Q1. Sycon belongs to a group of animals, which are best described as
(1) multicellular without any tissue organization
(2) multicellular having tissue organization, but no body cavity
(3) multicellular with a gastrovascular system
(4) unicellular or acellular
Ans: (1) multicellular without any tissue organization
Q2. During its life-cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively:
(1) cercaria and redia
(2) miracidium and metacercaria
(3) metacercaria and cercaria
(4) redia and miracidium
Ans: (4) redia and miracidium
Q3. Given below are four matchings of an animal and its kind of respiratory organ: (A) Silver fish – trachea (B) Scorpion – book lung (C) Sea squirt – pharyngeal gills (D) Dolphin – skin The correct matchings are
(1) A, B and C
(2) C and D
(3) B and D
(4) A and D
Ans: (1) A, B and C
Q4. Which one of the following is a matching pair of an animal and a certain phenomenon it exhibits?
(1) Musca – Complete metamorphosis
(2) Taenia – Polymorphism
(3) Chameleon – Mimicry
(4) Pheretima – Sexual dimorphism
Ans: (1) Musca – Complete metamorphosis
Q5. In contrast to Annelids the Platyhelminthes show:
(1) Radial symmetry
(2) Absence of body cavity
(3) Presence of pseudocoel
(4) Bilateral symmetry
Ans: (2) Absence of body cavity
Q6. From the following statements select the wrong one.
(1) Millipedes have two pairs of appendages in each segment of the body
(2) Prawn has two pairs of antennae
(3) Animals belonging to Phylum Porifera are exclusively marine
(4) Nematocysts are characteristic of the Phylum Cnidaria
Ans: (3) Animals belonging to Phylum Porifera are exclusively marine
Q7. Which one of the following characters is not typical of the class Mammalia?
(1) Ten pairs of cranial nerves
(2) Thecodont dentition
(3) Seven cervical vertebrae
(4) Alveolar lungs
Ans: (1) Ten pairs of cranial nerves
Q8. In Arthropoda, head and thorax are often fused to form cephalothorax, but in which one of the following classes, is the body divided into head, thorax and abdomen?
(1) Crustacea
(2) Insecta
(3) Arachnida and Crustacea
(4) Myriapoda
Ans: (2) Insecta
Q9. The animals with bilateral symmetry in young stage, and radial pentamerous symmetry in the adult stage, belong to the phylum
(1) Cnidaria
(2) Annelida
(3) Echinodermata
(4) Mollusca
Ans: (3) Echinodermata
Q10. Which one of the following is a matching set of a phylum and its three examples?
(1) Porifera – Spongilla, Euplectella, Pennatula
(2) Platyhelminthes – Planaria, Schistosoma, Enterobius
(3) Cnidaria – Bonellia, Physalia, Aurelia
(4) Mollusca – Loligo, Teredo, Octopus
Ans: (4) Mollusca – Loligo, Teredo, Octopus
Q11. Metameric segmentation is the characteristic of
(1) Mollusca and Chordata
(2) Echinoderms and Annelida
(3) Platyhelminthes and Arthropoda
(4) Annelida and Arthropoda
Ans: (4) Annelida and Arthropoda
Q12. Biradial symmetry and lack of cnidoblasts are the characteristics of
(1) Hydra and starfish
(2) Ctenoplana and Beroe
(3) Starfish and sea anemone
(4) Aurelia and Paramecium
Ans: (2) Ctenoplana and Beroe
Q13. In which one of the following sets of animals do all the four give birth to young ones?
(1) Kangaroo, Hedgehog, Dolphin,, Loris
(2) Platypus, Penguin, Bat, Hippopotamus
(3) Lion, Bat, Whale, Ostrich
(4) Shrew, Bat, Cat, Kiwi
Ans: (1) Kangaroo, Hedgehog, Dolphin,, Loris
Q14. Two common characters found in centipede, cockroach and crab are
(1) Book lungs and antennae
(2) Jointed legs and chitinous exoskeleton
(3) Compound eyes and anal cerci
(4) Green gland and tracheae
Ans: (2) Jointed legs and chitinous exoskeleton
Q15. Which one of the following is the true description about an animal concerned?
(1) Rat – Left kidney is slightly higher in position than the right one
(2) Earthworm – The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine
(3) Cockroach – 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)
(4) Frog – Body divisible into three regions – head, neck and trunk
Ans: (3) Cockroach – 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)
Q16. Which one of the following is NOT a characteristic of phylum Annelida?
