Diversity in Living Organisms Class 9 Science Important Questions

Students can read the important questions given below for Diversity in Living Organisms Class 9 Science. All Diversity in Living Organisms Class 9 Notes and questions with solutions have been prepared based on the latest syllabus and examination guidelines issued by CBSE, NCERT and KVS. You should read all notes provided by us and Class 9 Science Important Questions provided for all chapters to get better marks in examinations. Science Question Bank Class 9 is available on our website for free download in PDF.

Important Questions of Diversity in Living Organisms Class 9

Question. 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)

Question. Which one is a true fish?
(a) Jellyfish
(b) Starfish
(c) Dogfish
(d) Silverfish

Question. Elephantiasis is caused by
(a) Wuchereria
(b) Pinworm
(c) Planarians
(d) Liver flukes

Question. Which among the following is exclusively marine?
(a) Porifera
(b) Echinodermata
(c) Mollusca
(d) Pisces

Question. 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

Question. In which group of animals, coelom is filled with blood?
(a) Arthropoda
(b) Annelida
(c) Nematoda
(d) Echinodermata

Question. 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

Question. 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

Question. Which among the following produce seeds?
(a) Thallophyta
(b) Bryophyta
(c) Pteridophyta
(d) Gymnosperms

Question. Pteridophyta do not have
(a) root
(b) stem
(c) flowers
(d) leaves

Question. Hard calcium carbonate structures are used as skeleton by
(a) Echinodermata
(b) Protochordata
(c) Arthropoda
(d) Nematoda

Question. Identify a member of porifera
(a) Spongilla
(b) Euglena
(c) Penicillium
(d) Hydra

Question. Organisms without nucleus and cell organelles belong to
(i) fungi
(ii) protista
(iii) Cyanobacteria
(iv) archaebacteria
(a) (i) and (ii)
(b) (iii) and (iv)
(c) (i) and (iv)
(d) (ii) and (iii)

Question. Which is not an aquatic animal?
(a) Hydra
(b) Jelly fish
(c) Corals
(d) Filaria

Question. 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)

Question. Amphibians do not have the following
(a) Three chambered heart
(b) Gills or lungs
(c) Scales
(d) Mucus glands

Question. 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)

Question. 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

Question. Who introduced the system of scientific nomenclature of organisms
(a) Robert Whittaker
(b) Carolus Linnaeus
(c) Robert Hooke
(d) Ernst Haeckel

Question. 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

Question. The ‘Origin of Species’ is written by
(a) Linnaeus
(b) Darwin
(c) Hackel
(d) Whittaker

Question. Skeleton is made entirely of cartilage in
(a) Sharks
(b) Tuna
(c) Rohu
(d) None of these

Question. The locomotory organs of Echinodermata are
(a) tube feet
(b) muscular feet
(c) jointed legs
(d) parapodia

Question. One of the following is not an Annelid
(a) Nereis
(b) Earthworm
(c) Leech
(d) Urchins

Question. 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

Question. The book Systema Naturae was written by
(a) Linnaeus
(b) Haeckel
(c) Whittaker
(d) Robert Brown

Question. Two chambered heart occurs in
(a) crocodiles
(b) fish
(c) aves
(d) amphibians

Question. 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

Question. Karl Von Linne was involved with which branch of science?
(a) Morphology
(b) Taxonomy
(c) Physiology
(d) Medicine

Question. Differentiation in segmental fashion occurs in
(a) Leech
(b) Starfish
(c) Snails
(d) Ascaris

Question. 5-Kingdom classification has given by
(a) Morgan
(b) R. Whittaker
(c) Linnaeus
(d) Haeckel

Question. Real organs are absent in
(a) Mollusca
(b) Coelenterata
(c) Arthropoda
(d) Echinodermata

Question. Well defined nucleus is absent in
(a) blue green algae
(b) diatoms
(c) algae
(d) yeast

Question. In taxonomic hierarchy family comes between
(a) Class and Order
(b) Order and Genus
(c) Genus and Species
(d) Division and Class

Write true (T) or false (F)

Question. Whittaker proposed five kingdom classification.

Question. Monera is divided into Archaebacteria and Eubacteria.

