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Chapter 7: Diversity in Living Organisms


Science

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Chapter 7: Diversity in Living Organisms

Class: IX

Exemplar sheet 7

Multiple Choice Questions

Question 1

Find out incorrect sentence

(a) Protista includes unicellular eukaryotic organisms

(b) Whittaker considered cell structure, mode and source of nutrition for classifying the organisms in five kingdoms

(c) Both Monera and Protista may be autotrophic and heterotrophic

(d) Monerans have well defined nucleus

Answer 1

(d)

Question 2

Which among the following has specialised tissue for conduction of water?

(i) Thallophyta

(ii) Bryophyta

(iii) Pteridophyta

(iv) Gymnosperms

(a) (i) and (ii)

(b) (ii) and (iii)

(c) (iii) and (iv)

(d) (i) and (iv)

Answer 2

(c)

 

Question 3

Which among the following produce seeds?

(a) Thallophyta

(b) Bryophyta

(c) Pteridophyta

(d) Gymnosperms

Answer 3

(d)

 

Question 4

Which one is a true fish?

(a) Jellyfish

(b) Starfish

(c) Dogfish

(d) Silverfish

Answer 4

(c)

 

Question 5

Which among the following is exclusively marine?

(a) Porifera

(b) Echinodermata

(c) Mollusca

(d) Pisces

Answer 5

(b)

Question 6

Which among the following have open circulatory system?

(i) Arthropoda

(ii) Mollusca

(iii) Annelida

(iv) Coelenterata

(a) (i) and (ii)

(b) (iii) and (iv)

(c) (i) and (iii)

(d) (ii) and (iv)

Answer 6

(a)



Question 7

In which group of animals, coelom is filled with blood?

(a) Arthropoda

(b) Annelida

(c) Nematoda

(d) Echinodermata

Answer 7

(a)

Question 8

Elephantiasis is caused by

(a) Wuchereria

(b) Pinworm

(c) Planarians

(d) Liver flukes

Answer 8

(a)

Question 9

Which one is the most striking or (common) character of the vertebrates?

(a) Presence of notochord

(b) Presence of triploblastic condition

(c) Presence of gill pouches

(d) Presence of coelom

Answer 9

(a)

Question 10

Which among the following have scales?

(i) Amphibians

(ii) Pisces

(iii) Reptiles

(iv) Mammals

(a) (i) and (iii)

(b) (iii) and (iv)

(c) (ii) and (iii)

(d) (i) and (ii)

Answer 10

(c)

Question 11

Find out the false statement

(a) Aves are warm blooded, egg laying and have four chambered heart

(b) Aves have feather covered body, fore limbs are modified as wing and breathe through lungs

(c) Most of the mammals are viviparous

(d) Fishes, amphibians and reptiles are oviparous   

Answer 11

(d)

 

Question 12

Pteridophyta do not have

(a) root

(b) stem

(c) flowers

(d) leaves

Answer 12

(c)

 

Question 13

Identify a member of porifera

(a) Spongilla

(b) Euglena

(c) Penicillium

(d) Hydra

Answer 13

(a)

 

Question 14

Which is not an aquatic animal?

(a) Hydra

(b) Jelly fish

(c) Corals

(d) Filaria

Answer 14

(d)

 

Question 15

Amphibians do not have the following

(a) Three chambered heart

(b) Gills or lungs

(c) Scales

(d) Mucus glands

Answer 15

(c)

Question 16

Organisms without nucleus and cell organelles belong to

(i) fungi

(ii) protista

(iii) cyano bacteria

(iv) archae bacteria

(a) (i) and (ii)

(b) (iii) and (iv)

(c) (i) and (iv)

(d) (ii) and (iii)

Answer 16

(b)



Question 17

Which of the following is not a criterion for classification of living organisms?

(a) Body design of the organism

(b) Ability to produce one’s own food

(c) Membrane bound nucleus and cell organelles

(d) Height of the plant

Answer 17

(d)

 

Question 18

The feature that is not a characteristic of protochordata?