(1) Pseudocoelom
(2) Closed circulatory system
(3) Ventral nerve cord
(4) Segmentation
Ans: (1) Pseudocoelom
Q17. Which of the following pairs are correctly matched? Animals – Morphological features \(i) Crocodile – 4-chambered heart \(ii) Sea urchin – Parapodia\(iii) Obelia – Thecodont \(iv) Lemur – Thecodont
(1) only (i) and (ii)
(2) (ii), (iii) and (iv)
(3) (i), (iii) and (iv)
(4) only (i) and (iv)
Ans: (4) only (i) and (iv)
Q18. Annual migration does not occur in the case of
(1) Arctic tern
(2) Siberian crane
(3) Salmon
(4) Salamander
Ans: (4) Salamander
Q19. What is common about Trypanosoma, Noctiluca, Monocystis and Giardia?
(1) These are all parasites
(2) They have flagella
(3) These are all unicellular protists
(4) They produce spores
Ans: (3) These are all unicellular protists
Q20. Which one of the following pairs of animals comprises ‘jawless fishes’?
(1) Guppies and hagfishes
(2) Mackerels and Rohu
(3) Lampreys and eels
(4) Lampreys and hagfishes
Ans: (4) Lampreys and hagfishes
Q21. Which one of the following groups of animals is bilaterally symmetrical and triploblastic?
(1) Sponges
(2) Aschelminthes (roundworms)
(3) Coelenterates (Cnidarians)
(4) Ctenophores
Ans: (2) Aschelminthes (roundworms)
Q22. Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature? Animals Morphological – feature
(1) Scorpion, Spider, – Ventral solid central Cockroach nervous system
(2) Liver fluke, Sea – Bilateral anemone, Sea symmetry cucumber
(3) Cockroach, – Metameric Locust, Taenia segmentation
(4) Centipede, Prawn- Jointed appendages Sea urchin
Ans: (1) Scorpion, Spider, – Ventral solid central Cockroach nervous system
Q23. Ascaris is characterized by
(1) presence of true coelom but absence of metamerism
(2) absence of true coelom but presence of metamerism
(3) presence of true coelom and metamerism (metamerisation)
(4) presence of neither true coelom nor metamerism
Ans: (4) presence of neither true coelom nor metamerism
Q24. Which one of the following phyla is correctly matched with its two general characteristics?
(1) Echinoderms – Pentamerous radial symmetry and mostly internal fertilization
(2) Arthropoda – Body divided into head, thorax and abdomen and respiration by tracheae
(3) Mollusca – Normally oviparous and development through a trochophore or veliger larva
(4) Chordata – Notochord at some stage and separate anal and urinary openings to the outside
Ans: (3) Mollusca – Normally oviparous and development through a trochophore or veliger larva
Q25. What will you look for to identify the sex of the following?
(1) Female cockroach-Anal cerci
(2) Female Ascaris- Sharply curved posterior end
(3) Male shark-Claspers borne on pelvic fins
(4) Male frog- A copulatory pad on the first digit of the hindlimb
Ans: (3) Male shark-Claspers borne on pelvic fins
Q26. Which one of the following statements about certain given animals is correct?
(1) Insects are pseudocoelomates
(2) Roundworms (Aschelminthes) are pseudocoelomates
(3) Flatworms (Platyhelminthes) are coelomates
(4) Molluscs are acoelomates
Ans: (2) Roundworms (Aschelminthes) are pseudocoelomates
Q27. Which one of the following kinds of animals are triploblastic?
(1) Ctenophores
(2) Flatworms
(3) Corals
(4) Sponges
Ans: (2) Flatworms
Q28. Which one of the following statements about all four of Spongilla, Leech, Dolphin and Penguin is correct?
(1) Spongilla has special collared cells called choanocytes, not found in the remaining three
(2) Penguin is homeothermic while the remaining three are poikilothermic
(3) All are bilaterally symmetrical
(4) Leech is a fresh water form while all others are marine
Ans: (1) Spongilla has special collared cells called choanocytes, not found in the remaining three
Q29. One example of animals having a single opening to the outside that serves both as mouth as well as anus is:
(1) Ascidia
(2) Octopus
(3) Fasciola
(4) Asterias
Ans: (3) Fasciola
Q30. Frogs differ from humans in possessing:
(1) nucleated red blood cells
(2) paired cerebral hemispheres
(3) thyroid as well as parathyroid
(4) hepatic portal system
Ans: (1) nucleated red blood cells
Q31. Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct?
(1) It is absent throughout life in humans from the very beginning
(2) It is present only in larval tail in Ascidians
(3) It is present throughout life in Amphioxus
(4) It is replaced by a vertebral column in adult frog
Ans: (1) It is absent throughout life in humans from the very beginning
Q32. In which one of the following, the genus name, its two characters and its class/phylum are correctly matched? Genus name –Two characters –Class/ phylum
(1) Pteropus –(i) Skin possesses hair Mammalia (ii) Oviparous–Mamalia
(2) Ascaris –(i) Body segmented Annelida (ii) Males and females distinct — Anelida
(3) Aurelia –(i) Cnidoblasts Coelenterata (ii) Organ level of organization– Coelenterata
(4) Salamandra –(i) A tympanum represents ear Amphibia (ii) Fertilization is external –Amphibia
Ans: (1) Pteropus –(i) Skin possesses hair Mammalia (ii) Oviparous–Mamalia
Q33. Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?
