CBSE Class 11 Biology Animal Kingdom MCQs

Refer to CBSE Class 11 Biology Animal Kingdom MCQs provided below available for download in Pdf. The MCQ Questions for Class 11 Biology with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 4 Animal Kingdom are an important part of exams for Class 11 Biology and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 11 Biology and also download more latest study material for all subjects

MCQ for Class 11 Biology Chapter 4 Animal Kingdom

Class 11 Biology students should refer to the following multiple-choice questions with answers for Chapter 4 Animal Kingdom in Class 11.

Chapter 4 Animal Kingdom MCQ Questions Class 11 Biology with Answers

Question : Classification of Porifera is based on

a) spicules

b) symmetry

c) reproduction

d) branching

Answer : spicules

 

Question : A chordate character is

a) postanal tail

b) gills

c) spiracles

d) None of these

Answer : postanal tail

 

Question : Which one of the following pairs of animals comprises ‘jawless fishes’?

a) Lampreys and hag fishes

b) Guppies and hag fishes

c) Lampreys and eels

d) Mackerals and Rohu

Answer : Lampreys and hag fishes

 

Question :  Leech is

a) Both

b) sanguivorous

c) ectoparasite

d) none of these

Answer : Both

 

Question : Which one of the following groups of animals is bilaterally symmetrical and triploblastic?

a) Aschelminthes (round worms)

b) Coelenterates (Cnidarians)

c) Ctenophores

d) None of these

Answer : Aschelminthes (round worms)

 

Question :  Which of the following animal is cold blooded and has 4 - chambered heart?

a) Crocodile

b) Ornithorhynchus

c) Calotes

d) none of these

Answer :  Crocodile

 

Question : Which one of the following is NOT a characteristic of phylum Annelida?

a) Pseudocoelom

b) Ventral nerve cord

c) Segmentation

d) Closed circulatory system

Answer : Pseudocoelom

 

Question : Which one of the following characters is not typical of the class mammalia?

a) Ten pairs of cranial nerves

b) Seven cervical vertebrae

c) Alveolar lungs

d) Thecodont dentition

Answer : Ten pairs of cranial nerves

 

Question : Which one of following feature is possessed by Crustaceans and not by insects?

a) Two pairs of antenna

b) Chitinous exoskeleton

c) Bilateral symmetry

d) Paired limbs

Answer : Two pairs of antenna

 

Question : Poison glands of snake are modified

a) Parotids

b) Sublinguals

c) Linguals

d) Maxillaries

Answer : Parotids

 

Question : The adults are radially symmetrical but larvae exhibit bilateral symmetry in

a) Echinodermata

b) Mollusca

c) Hemichordata

d) Cephalochordata

Answer : Echinodermata

 

Question : Solenocytes and metanephridia are excretory organs of

a) Platyhelminthes and Annelida

b) Coelenterata and Mollusca

c) Aschelminthes and Annelida

d) Annelida and Arthropoda

Answer : Platyhelminthes and Annelida

 

Question : Radial symmetry occurs in

a) Coelenterata and Echinodermata

b) Coelenterata and Platyhelminthes

c) Arthropoda and Mollusca

d) Porifera and Coelenterata

Answer : Coelenterata and Echinodermata

 

Question : In Amoeba and Paramecium osmoregulation occurs through

a) contractile vacuole

b) pseudopodia

c) nucleus

d) general surface

Answer : contractile vacuole

 

Question : Animals with metameric segmentation, bilateral symmetry and closed circulatory system belong to phylum

a) Annelida

b) Arthropoda

c) Echinodermata

d) Mollusca

Answer : Annelida

 

Question : Which one of the following characters is not typical of the class Mammalia?

a) Ten pairs of cranial nerves

b) Alveolar lungs

c) Thecodont dentition

d) None of these

Answer : Ten pairs of cranial nerves

 

Question : Animals like bats have/are

a) Endothermic

b) Efficient respiration. Non-vascular air sacs are connected to lungs to supplement respiration

c) Feathers which are modified reptilian scales

d) Hollow skeleton

Answer : Endothermic

 

Question : Complete the following analogy : Pigeon's milk : Crop :: Song

a) Syrinx

b) Proventriculus

c) Trachea

d) None of these

Answer : Syrinx

 

