CBSE Class 9 Biology Diversity In Living Organisms Worksheet Set 04

Fill in the blanks

Question: Fungi shows __________ mode of nutrition.
Answer: saprotrophic

Question: Cell wall of fungi is made up of __________.
Answer: chitin

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

Question: Chemical nature of chitin is __________.
Answer: carbohydrate

Question: Five kingdom classification of living organisms is given by __________.
Answer: Robert Whittaker

Question: Basic smallest unit of classification is __________.
Answer: Species

Question: Prokaryotes are grouped in Kingdom __________.
Answer: Monera

Question: Paramecium is a protista because of its __________.
Answer: Eukaryotic unicellular organisms

Question: Fungi do not contain __________.
Answer: Chlorophyll

Question: A fungus __________ can be seen without microscope.
Answer: Mushroom

Question: Common fungi used in preparing the bread is __________.
Answer: Yeast

Question: Algae and fungi form symbiotic association called __________.
Answer: Lichens

Give examples for the following

Question: Bilateral, dorsiventral symmetry is found in __________.
Answer: Liver fluke

Question: Worms causing disease elephantiasis is __________.
Answer: Filarial worm

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

Question: __________ are known to have pseudocoelom.
Answer: Nematodes

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

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

Question: __________ are called as amphibians of the plant kingdom.
Answer: bryophytes

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.