(1) Chondrichthyes: possess cartilaginous endoskeleton
(2) Reptilia: possess 3 – chambered heart with one incompletely divided ventricle
(3) Mammalia: give birth to young one.
(4) Chordata: possess a mouth provided with an upper and lower jaw
Ans: (1) Chondrichthyes: possess cartilaginous endoskeleton
Q34. Which one of the following have the highest number of species in nature?
(1) Birds
(2) Fungi
(3) Angiosperms
(4) Insects
Ans: (4) Insects
Q35. Which group of animals belong to the same phylum?
(1) Sponge, Sea anemone, Starfish
(2) Earthworm, Pinworm, Tapeworm
(3) Malarial parasite, Amoeba, Mosquito
(4) Prawn, Scorpion, Locusta
Ans: (4) Prawn, Scorpion, Locusta
Q36. Which one of the following categories of animals, is correctly described with no single exception in it?
(1) All bony fishes have four pairs of gills and an operculum on each side.
(2) All sponges are marine and have collared cells.
(3) All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal).
(4) All mammals are viviparous and possess a diaphragm for breathing.
Ans: (2) All sponges are marine and have collared cells.
Q37. Which one of the following pairs of animals are similar to each other pertaining to the feature stated against them?
(1) Ascaris and Ancylostoma – Metameric segmentation
(2) Pteropus and Or nithorhyncus – Viviparity
(3) Seahorse and Flying fish – Cold blooded (poikilothermic)
(4) Garden lizard and Crocodile – Three chambered heart
Ans: (3) Seahorse and Flying fish – Cold blooded (poikilothermic)
Q38. The figure shows four animals (A), (B), (C) and (D). Select the correct answer with respect to a common characteristics of two of these animals. (A) (B) (C) (D)
(1) (A) and (B) have cnidoblasts for self defense
(2) (A) and (D) respire mainly through body wall
(3) (C) and (D) have a true coelom
(4) (B) and (C) show radial symmetry
Ans: (3) (C) and (D) have a true coelom
Q39. Which one of the following animals is correctly matched with its one characteristics and the taxon? Animal Characteristic Taxon
(1) Sea Anemone — Triploblastic — Cnidaria
(2) Duckbilled — Oviparous — Mammalian platypus
(3) Silverfish– Pectoral and Chordata — Pelvic fins
(4) Millipede — Ventral nerve — Arachnida cord
Ans: (2) Duckbilled — Oviparous — Mammalian platypus
Q40. The characteristics of class Reptilia are:
(1) Freshwater animals with bony endoskeleton, air-bladder to regulate buoyancy
(2) Body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears
(3) Marine animals with cartilaginous endoskeleton, body covered with placoid scales
(4) Body covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into a common cloaca
Ans: (2) Body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears
Q41. One of the representatives of phylum Arthropoda is:
(1) Flying fish
(2) Silverfish
(3) Cuttlefish
(4) Pufferfish
Ans: (2) Silverfish
Q42. Which of the following are correctly matched with respect to their taxonomic classification?
(1) Spiny anteater, sea urchin, sea cucumberEchinodermata
(2) Centipede, millipede, spider, scorpion Insect
(3) Flying fish, cuttlefish, silverfish-Pisces
(4) House fly, butterfly, tse tse fly, silverfish
Ans: (4) House fly, butterfly, tse tse fly, silverfish
Q43. Match the name of the animal (column I), with one characteristic (column II), and the phylum/class (column III) to which it belongs : Column I — Column II — Column III
(1) Adamsia — radially Porifera — symmetrical
(2) Ichthyophis — terrestrial — Reptilia
(3) Petromyzon– ectoparasite — Cyclostomata
(4) Limulus — body Pisces covered by chitinous — exoskeleton
Ans: (3) Petromyzon– ectoparasite — Cyclostomata
Q44. Perisperm is
(1) peripheral part of endosperm
(2) remnant of endosperm
(3) disintegrated secondary nucleus
(4) persistent nucellus
Ans: (4) persistent nucellus
Q45. Micropyle of seed is involved in the passage of
(1) water
(2) male gamete
(3) gases
(4) pollen tube
Ans: (1) water
Q46. Fruit of Groundnut is
(1) Berry
(2) Legume
(3) Nut
(4) Caryopsis
Ans: (2) Legume
Q47. Sharks and dogfishes differ from skates and rays by
(1) Head and trunk widened considerably
(2) Their pectoral fins distinctly marked off from cylindrical bodies
(3) Distinct demarcation between body and tail
(4) Gill slits are ventrally placed
Ans: (2) Their pectoral fins distinctly marked off from cylindrical bodies
Q48. Which one of the following groups of animals reproduces only by sexual means?