Question : Which of the following is not correct matching of phylum and its three examples?

a) Aschelminthes : Ancylostoma, Enterobius, Tubifex

b) Arthropoda : Buthus, Lepisma, Leptocorisa

c) Mollusca : Teredo, Aplysia, Chaetopleura

d) None of these

Answer : Aschelminthes : Ancylostoma, Enterobius, Tubifex

 

Question : All birds have

a) Internal fertilization, are oviparous and eggs are covered with calcareous shell

b) Nests to care their babies

c) Feather on their body and can fly

d) Oil gland at the base of tail

Answer : Internal fertilization, are oviparous and eggs are covered with calcareous shell

 
Question : Jelly fish belongs to class 
a) Hydrozoa
b) Scyphozoa
c) Anthozoa
d) None of these
Answer : Scyphozoa
 
Question : Earthworms are 
a) useful
b) harmful
c) more useful than harmful
d) more harmful
Answer : useful
 
Question : Photoreceptors of earthworm occur on
a) clitellum b) many eyes
c) dorsal surface
d) lateral sides
Answer : dorsal surface
 
Question : Transfer of Taenia to secondary host occurs as 
a) oncosphere
b) cysticercus
c) morula
d) egg
Answer : oncosphere
 
Question : In hot summer and cold winter, the number of malaria cases as well as Anopheles declines, reappearance of malaria in humid warm conditions is due to 
a) surviving malarial parasites in human carriers
b) surviving sporozoites in surviving mosquitoes
c) monkeys
d) mosquito larvae in permanent waters
Answer : mosquito larvae in permanent waters
 
Question : Blood of Pheretima is
a) blue with haemocyanin in corpuscles
b) blue with haemocyanin in plasma
c) red with haemoglobin in corpuscles
d) red with haemoglobin in plasma
Answer : red with haemoglobin in plasma
 
Question : Pheretima posthuma is highly useful as
a) their burrows make the soil loose
b) they make the soil porous, leave their castings and take organic debris in the soil
c) they are used as fish meal
d) they kill the birds due to biomagnification of chlorinated hydrocarbons
Answer : they make the soil porous, leave their castings and take organic debris in the soil
 
Question : Malpighian tubules are 
a) excretory organs of insects
b) excretory organs of annelids
c) respiratory organs of insects
d) respiratory organs of annelids
Answer : excretory organs of insects
 
Question : Kala-azar and oriental sore are spread by 
a) housefly
b) bed bug
c) sand fly
d) fruit fly
 
Question : Bladderworm/cysticercus is the larval stage of 
a) tapeworm
b) roundworm
c) pinworm
d) liver fluke 
Answer : tapeworm
 
Question : Earthworm possesses hearts 
a) 6 pair
b) 4 pair
c) 2 pair
d) 1 pair 
Answer : 4 pair
 
Question : The excretory structures of flat worms/Taenia are 
a) flame cells
b) protonephridia
c) Malpighian tubules
d) green glands
Answer : flame cells
 
Question : Which one occurs in Echinodermata?
a) Bilateral symmetry
b) Radial symmetry
c) Porous body
d) Soft skin
Answer : Radial symmetry
 
Question : An insect regarded as greatest mechanical carrier of diseases is 
a) Pediculus
b) Cimex
c) Musca
d) Xenopsylla
Answer : Musca
 
Question : Male and female cockroaches can be distinguished externally through 
a) anal styles in male
b) anal cerci in female
c) anal style and antennae in females
d) Both b) and c)
Answer : anal styles in male
 
Question : Metamorphosis of insects is regulated through hormone 
a) pheromone
b) thyroxine
c) ecdysone
d) All of these
Answer : ecdysone
 
Question : Ascaris lumbricoides infection occurs through 
a) sole of uncovered feet
b) contaminated cooked measly pork
c) improperly cooked measly pork
d) from air through inhalation
Answer : contaminated cooked measly pork
 
Question : Classification of Porifera is based on 
a) branching
b) spicules
c) reproduction
d) symmetry
Answer : spicules
 
Question : The simplest type of canal system in Porifera is 
a) ascon type
b) leucon type
c) sycon type
d) radial type
Answer : ascon type
 
Question : Ascaris larva is called 
a) cysticercus
b) rhabditiform
c) hexacanth
d) onchosphere
Answer : rhabditiform
 