(a) Presence of notochord

(b) Bilateral symmetry and coelom

(c) Jointed legs

(d) Presence of circulatory system

Answer 18

(c)

Question 19

The locomotory organs of Echinodermata are

(a) tube feet

(b) muscular feet

(c) jointed legs

(d) parapodia

Answer 19

(a)

 

Question 20

Corals are

(a) Poriferans attached to some solid support

(b) Cnidarians, that are solitary living

(c) Poriferans present at the sea bed

(d) Cnidarians that live in colonies

Answer 20

(d)

 

Question 21

Who introduced the system of scientific nomenclature of organisms

(a) Robert Whittaker

(b) Carolus Linnaeus

(c) Robert Hooke

(d) Ernst Haeckel

Answer 21

(b)

Question 22

Two chambered heart occurs in

(a) crocodiles

(b) fish

(c) aves

(d) amphibians

Answer 22

(b)

 

Question 23

Skeleton is made entirely of cartilage in

(a) Sharks

(b) Tuna

(c) Rohu

(d) None of these

Answer 23

(a)

 

Question 24

One of the following is not an Annelid

(a) Nereis

(b) Earthworm

(c) Leech

(d) Urchins

Answer 24

(d)

Question 25

The book Systema Naturae was written by

(a) Linnaeus

(b) Haeckel

(c) Whittaker

(d) Robert Brown

Answer 25

(a)

 

Question 26

Karl Von Linne was involved with which branch of science?

(a) Morphology

(b) Taxonomy

(c) Physiology

(d) Medicine

Answer 26

(b)

Question 27

Real organs are absent in

(a) Mollusca

(b) Coelenterata

(c) Arthropoda

(d) Echinodermata

Answer 27

(b)



Question 28

Hard calcium carbonate structures are used as skeleton by

(a) Echinodermata

(b) Protochordata

(c) Arthropoda

(d) Nematoda

Answer 28

(a)

 

Question 29

Differentiation in segmental fashion occurs in

(a) Leech

(b) Starfish

(c) Snails

(d) Ascaris

Answer 29

(a)

 

Question 30

In taxonomic hierarchy family comes between

(a) Class and Order

(b) Order and Genus

(c) Genus and Species

(d) Division and Class

Answer 30

(b)

 

Question 31

5-Kingdom classification has given by

(a) Morgan

(b) R. Whittaker

(c) Linnaeus

(d) Haeckel

Answer 31

(b)

Question 32

Well defined nucleus is absent in

(a) blue green algae

(b) diatoms

(c) algae

(d) yeast

Answer 32

(a)

Question 33

The ‘Origin of Species’ is written by

(a) Linnaeus

(b) Darwin

(c) Hackel

(d) Whittaker

Answer 33

(b)

 

Question 34

Meena and Hari observed an animal in their garden. Hari called it an insect while Meena said it was an earthworm. Choose the character from the following which confirms that it is an insect.

(a) Bilateral symmetrical body

(b) Body with jointed legs

(c) Cylindrical body

(d) Body with little segmentation

Answer 34

(b)

Short Answer Questions

Question 35

Write true (T) or false (F)

(a) Whittaker proposed five kingdom classification.

(b) Monera is divided into Archaebacteria and Eubacteria.

(c) Starting from Class, Species comes before the Genus.

(d) Anabaena belongs to the kingdom Monera.

(e) Blue green algae belongs to the kingdom Protista.

(f) All prokaryotes are classified under Monera.

Answer 35

(a) T   (b) T   (c) F   (d) T   (e) F  (f) T

Question 36

Fill in the blanks

(a) Fungi shows———mode of nutrition.

(b) Cell wall of fungi is made up of ———.

(c) Association between blue green algae and fungi is called as———.

(d) Chemical nature of chitin is ———.

(e) ———has smallest number of organisms with maximum number of similar characters

(f) Plants without well differentiated stem, root and leaf are kept in ———.

(g) ———are called as amphibians of the plant kingdom.

Answer 36

(a) saprophytic   (b) chitin   (c) lichens   (d) carbohydrate

(e) species   (f) thallophyta    (g) bryophytes

 



Question 37

You are provided with the seeds of gram, wheat, rice, pumpkin, maize and pea. Classify them whether they are monocot or dicot.