Question. Starting from Class, Species comes before the Genus.

Question. Anabaena belongs to the kingdom Monera.

Question. Blue green algae belongs to the kingdom Protista.

Question. All prokaryotes are classified under Monera. 

Question. Gymnosperms differ from Angiosperms in having covered seed.

Question. Non-flowering plants are called Cryptogamae.

Question. Bryophytes have conducting tissue.

Question. Funaria is a moss.

Question. Compound leaves are found in many ferns.

Question. Seeds contain embryo.

Fill in the blanks

Question. Fungi shows __________ mode of nutrition.

Question. Cell wall of fungi is made up of __________.

Question. Association between blue green algae and fungi is called as __________.

Question. Chemical nature of chitin is __________.

Question. Five kingdom classification of living organisms is given by __________.

Question. Basic smallest unit of classification is __________.

Question. Prokaryotes are grouped in Kingdom __________.

Question. Paramecium is a protista because of its __________.

Question. Fungi do not contain __________.

Question. A fungus __________ can be seen without microscope.

Question. Common fungi used in preparing the bread is __________.

Question. Algae and fungi form symbiotic association called __________.

Give examples for the following

Question. Bilateral, dorsiventral symmetry is found in __________.

Question. Worms causing disease elephantiasis is __________.

Question. Open circulatory system is found in __________ where coelomic cavity is filled with blood.

Question.__________ are known to have pseudocoelom.

Question. __________ has smallest number of organisms with maximum number of similar characters.

Question. Plants without well differentiated stem, root and leaf are kept in __________.

Question. __________ are called as amphibians of the plant kingdom.

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

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

Question. Classify the following organisms based on the absence/presence of true coelom (i.e., acoelomate, pseudocoelomate and coelomate) Spongilla, Sea anemone, Planaria, Liver flukes, Wuchereria, Ascaris, Nereis, Earthworm, Scorpion, Birds, Fishes, Horse.
Answer. 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. You are provided with the seeds of gram, wheat, rice, pumpkin, maize and pea. Classify them whether they are monocot or dicot.
Answer. Gram — dicot
Wheat — monocot
Rice — monocot
Pumpkin — dicot
Maize — monocot
Pea — dicot

Question. 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. Rohu, Scoliodon— 2 chambered. Frog, Salamander, Flying lizard, King Cobra—3 chambered. Crocodile, Ostrich, Pigeon, Bat, Whale—4 chambered.

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

Question. Classify Rohu, Scoliodon, Flying lizard, King Kobra, Frog, Salamander, Ostrich, Pigeon, Bat, Crocodile and Whale into the cold blooded/warm blooded animals.
Answer. Cold blooded—Rohu, Scoliodon,Frog, Salamander, Flying Lizard, King Cobra, Crocodile, Warm blooded— Ostrich, Pigeon, Bat, Whale.

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

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

Question. Which organism is more complex and evolved among Bacteria, Mushroom and Mango tree. Give reasons.
Answer. Mango tree is more complex and evolved because, it is eukaryotic, autotrophic, terrestrial sporophyte with covered seed. The bacteria is unicellular prokaryote and fungi are the heterotrophic, simple thallophyte with no tissue systems.

Question. Name two egg laying mammals.
Answer. (i) Platypus (ii) Echidna

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

Answer. (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. 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. Torpedo—Cartilagenous
Sting ray—Cartilagenous
Dog fish—Cartilagenous
Rohu—Bony
Angler fish—Cartilagenous
Exocoetus—bony.

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

Answer. (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

Question. 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. 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. Write names of few thallophytes. Draw a labelled diagram of Spirogyra.
Answer. Ulothrix, Spirogyra, Cladophara, Ulva and Chara,

Question. Define the terms and give one example of each
(a) Bilateral symmetry
(b) Coelom
(c) Triploblastic
Answer. (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

Question. List out some common features in cat, rat and bat.
Answer. 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. Differentiate between flying lizard and bird. Draw the diagram.
Answer. Flying lizard belongs to group reptiles and characterised as cold blooded, body covered with scales and having three chambered heart, while birds belong to group aves and have characteristics of being warm blooded, having feather covered body, forelimbs modified as wings and having four chambered heart.

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