Question : What is correct about Taenia? 
a) Male organs occur in posterior proglottids
b) Male organs occur in anterior proglottids
c) Female organs occur in anterior proglottids
d) Mature proglottids contain both male and female organs
Answer : Mature proglottids contain both male and female organs
 
Question : Assertion: Periplaneta americana is nocturnal, omnivorous, household pest 
      Reason: It is because it acts as scavenger
a) A is true but R is false
b) A is false but R is true
c) Both A and R are true and R is correct explanation of A
d) Both A and R are true but R is not correct explanation of A
Answer : A is true but R is false
 
Question : Aristotle’s lantern occurs in class 
a) Echinoidea
b) Asteroidea
c) Holothuroidea
d) Ophiuroidea
Answer : Echinoidea
 
Question : Eye of the molluscan group that resembles vertebrate eye is 
a) Bivalvia
b) Gastropoda
c) Pelecypoda
d) Cephalopoda
Answer : Cephalopoda
 
Question : Star fish belongs to 
a) Asteriodea
b) Ophiuroidea
c) Holothuroidea
d) Crinoidea
Answer : Asteriodea
 
Question : Adult Culex and Anopheles can be distinguished with the help of 
a) mouth parts/colour
b) sitting posture
c) antennae/wings
d) feeding habits
Answer : sitting posture
 
Question : Trachea of cockroach and mammal are similar in having 
a) paired nature
b) non-collapsible walls
c) ciliated inner lining
d) origin from head
Answer : non-collapsible walls
 
Question : A larval stage occurs in the life history of all members of the group 
a) frog, lizard and cockroach
b) Ascaris, housefly and frog
c) housefly, earthworm and mosquito
d) butterfly, frog and mosquito
Answer : butterfly, frog and mosquito
 
Question : What is true about Taenia saginata? 
a) Life history has pig as intermediate host
b) There are two large suckers on scolex
c) Rostellar hooks are absent
d) Rostellum has double circle of hooks
Answer : Rostellar hooks are absent
 
Question : Which one of the following animals possesses nerve cells but no nerves? 
a) Hydra
b) Tapeworm
c) Earthworm
d) Frog’s tadpole
Answer : Hydra
 
Question : Budding is a normal mode of asexual reproduction in 
a) starfish and Hydra
b) Hydra and sponges
c) tapeworm and Hydra
d) sponge and starfish
Answer : Hydra and sponges
 
Question : Give the correct matching of causative agent/ germ and disease 
a) Anopheles—malaria
b) Leishmania—sleeping sickness
c) Glossina—kala-azar
d) Wuchereria—filariasis
Answer : Wuchereria—filariasis
 
Question : Which one assists in locomotion? 
a) Trichocysts in Paramecium
b) Pedicellariae of starfish
c) Clitellum in Pheretima
d) Posterior sucker in Hirudinaria
Answer : Posterior sucker in Hirudinaria
 
Question : Coelom derived from blastocoel is known as
a) enterocoelom
b) schizocoelom
c) pseudocoelom
d) haemocoelom
Answer : pseudocoelom
 
Question : Radial symmetry is often exhibited by animals having 
a) one opening of alimentary canal
b) aquatic mode of living
c) benthos/sedentary
d) ciliary mode of feeding
Answer : benthos/sedentary
 
Question : Point out a non-parasite 
a) tapeworm
b) mosquito
c) leech
d) sea anemone
Answer : sea anemone
 
Question : Tube feet occur in 
a) cockroach
b) starfish
c) cuttle fish
d) cat fish
Answer : starfish
 
Question : Special character of coelenterates is 
a) polymorphism
b) nematocysts
c) flame cells
d) hermaphroditism
Answer : nematocysts
 
Question : Closed circulatory system occurs in 
a) snail
b) cockroach
c) cuttle fish
d) All of these
Answer : cuttle fish
 
Question : Which one belongs to Platyhelminthes?
a) Schistosoma
b) Trypansoma
c) Plasmodium
d) Wuchereria 
Answer : Schistosoma
 
Question : A chordate character is 
a) gills
b) spiracles
c) post-anal tail
d) chitinous exoskeleton
Answer : post-anal tail
 
