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

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

Name the various classes of chordates with two examples.

Solution 2

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 3

Write important characters of chordates? How do they differ from non-chordates?

Solution 3

Question 4

Give four important characters of mammals.

Solution 4

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.

Question 5

What is classification of living organism? How is it important?

Solution 5

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 6

Describe the Binomial system of classification.

Solution 6

Question 7

What is taxonomy?

Solution 7

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

Question 9

Name the various phyla of non-chordates with two examples.

Solution 9

Chapter - Exercise

Solution 1

Solution 2

Solution 3

Chapter 13 - Diversity of Life and Classification Exercise 118

Question 1

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 1

(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 2

How do gymnosperms and angiosperms differ?

Solution 2

Question 3

Give two examples each of bryophyta and pteridophyta.

Solution 3

Bryophyta - Liverwort and Moss.
Pteridophyta - Fern and Horsetail.

Question 4

Give the name of two animals that belong to phylum echinodermata.

Solution 4

Antedon (Sea lily) and Asterias (Star fish ).

Question 5

Write the name of a mammal who lives in water.

Solution 5

Whale

Question 6

Name any two animals which possess compound eyes.

Solution 6

Cockroach, crab

Question 7

Write name of any poikilothermic animal.

Solution 7

Frog

Question 8

Write the name of oviparous mammal.

Solution 8

Echidna

Question 9

Write zoological names of earthworm and roundworm.

Solution 9

Earthworm - Pheretima posthuma and
Roundworm - Ascaris

Question 10

Solution 10

Question 11

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 11

(a) Arthropoda
(b) Porifera
(c) Mollusca

Question 12

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 12

(a) Protozoa
(b) Mollusca
(c) Annelida

Question 13

Give two examples of each of the following:
(a) Echinodermata
(b) Pisces
(c) Platyhelminthes
(d) Nemathelminthes
(e) Annelida
(f) Arthropoda

Solution 13

(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 14

Name the phyla to which following animals belong:
(a) Leech
(b) Hydra
(c) Scorpion
(d) Starfish

Solution 14

(a) Annelida
(b) Coelenterata
(c) Arthropoda
(d) Echinodermata

Question 15

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 15

(a) Flame cells
(b) Nemathelminthes
(c) Annelida
(d) Porifera
(e) Chordata

Question 16

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 16

(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