Answer 37

Gram—dicot  Wheat—monocot   Rice—monocot,

Pumpkin—dicot    Maize—monocot   Pea—dicot

 

Question 38

Match items of column (A) with items of column (B)

(A)  (B)

(a) Naked seed   (A) Angiosperms

(b) Covered seed   (B) Gymnosperms

(c) Flagella   (C) Bryophytes

(d) Marchantia   (D) Euglena

(e) Marsilea   (E) Thallophyta

(f) Cladophora   (F) Pteridophyta

(g) Penicillium   (G) Fungi

Answer 38

(a)—B;  (b)—A;  (c)—D;    (d)—C;    (e)—F;    (f)—E,  (g)—G

.

Question 39

Match items of column (A) with items of column (B)

(A)   (B)

(a) Pore bearing animals   (A) Arthropoda

(b) Diploblastic   (B) Coelenterata

(c) Metameric segmentation   (C) Porifera

(d) Jointed legs   (D) Echinodermata

(e) Soft bodied animals   (E) Mollusca

(f) Spiny skinned animals   (F) Annelida

Answer 39

(a)—C;   (b)—B;  (c)—F;   (d)—A;   (e)—E;   (f)—D

Question 40

Classify the following organisms based on the absence/presence of true coelom (i.e., acoelomate, pseudocoelomate and coelomate)

Spongilla,   Sea anemone,   Planaria,  Liver fluke   Wuchereria,   Ascaris, Nereis,  Earthworm,  Scorpion,    Birds,    Fishes,   Horse.

Answer 40

Spongilla —Acoelomate

Sea anemone—Acoelomate

Planaria—Acoelomate

Liver fluke—Acoelomate

Wuchereria—Pseudocoelomate

Ascaris—Psudocoelomate

Nereis—Coelomate

Scorpion—Coelomate

Earthworm—Coelomate

Birds, Fishes and Horse—Coelomate

 

Question 41

Endoskeleton of fishes are made up of cartilage and bone; classify the following fishes as cartilagenous or bony

Torpedo,  Sting ray,  Dog fish,

Rohu,   Angler fish,   Exocoetus.

Answer 41

Torpedo—Cartilagenous,   Sting ray—Cartilagenous,   Dog fish— Cartilagenous,

Rohu—Bony,  Angler fish— Cartilagenous  Exocoetus—bony.

Question 42

Classify the following based on number of chambers in their heart. Rohu, Scoliodon, Frog, Salamander, Flying lizard, King Cobra, Crocodile, Ostrich, Pigeon, Bat, Whale

Answer 42

Rohu, Scoliodon— 2 chambered.

Frog, Salamander, Flying lizard, King Cobra—3 chambered.

Crocodile, Ostrich, Pigeon, Bat, Whale—4 chambered.

Question 43

Classify Rohu, Scolidon, Flying lizard, King Kobra, Frog, Salamander, Ostrich, Pigeon, Bat, Crocodile and Whale into the cold blooded/warm blooded animals.

Answer 43

Cold blooded— Rohu, Scoliodon, Frog, Salamander, Flying Lizard, King Cobra, Crocodile,

Warm blooded— Ostrich, Pigeon, Bat, Whale.



Question 44

Name two egg laying mammals.

Answer 44

(i) Platypus (ii) Echidna

Question 45

Fill in the blanks

(a) Five kingdom classification of living organisms is given by ———.

(b) Basic smallest unit of classification is ———.

(c) Prokaryotes are grouped in Kingdom ———.

(d) Paramecium is a protista because of its ———.

(e) Fungi do not contain ———.

(f) A fungus ——— can be seen without microscope.

(g) Common fungi used in preparing the bread is ———.

(h) Algae and fungi form symbiotic association called ———.

Answer 45

(a) Robert Whittaker

(b) Species

(c) Monera

(d) Eukaryotic unicellular organisms

(e) Chlorophyll

(f) Mushroom

(g) Yeast

(h) Lichens

Question 46

Give True (T) and False (F)

(a) Gymnosperms differ from Angiosperms in having covered seed.

(b) Non flowering plants are called Cryptogamae.

(c) Bryophytes have conducting tissue.

(d) Funaria is a moss.

(e) Compound leaves are found in many ferns.

(f) Seeds contain embryo.