Question : Fish which can be used in biological control of mosquitoes/larvicidal fish is 
a) eel
b) carp
c) cat fish
d) Gambusia
Answer : Gambusia
 
Question : Eutherians are characterised by 
a) hairy skin
b) true placentation
c) ovoviviparity
d) glandular skin
Answer : true placentation
 
Question : Flight muscles of bird are attached to
a) clavicle
b) keel of sternum
c) scapula
d) coracoid
Answer : keel of sternum
 
Question : Wish bone of birds is formed from
a) pelvic girdle
b) skull
c) hindlimbs
d) pectoral girdle/clavicles
Answer : pectoral girdle/clavicles
 
Question : Skin is a respiratory organ in 
a) lizards
b) birds
c) primitive mammals
d) frog
Answer : frog
 
Question : Penguin occurs in
a) Australia
b) Antarctica
c) Africa
d) America
Answer : Antarctica
 
Question : Kidney of adult rabbit is
a) pronephros
b) metanephros
c) mesonephros
d) opisthonephros
Answer : metanephros
 
Question : Bull frog of India is
a) Rana tigrina
b) R. sylvatica
c) R. Catesbiana
d) R. esculenta
Answer : Rana tigrina
 
Question : An egg laying mammal is
a) kangaroo
b) platypus
c) koala
d) whale
Answer : platypus
 
Question : Sound box of birds is called
a) pygostyle
b) larynx
c) syrinx
d) synsacrum
Answer : syrinx
 
Question : Gorilla, chimpanzee, monkeys and human belong to the same 
a) species
b) genus
c) family
d) order
Answer : order
 
Question : What is common in whale, bat and rat?
a) Absence of neck
b) Muscular diaphragm between thorax and abdomen
c) Extra-abdominal testes to avoid high temperature of body
d) Presence of external ears
Answer : Muscular diaphragm between thorax and abdomen
 
Question : Mucus helps frog in forming 
a) thick skin
b) dry skin
c) smooth skin
d) moist skin
Answer : moist skin
 
Question : All vertebrates possess 
a) renal portal system
b) dorsal, hollow central nervous system
c) four chambered ventral heart
d) pharyngeal gill slits
Answer : dorsal, hollow central nervous system
 
Question : What is common between ostrich, penguin and kiwi? 
a) Running birds
b) Migratory birds
c) Flightless birds
d) Four toed birds
Answer : Flightless birds
 
Question : Golden era/age of reptiles is
a) Palaeozoic
b) Mesozoic
c) Recent
d) Proterozoic
Answer : Mesozoic
 
Question : A common characteristic of all vertebrates is 
a) presence of skull
b) division of body into head, neck, trunk and tail
c) presence of two pairs of functional appendages
d) body is covered with an exoskeleton
Answer : presence of skull
 
Question : Closed circulatory system occurs in 
a) cockroach
b) tadpole/fish
c) mosquito
d) house fly
Answer :  tadpole/fish
 
Question : All chordates possess 
a) exoskeleton
b) limbs
c) skull
d) axial skeletal rod of notochord
Answer : axial skeletal rod of notochord
 
Question : Besides Annelida and Arthropoda, the metamerism is exhibited by 
a) Cestoda
b) Chordata
c) Mollusca
d) Acanthocephala
Answer : Chordata
 
Question : Which one of the following is an exotic Indian fish? 
a) Catla catla
b) Heteropneustes fossilis
c) Cyprinus caprio
d) Labeo rohita
Answer : Cyprinus caprio
 
Question : Pneumatic bones are expected to be found in 
a) pigeon
b) house lizard
c) frog’s tadpole
d) flying fish
Answer : pigeon
 
Question : The flightless bird Cassowary is found in 
a) Mauritius
b) Australia
c) New Zealand
d) Indonesia
Answer : Australia
 
Question : The long bones are hollow and connected by air passage. They are the characteristics of 
a) Aves
b) mammals
c) Reptilia
d) land vertebrates
Answer : Aves
 
Question : Which of the following is not found in birds?
a) Hindlimb
b) Pectoral girdle
c) Pelvic girdle
d) Forelimb
Answer : Forelimb
 
Question : In which of the following animal, post-anal tail is found?
a) Earthworm
b) Lower invertebrate
c) Scorpion
d) Snake
Answer : Snake
 
