NCERT Class 11 Chapter 4 Animal Kingdom

The phylums which have water transport system and water vascular system

Porifera and Echinodermata

Phylums in which their organisms are hermaphorodites

Sponges,Cnidaria,Ctenophora,Platyhelminthes,Annelida(Earthworm and Hirudinaria)

The phylum at which dioecious organims originated

Nematodes

Sponges Asexual mode of reproduction is by

Fragmentation

Sponges Sexual mode of reproduction is by

Gametes

Which phylum has Gastro-vascular cavity, single opening and mouth on hypostome?

Cnidaria

Ctenophores are commonly called as

Sea walnuts or Comb Jellies

Phylums in which digestion is intracellular and extracellular

Cnidaria,Ctenophora

What are corals(Cnidaria made of?

Calicium Carbonate

Medusa(Umbrella form) reproduces

Sexually

Polyp reproduces

Asexually

The function of Cilliated comb plates on Ctenophora

Locomotion

Number of dorsal cilliated comb plates

8

Why are flatworms called so?

The body is dorso-ventrally flat

The forms of platyhelminthes that have hooks and suckers

Parasitic forms

The cells which help in osmoregulation and excretion in platyhelminthes

Flame cells

The platyhelminthes that has regeneration capacity

Planaria

Which phylum first originated a muscular pharynx

Aschelminthes

The phylum in which organ system of classification was first seen in

Aschelminthes

How does a Nematode excrete wastes from body cavity?

Excretion of waste is through excretory pore.

The phylum where metamerism or annuli were seen for the first time is

Annelida

The muscles possessed by annelida for locomotion are

Longitudinal and circular muscles

Examples of Aquatic annelids

Nereis

Locomotion of Nereis is by

Parapodia

Double ventral nerve cord is exhibited by

Annelida

Function of Nephridia in annelids

Excretion and osmoregulation

The body of the organism of arthropoda are divided in to

Head , thorax ,Abdomen

Respiration in Limulus is by

Book Gills

Respiration in Scorpion is by

Book Lungs

Respiration in Cockroach is by

Tracheal system

Discontinous Ventilation is exhibited by

Cockroach

Economically important insects

Bombyx (Silk worm), Apis ,Laccifer(Lac Insect)

Vectors Insects

Anopheles,Culex ,Aedes

The disease transmitted by Aedes mosquitoes is

Dengue, Chickenguinea

Gregarious pest

Locust(Grass hopper)

Living Fossil

Limulus(King Crab)

Function of Malpighian tubules in arthropods

Excretion

Second Largest Phylum

Mollusca

The organisms belonging to mollusca have their body divided in to

Head , Muscular foot,Visceral hump

The space between hump and the mantle of mollusca is called

Mantle Cavity

Feather like gills are present in which phylum

Mollusca

Location of feather like gills in Mollusca

Present in the Mantle Cavity

The function of feather like gills (Ctenedium)

Respiration and Excretion

In Echinodermata the location of mouth and Anus

Mouth on the ventral side and Anus on the dorsal side

Distinctive feature of Echinodermata

Presence of water vascular system

The phylum in which excretory system is absent

Echinodermata

The phylum which consists of small group of worm like marine animals

Hemichordata

Body of hemichordata organims is divided into

Anterior Proboscis, Collar , A long Trunk

Excretion in hemichorata is through

Proboscis gland

Characteristic feature of chordates

Hollow ventral cord ,Notochord ,Pharyngeal gill slits , Post anal Tail

CNS of chordates is characterised by the presence of

Dorsal, Hollow , single nerve cord

CNS of non chordates is characterised by the presence of

Ventral, Solid , Double nerve cord

Subphylum of chordates

Urochordata(Tunicata) ,Cephalochordata, Vertebreta

Urochordates and Cephalochordates are known as

Protochordates

Feature of Urochordates

Notochord is present till the larval stage

Feature of Cephalochordates

Notochord is persistent throughout the life time

Number of Gill slits in Cyclostomes

6-15 Pairs

Which of fins of Chondrichtyes bear Claspers

Pelvic Fins

The type of scales in cartilaginous fishes

Placoid scales

Th type of scales in Bony fishes

Cycloid/Ctenoid

Number of gills in bony fishes

4 pairs of gills

The location oil gland in aves

Base of the tail

The only reproduction occuring in phylum Ctenophora

Sexual Reproduction

Oviparous Mammal

Ornithorhynchus(Platypus)

Cyclostomes

These organisms belong to Division Agnathostoma ,where all of the species are ectoparasites on some fishes.

Reproduction in Cyclostomes

Cyclostome migrate from marine to freshwater to lay eggs.

Free swimming larva of coelenterates

Planula

Parasitic adaptation of Platyhelminthes

Presence of Hooks, Suckers and the ability to absorb nutrients from the general body surface of the host.

The study of insects is called

Entomology

Sensory organs in Arthropods

Simple or Compound Eyes, Statocyst or Balance organ, Antennae