FRANK Solutions for Class 9 Biology Chapter 13 - Diversity of Life and Classification

Understand the variety of living organisms with TopperLearning’s Frank Solutions for ICSE Class 9 Biology Chapter 13 Diversity of Life and Classification. Learn the difference between non-chordates and chordates in this chapter. Also, practise short answer questions by understanding the characteristics of animals such as whales, cockroaches, starfish and jellyfish.

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Chapter 13 - Diversity of Life and Classification Exercise 117

Question 1
What do you understand by diversity of life?
Solution 1
Diversity refers to the variety of living organisms found within a given ecosystem, biome, or on an entire planet.
Question 2
What is classification of living organism? How is it important?
Solution 2
The method of arranging organisms into series of groups on the basis of similarities and differences is called classification.
Classification is important in the following ways:
(i) It makes the study of a wide variety of organisms easy.
(ii) It gives us an overall picture of all the life-forms.
(iii) It helps us to understand the interrelationships among different groups of organisms.
(iv) It forms a base for the development of other biological sciences.
Question 3
Describe the Binomial system of classification.
Solution 3
Frank Solutions Icse Class 9 Biology Chapter - Diversity Of Life And Classification
Question 4
What is taxonomy?
Solution 4
Taxonomy is the study of the theory, practice and rules of classification of living and extinct organisms.
Question 8
Write down a flow chart showing subdivisions of kingdom Animalia.
Solution 8
Frank Solutions Icse Class 9 Biology Chapter - Diversity Of Life And Classification
Question 9
Name the various phyla of non-chordates with two examples.
Solution 9
Frank Solutions Icse Class 9 Biology Chapter - Diversity Of Life And Classification
Question 10
Name the various classes of chordates with two examples.
Solution 10
The various classes of Chordata are:
(i) Pisces - Labeo (Rohu), Scoliodon (Dog fish)
(ii) Amphibia - Rana (Frog), Hyla (Tree frog )
(iii) Reptilia - Kanchuga (Tortoise), Naja naja ( Cobra)
(iv) Aves - Columba (Pigeon), Pavo (Peacock)
(v) Mammalia - Elephas ( Elephant), Funambulas (Squirrel)
Question 11
Write important characters of chordates? How do they differ from non-chordates?
Solution 11
Frank Solutions Icse Class 9 Biology Chapter - Diversity Of Life And Classification
Question 12
Give four important characters of mammals.
Solution 12
Characters of mammals are:
(i) The females of this class are provided with mammary glands which produces milk to feed the young one.
(ii) Body usually covered with hair, spines, scales, nail, hoof or horn.
(iii) External ear or pinna is well-developed.
(iv) They are warm-blooded.