Question : In which of the following notochord is present in embryonic stage ? 
a) All chordates
b) Some chordates
c) Vertebrates
d) Non-chordates
Answer :
 
Question : Presence of gills in the tadpole of frog indicates that 
a) fishes were amphibious in the past
b) fishes evolved from frog like ancestors
c) frogs will have gills in future
d) frogs evolved from gilled ancestors
Answer : fishes were amphibious in the past
 
Question : A terrestrial animal must be able to 
a) excrete large amounts of water in urine
b) conserve water
c) actively pump salts out through the skin
d) excrete large amounts of salts in urine
Answer : conserve water
 
Question : Which one of the following characters is not typical of the class-Mammalia ? 
a) Seven cervical vertebrae
b) Thecodont dentition
c) Ten pairs of cranial nerves
d) Alveolar lungs
Answer : Ten pairs of cranial nerves
 
Question : Which one of the following is not a living fossil ? 
a) King crab
b) Sphenodon
c) Archaeopteryx
d) Peripatus
Answer : Archaeopteryx
 
Question : In which one of the following sets of animals do all the four give birth to young ones?
a) Lion, bat, whale, ostrich 
b) Platypus, penguin, bat, hippopotamus
c) Shrew, bat, cat, kiwi
d) Kangaroo, hedgehog, dolphin, loris
Answer : Kangaroo, hedgehog, dolphin, loris
 
Question : What is common between parrot, platypus and kangaroo ? 
a) Homeothermy
b) Toothless jaws
c) Functional post-anal tail
d) Oviparity
Answer : Homeothermy
 
Question : Which of the following pairs are correctly matched ? 
    Animals            Morphological features
(i) Crocodile      — 4-chambered heart
(ii) Sea urchin   — Parapodia
(iii) Obelia         — Metagenesis
(iv) Lemur         — Thecodont
a) (i), (iii) and (iv)
b) (ii), (iii) and (iv)
c) Only (i) and (iv)
d) Only (i) and (ii)
Answer : (i), (iii) and (iv)
 
Question : What is common to whale, seal and shark ?
a) Seasonal migration 
b) Thick subcutaneous fat
c) Convergent evolution
d) Homeothermy
Answer : Convergent evolution
 
Question : Which one of the following in birds, indicates their reptilian ancestry? 
a) Scales on their hind limbs
b) Four chambered heart
c) Two special chambers crop and gizzard in their digestive tract
d) Eggs with a calcareous shell
Answer : Scales on their hind limbs
 
Question : Which one of the following pairs of animals comprises ‘jawless fishes’ ? 
a) Lampreys and hag fishes
b) Guppies and hag fishes
c) Lampreys and eels
d) Mackerals and Rohu
Answer : Lampreys and hag fishes
 
Question : Crocodile and Penguin are similar to Whale and Dogfish in which one of the following features ? 
a) Lay eggs and guard them till they hatch.
b) Possess bony skeleton
c) Have gill slits at some stage
d) Possess a solid single stranded central nervous system.
Answer : Have gill slits at some stage
 
