATORY EXCHANGE,
TRANSPORT OF FOOD AND REMOVAL OF WASTE.
3. SKELETON IS MADE OF UP SPICULES
4. CHOANOCYTES OR COLLAR CELLS IS
CHARACTERISTIC FEATURE OF PORIFERANS
4. SEXUAL REPRODUCTION BY GAMETES AND
ASEXUAL BY FRAGMENTATION
5. DIGESTION IS INTRACELLULAR
6. EXAMPLES ; EUSPONGILLA , SYCON ,
SPONGILLA
