CBSE Class 9 Science Diversity in Living Organisms Assignment Set A

Question : Name the branch of the biology that deals with the classification.

Question :   Who was the first to propose the two-kingdom system of classification?

Question :   Who proposed three-kingdom classification?

Question :   What is meant by triploblastic?

Question :   What is haemocoel ?

Question :   Name the person who has given the five-kingdom classification.

Question :   Which is the largest phylum of animal kingdom?

Question :   What is the function of canal system in sponges?

Question :   What are Gymnosperms?

Question :   What is the purpose of classification?

Question :   What do you mean by evolution?

Question :   What are the bases due to which plants and animals are classified as different categories?

Question : What are the four main characteristics of chordates?

Question :   Draw the hierarchy of the classification?

Question :   Give the names of different groups of Plant Kingdom.

Question :   Differentiate between Poriferans and Coelentrates.

Question :   Give two exampes of Bryophytes and Pteridophytes.

Question :   Define advantage of using scientific name instead of common name?

Question :   Define the main characteristics of Vertebrates.

Question :   Bat can fly still it is placed in mammals. Why?

Question :   Why thallophytes, bryophytes and pteridophytes are called ‗cryptogams‘?

Question :   Show the diagrammatic representation of five-kingdom classification.

Question :   Draw a flowchart to depict classification of Kingdom Plantae.

Question :   a) Identify four features possessed by all Chordates.

       b) In which class would you place any organism which has:

       i. a scaly exoskeleton and a bony endoskeleton.

       ii. a scaly exoskeleton and lay eggs outside water.

Question :   Give one point of difference between: i) Bilateral and radial symmetry ii) Notochord and nerve cord

Question : (a) Name the locomotary organs of echinoderms.  

        (b) Distinguish between- 1. Tapeworm and earthworm 2. Mite and termite

Question : Point out differences between the following:

       (a) Bony and cartilaginous fishes.

       (b) Bilateral and radial symmetry.

       (c) Notochord and nerve chord.

Exam Questions NCERT Class 9 Science Chapter 7 Diversity In Living Organisms

Question : Write the general characteristics of kingdom – fungi.
Answer :
(1) The fungi are the unique heterotrophic organisms either saprophytic or parasitic or symbiotic.
(2) The fungi are cosmopolitan in distribution and occur in air, water, soil and on plants and animals.
(3) They are unicellular (yeast) or multicellular, eukaryotic organisms.
(4) Fungi are filamentous and the body consisting of long, slender thread-like structures called hyphae, may be coenocytes hyphane or septate hyphore.
(5) The network of hyphae in fungi is called mycelium.
(6) The cell walls of fungi are composed of chitin and polysaccharides.
(7) Reproduction in fungi can take place by three methods :
(a) Vegetative
(b) Asexual
(c) Sexual reproduction.

Question : What is the basis for classification of organisms?
Answer :  The basis for classification are :
(a) Presence or absence of nucleus.
(b) Organisms are unicellular, or multicellular.
(c) Autotrophic mode of nutrition or heterotrophic mode of nutrition.
(d) Of the organisms that perform photosynthesis (plants), their level, or organisation of the body.
(e) Of the animals, how does the individuals body develop and organise its different parts.

Question : A group of students had gone for educational trip clicked photographs of endangered plants. These photographs were used by the school laboratory to study these plants.
(i) Name two endangered plants.
(ii) Name any one medicinal plant and give its medicinal use.
Answer :
(i) Two endangered plants are Euphrasia and Ubnus rubra.
(ii) Aloe-vera : Juice of Aloe-vera is used in case of indigestion, treating skin infection, etc.

Question : Mention the main criteria of R.H. Whittaker’s classification.
Answer :  (1) Cell structure;
(2) Thallus organization;
(3) Mode of nutrition;
(4) Reproduction;
(5) Phlogenetic relationships were considered by Whittaker.

Question : Name the phylum of the following organisms, whose exclusive characteristics is given below :
(a) Hollow bones
(b) Jointed appendages
(c) Flatworm
(d) Round worms, parasitic
(e) Soft body, muscular marine animal
(f) Radially symmetrical, spiny skin.
Answer :  (a) Phylum chordata, subphylum—vertebrata,

Question : Give the characteristic features of Echinodermata.
Answer :  (a) Spikes present on skin.
(b) Free living, marine animals.
(c) Triploblastic and have a coelomic cavity.
(d) Have a peculiar water driven tube system used for moving around.
(e) Have hard calcium carbonate structure that is used as a skeleton.
Examples : Starfish, sea-urchin.

Question : Give specific characteristics of Coelenterate.
Answer :
(a) Water living animals.
(b) Body is made of two layers of cells.
(c) Some of them live in colonies (corals), while others have solitary life-span (Hydra).
(d) Body cavity present.
(e) Radially symmetrical.

Question : Name the phylum of the following animals :
(a) Tapeworm
(b) Starfish
(c) Jellyfish
(d) Octopus
Answer :
(a) Tapeworm — Platyhelminthes
(b) Starfish — Echinodermata
(c) Jellyfish — Coelenterata
(d) Octopus — Mollusca

Question : Name the 5 kingdoms of living organisms.
Answer :
1. Monera;
2. Protista;
3. Fungi, mycota;
4. Plantae; Metaphyto;
5. Animalia Metazoa.

Question : Name the kingdom which includes eukaryotic heterotrophic organisms.
Answer :  Kingdom Mycota (Fungi).

Question : Name unicellular fungi.
Answer :  Yeast.

Question : Who proposed the classification of organisms into 5 kingdoms?
Answer :  Robert H. Whittaker proposed the classification of organisms into 5 kingdoms in 1959.

Question : Name the appendages used for movement by organism belonging to Protista kingdom.
Answer :  (a) Paramecium – Cilia
(b) Euglena – Flagella
(c) Amoeba – Pseudopodia

Question : Give simple classification of plant kingdom.
Answer :  Kingdom plantae is divided in following divisions :
(a) Thallophyta
(b) Bryophyta
(c) Pteridophyta
(d) Phanerogams
(i) Gymnosperm
(ii) Angiosperm – (1) Monocots (2) Dicots

Question : Who proposed the two kingdom classification?
Answer :  Carolus Linnaeus proposed the two kingdom classification.

Question : What is lichen?
Answer :  Lichen is the symbiotic association of fungi and bluegreen algae. 

Excercise