Chapter - Exercise

Solution
Solution
Solution

Chapter 13 - Diversity of Life and Classification Exercise 118

Question 13
Write two main characters of the following animals and name the phylum they belong to:
(a) Starfish
(b) Whale
(c) Jelly fish
(d) Cockroach
Solution 13
(a) Starfish belongs to phylum Echinodermata.
Two characters of starfish are:
(i) Spines found on the body which is covered by calcareous plates.
(ii) Body is star shaped with five radiating areas called ambulacra with inter-ambulacra in between.
(b) Whale belongs to phylum Chordata.
Two characters of whale are:
(i) They are warm blooded marine animals.
(ii) Heart is completely four-chambered.
(c) Jelly fish belongs to phylum Coelenterata.
Two characters of jelly fish are:
(i) Body diploblastic having outer epidermis and inner gastrodermis with gelatinous mesoglea.
(ii) Tentacles are present around the mouth.
(d) Cockroach belongs to phylum Arthropoda.
Two characters of cockroach are:
(i) They have jointed legs.
(ii) Their exoskeleton is made up of chitinous cuticle which is shed from time to time.
Question 14
How do gymnosperms and angiosperms differ?
Solution 14
Frank Solutions Icse Class 9 Biology Chapter - Diversity Of Life And Classification
Question 15
Give two examples each of bryophyta and pteridophyta.
Solution 15
Bryophyta - Liverwort and Moss.
Pteridophyta - Fern and Horsetail.
Question 16
Give the name of two animals that belong to phylum echinodermata.
Solution 16
Antedon (Sea lily) and Asterias (Star fish ).
Question 17
Write the name of a mammal who lives in water.
Solution 17
Whale
Question 18
Name any two animals which possess compound eyes.
Solution 18
Cockroach, crab
Question 19
Write name of any poikilothermic animal.
Solution 19
Frog
Question 20
Write the name of oviparous mammal.
Solution 20
Echidna
Question 21
Write zoological names of earthworm and roundworm.
Solution 21
Earthworm - Pheretima posthuma and
Roundworm - Ascaris
Question 22
Frank Solutions Icse Class 9 Biology Chapter - Diversity Of Life And Classification
Solution 22
Frank Solutions Icse Class 9 Biology Chapter - Diversity Of Life And Classification
Question 23
Which group of animals have following characteristics:
(a) Body segmented, jointed appendages and compound eyes.
(b) Multicellular body not organized into tissues.
(c) Body soft, covered by mantle and a calcareous shell.
Solution 23
(a) Arthropoda
(b) Porifera
(c) Mollusca
Question 24
On the basis of characteristics given below, name the phyla:
(a) Unicellular, microscopic animals.
(b) Soft bodies, muscular foot, calcareous shell and presence of mantle.
(C) Body cylindrical, segmented, coelomate.
Solution 24
(a) Protozoa
(b) Mollusca
(c) Annelida
Question 25
Give two examples of each of the following:
(a) Echinodermata
(b) Pisces
(c) Platyhelminthes
(d) Nemathelminthes
(e) Annelida
(f) Arthropoda
Solution 25
(a) Asterias (Star fish ), Echinus (Sea-urchin)
(b) Scoliodon (Dog fish), Labeo (Rohu)
(c) Fasciola ( Liver fluke), Taenia solium (Tapeworm)
(d) Ascaris ( Roundworm), Wuchereria (Filarial worm )
(e) Pheretima (Earthworm), Hirudinaria ( Leech )
(f) Palemon (Prawn), Periplaneta (Cockroach)
Question 26
Name the phyla to which following animals belong:
(a) Leech
(b) Hydra
(c) Scorpion
(d) Starfish
Solution 26
(a) Annelida
(b) Coelenterata
(c) Arthropoda
(d) Echinodermata
Question 27
Fill in the blanks:
(a) The excretory organs of platyhelminthes are ______.
(b) Ascaris is the example of phylum ______.
(c) Nephridia are the excretory organs of ______.
(d) Bath sponge belongs to phylum ______.
(e) Dog fish belongs to phylum ______.
Solution 27
(a) Flame cells
(b) Nemathelminthes
(c) Annelida
(d) Porifera
(e) Chordata
Question 28
Each question has four options. Choose the correct answer:
(i) Mosquito is included in insects because
(a) three pairs of legs are present.
(b) four pairs of legs are present.
(c) body is divisible into cephalothorax and abdomen.
(d) two pairs of legs are present.
(ii) Jelly-fish is classified in the phylum
(a) coelentrata
(b) mollusca
(c) pisces
(d) arthropoda
(iii) The animal of phylum mollusca is
(a) scorpion
(b) Hydra
(c) octopus
(d) earthworm
(iv) The animal of phylum protozoa is
(a) earthworm
(b) housefly
(c) paramoecium
(d) sponge
(v) The animal of class pisces is
(a) jelly-fish
(b) starfish
(c) hippocampus
(d) whale
(vi) Which of the following is not a helminth parasite?
(a) Scorpion
(b) Wuchereria
(c) Ascaris
(d) Oxyuris
(vii) Whittaker is famous
(a) for two kingdom classification.
(b) for five kingdom classification.
(c) for four kingdom classification.
(d) to tell the differences between bacteria and blue-green algae.
(viii) Protista is the link between
(a) prokaryotic and multicellular eukaryotic cell
(b) virus and bacteria
(c) bacteria and green algae
(d) dianoflagellates and zooflagellates
(ix) Multicellular producers are
(a) protista
(b) animal
(c) fungi
(d) plant
(x) 'Systema naturae' has been written by
(a) John Ray
(b) Darwin
(c) C. Linnaeus
(d) Theophrastus
(xi) Binomial Nomenclature was proposed by
(a) Benthum Hooker
(b) Hutchinson
(c) Englar and Prantle
(d) Carolus Linnaeus
Solution 28
(i) (a) three pairs of legs are present.
(ii) (a) coelentrata
(iii) (c) octopus
(iv) (c) paramoecium
(v) (c) hippocampus
(vi) (a) Scorpion
(vii) (b) for five kingdom classification
(viii) (a) prokaryotic and multicellular eukaryotic cell
(ix) (d) plant
(x) (d) C. Linnaeus
(xi) (c) Carolus Linnaeus