Answer 46

(a) False   (b) True  (c) False   (d) True  (e) True   (f) True

Question 47

Give examples for the following

(a) Bilateral, dorsiventral symmetry is found in———.

(b) Worms causing disease elephantiasis is———.

(c) Open circulatory system is found in———where coelomic cavity is filled with blood.

(d) ———are known to have pseudocoelom.

Answer 47

(a) Liver fluke

(b) Filarial worm

(c) Arthropods

(d) Nematodes

Question 48

Label a,b,c and d. given in Fig. 7.1 Give the function of (b)

  ncert science class 9 chapter 7

Answer 48

(a) Dorsal fin

(b) Caudal fin

(c) Pelvic fin

(d) Pectoral fin

Function of Caudal fin–Caudal fin helps in streamlined movement in water.



Question 49

Fill in the boxes given in Fig. 7.2 with appropriate characteristics/plant group (s)

  ncert science class 9 chapter 7

Answer 49

(a) Thallophyta

(b) Without specialized vascular tissue

(c) Pteridophyta

(d) Phanerogams

(e) Bear naked seeds

(f) Angiosperms

(g) Have seeds with two cotyledons

(h) Monocots

Long Answer Questions

 

Question 50

Write names of few thallophytes. Draw a labelled diagram of Spirogyra.

Answer 50

Ulothrix, Spirogyra, Cladophara, Ulva and Chara,

  ncert science class 9 chapter 7

Question 51

Thallophyta, bryophyta and pteridophyta are called as ‘Cryptogams’. Gymnosperms and Angiosperms are called as ‘phanerogams’. Discuss why? Draw one example of Gymnosperm.

Answer 51

The Thallophyta, bryophyta and pteridophyta are called as ‘Cryptogams’ because the reproductive organs of these groups are inconspicuous or hidden. Seeds are absent. On the other hand ‘Phanerogams’ include gymnosperms and angiosperms which have well differentiated reproductive tissue and the embryo with stored food. Embryo develops into seed.

  ncert science class 9 chapter 7

Question 52

Define the terms and give one example of each

(a) Bilateral symmetry

(b) Coelom

(c) Triploblastic

Answer 52

(a) The left and right halves of the body have the same design, eg, liver fluke

(b) Coelom is the internal body cavity between visceral organs and body wall in which well developed organs can be accommodated, eg. butterfly

(c) Animals having three layers of cells from which differentiated tissue can be made are called triploblastic, eg. star fish

  ncert science class 9 chapter 7

 

Question 53

You are given leech, Nereis, Scolopendra, prawn and scorpion; and all have segmented body organisation. Will you classify them in one group? If no, give the important characters based on which you will separate these organisms into different groups.

Answer 53

All organisms given in the question do not belong to same group. Leech and Nereis belong to phylum annelida because they have metamerically segmented body i.e., body is divided into many segments internally by septa. Body segments are lined up one after the other from head to tail. But Scolopendra, prawn and scorpion belong to phylum arthropoda as these have jointed legs and open circulating system.

Question 54

Which organism is more complex and evolved among Bacteria, Mushroom and Mango tree. Give reasons.

Answer 54

Hint— Mango tree is more complex  and evolved than the other two because, it is autotrophic, eukaryotic, terrestrial sporophyte with covered seed. The bacteria is unicellular prokaryote and fungi are the heterotrophic, simple thallophyte with no tissue systems.

Question 55

Differentiate between flying lizard and bird. Draw the diagram.

Answer 55

Flying lizard belongs to  reptiles. They are cold blooded, and their body is covered with scales. Their heart is three chambered. Birds belongs to group aves. They are warm blooded and body is covered with feathers, their forelimbs modified as wings and they heart is four chambered.

  ncert science class 9 chapter 7

Question 56

List out some common features in cat, rat and bat.

Answer 56

Bat, rat and cat belong to class mammalia and have following common features

(a) All have notochord at some stage of life cycle.

(b) All are warm blooded.

(c) All have four chambered heart.

(d) All have skin covered with hair and with sweat and oil glands.

 

Question 57

Why do we keep both snake and turtle in the same class?

Answer 57

Hint— Because both are (1) cold blooded (2) have scales (3) breathe through lungs

  (4) have three chambered heart, and (5) they lay eggs with tough covering.

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