Question : What will you look for to identify the sex of the following ? 
a) Female Ascaris-Sharply curved posterior end
b) Male frog-A copulatory pad on the first digit of the hind limb.
c) Female cockroach-Anal cerci
d) Male shark-Claspers borne on pelvic fins
Answer : Male shark-Claspers borne on pelvic fins
Chapter 01 The Living World
CBSE Class 11 Biology The Living Organism MCQs
CBSE Class 11 Biology The Living World MCQs
Chapter 02 Biological Classification
CBSE Class 11 Biology Biological Classification MCQs
Chapter 03 Plant Kingdom
CBSE Class 11 Biology Plant Kingdom MCQs
Chapter 04 Animal Kingdom
CBSE Class 11 Biology Animal Kingdom MCQs
Chapter 05 Morphology of Flowering Plants
CBSE Class 11 Biology Morphology of Flowering Plants MCQs
Chapter 06 Anatomy of Flowering Plants
CBSE Class 11 Biology Anatomy of Flowering Plants MCQs
Chapter 07 Structural Organisation in Animals
CBSE Class 11 Biology Structural Organisation in Animals MCQs
Chapter 08 Cell The Unit of Life
CBSE Class 11 Biology Cell The Unit of Life MCQs
Chapter 09 Biomolecules
CBSE Class 11 Biology Biomolecules MCQs
Chapter 10 Cell Cycle and Cell Division
CBSE Class 11 Biology Cell Cycle and Cell Division MCQs
Chapter 11 Transport in Plants
CBSE Class 11 Biology Transport In Plants MCQs
Chapter 12 Mineral Nutrition
CBSE Class 11 Biology Mineral Nutrition MCQs
Chapter 13 Photosynthesis in Higher Plants
CBSE Class 11 Biology Photosynthesis in Higher Plants MCQs
Chapter 14 Respiration in Plants
CBSE Class 11 Biology Respiration in Plants MCQs
Chapter 15 Plant Growth and Development
CBSE Class 11 Biology Plant Growth and Development MCQs
Chapter 16 Digestion and Absorption
CBSE Class 11 Biology Digestion and Absorption MCQs
Chapter 17 Breathing and Exchange of Gases
CBSE Class 11 Biology Breathing and Exchange of Gases MCQs
Chapter 18 Body Fluids and Circulation
CBSE Class 11 Biology Body Fluids and Circulation MCQs
Chapter 19 Excretory Products and their Elimination
CBSE Class 11 Biology Excretory Products and Their Elimination MCQs
Chapter 20 Locomotion and Movement
CBSE Class 11 Biology Locomotion and Movement MCQs
Chapter 21 Neural Control and Coordination
CBSE Class 11 Biology Neural Control and Coordination MCQs
Chapter 22 Chemical Coordination and Integration
CBSE Class 11 Biology Chemical Coordination and Integration MCQs
More MCQ Questions Class 11 Biology
CBSE Class 11 Biology MCQs Set A
CBSE Class 11 Biology MCQs Set B
CBSE Class 11 Biology MCQs Set C
CBSE Class 11 Biology MCQs Set D
CBSE Class 11 Biology MCQs Set E
CBSE Class 11 Biology MCQs Set F
CBSE Class 11 Biology MCQs Set G
Tags
CBSE MCQ
CBSE Class 11 Biology MCQ
CBSE Class 11 Biology pdf MCQ
Class 11 Biology MCQ pdf
CBSE Class 11 Biology
Biology Class 11 MCQ
CBSE Class 11 Biology Chapter MCQ
MCQ for Class 11 Biology

MCQs for Chapter 4 Animal Kingdom Biology Class 11

Expert teachers of studiestoday have referred to NCERT book for Class 11 Biology to develop the Biology Class 11 MCQs. If you download MCQs with answers for the above chapter you will get higher and better marks in Class 11 test and exams in the current year as you will be able to have stronger understanding of all concepts. Daily Multiple Choice Questions practice of Biology will help students to have stronger understanding of all concepts and also make them expert on all critical topics. After solving the questions given in the MCQs which have been developed as per latest books also refer to the NCERT solutions for Class 11 Biology. We have also provided lot of MCQ questions for Class 11 Biology so that you can solve questions relating to all topics given in each chapter. After solving these you should also refer to Class 11 Biology MCQ Test for the same chapter.

Where can I download latest CBSE MCQs for Class 11 Biology Chapter 4 Animal Kingdom

You can download the CBSE MCQs for Class 11 Biology Chapter 4 Animal Kingdom for latest session from StudiesToday.com

Are the Class 11 Biology Chapter 4 Animal Kingdom MCQs available for the latest session

Yes, the MCQs issued by CBSE for Class 11 Biology Chapter 4 Animal Kingdom have been made available here for latest academic session

Where can I find CBSE Class 11 Biology Chapter 4 Animal Kingdom MCQs online?

You can find CBSE Class 11 Biology Chapter 4 Animal Kingdom MCQs on educational websites like studiestoday.com, online tutoring platforms, and in sample question papers provided on this website.

How can I prepare for Chapter 4 Animal Kingdom Class 11 MCQs?

To prepare for Chapter 4 Animal Kingdom MCQs, refer to the concepts links provided by our teachers and download sample papers for free.

Are there any online resources for CBSE Class 11 Biology Chapter 4 Animal Kingdom?

Yes, there are many online resources that we have provided on studiestoday.com available such as practice worksheets, question papers, and online tests for learning MCQs for Class 11 Biology Chapter 4 Animal Kingdom