(1) Porifera
(2) Ctenophora
(3) Protozoa
(4) Cnidaria
Ans: (2) Ctenophora
Q49. Tegmen develops from
(1) inner integument
(2) funiculus
(3) outer integument
(4) chalaza
Ans: (1) inner integument
Q50. In Groundnut the food/oil reserve is present in
(1) endosperm
(2) epicarp
(3) cotyledons
(4) mesocarp
Ans: (3) cotyledons
Q51. New Banana plants develop from
(1) stolon
(2) rhizome
(3) seed
(4) sucker
Ans: (4) sucker
Q52. Mango juice is got from
(1) endocarp
(2) epicarp
(3) pericarp and thalamus
(4) mesocarp
Ans: (4) mesocarp
Q53. Syngenesious condition is found in
(1) Solanaceae
(2) Asteraceae
(3) Fabaceae
(4) Labiate
Ans: (2) Asteraceae
Q54. Vegetative reproduction of Agave occurs through
(1) bulbils
(2) rhizome
(3) sucker
(4) stolon
Ans: (1) bulbils
Q55. Velamen is found in
(1) leaves of Ficus elastica
(2) roots of Screwpine
(3) aerial roots of orchids
(4) aerial and terrestrial roots of orchids
Ans: (3) aerial roots of orchids
Q56. A family delimited by head type of inflorescence is
(1) Solanaceae
(2) Fabaceae
(3) Liliaceae
(4) Asteraceae
Ans: (4) Asteraceae
Q57. Vivipary is characteristic of
(1) hygrophytes
(2) mesophytes
(3) halophytes
(4) xerophytes
Ans: (3) halophytes
Q58. Germination of seed within fruit is
(1) hypogeal
(2) ovipary
(3) epigeal
(4) vivipary
Ans: (4) vivipary
Q59. Vivipary is
(1) fruit development without pollination
(2) seed germination with subterranean cotyledons
(3) seed germination inside the fruit while attached to the plant
(4) seed germination with mediterranean cotyledons
Ans: (3) seed germination inside the fruit while attached to the plant
Q60. Botanical name of Cauliflower is
(1) Brassica oleracea var. botrytis
(2) Brassica oleracea var. capitata
(3) Brassica oleracea var. gemmifera
(4) Brassica campestris
Ans: (1) Brassica oleracea var. botrytis
Q61. Fruit of Mangifera indica is
(1) Capsule
(2) Berry
(3) Siliqua
(4) Drupe
Ans: (4) Drupe
Q62. Hypanthodium is
(1) inflorescence
(2) thalamus
(3) ovary
(4) fruit
Ans: (1) inflorescence
Q63. Plant having a column of vascular tissues bearing fruits and having a tap root system is
(1) gymnosperm of dicot
(2) monocot
(3) gymnosperm or monocot
(4) dicot
Ans: (4) dicot
Q64. A perennial plant differs from biennial in
(1) being tree species
(2) having underground perennating structure
(3) not dying after seasonal production of flowers
(4) having asexual reproductive structures
Ans: (3) not dying after seasonal production of flowers
Q65. Pulses are obtained from
(1) Poaceae
(2) Fabaceae
(3) Solanaceae
(4) Asteraceae
Ans: (2) Fabaceae
Q66. Epipetalous stamens with free filaments and fused anthers occur in
(1) Liliaceae
(2) Asteraceae
(3) Poaceae
(4) Solanaceae
Ans: (2) Asteraceae
Q67. Which one of the following statements is correct with respect to the plant species and its use?
(1) Ricinus communis – important edible cereal
(2) Oryza sativa – rich source of protein
(3) Hibiscus esculentus – flowers eaten throughout the country.
(4) Manihot utilissima – root tubers eaten especially in Kerala
Ans: (4) Manihot utilissima – root tubers eaten especially in Kerala
Q68. Which part of the coconut produces coir?
(1) Epicarp
(2) Seed coat
(3) Pericarp.
(4) Mesocarp
Ans: (4) Mesocarp
Q69. Which one of the following is a true fruit?
(1) Cashew nut
(2) Apple
(3) Coconut
(4) Pear
Ans: (3) Coconut
Q70. Tetradynamous stamens are found in family
(1) Cruciferae
(2) Malvaceae
(3) Liliaceae
(4) Solanaceae
Ans: (1) Cruciferae
Q71. Buttress roots are found in
(1) Terminalia
(2) sorghum
(3) Pandanus
(4) banyan
Ans: (1) Terminalia
Q72. The embryo in sunflower has
(1) many cotyledons
(2) one cotyledon
(3) no cotyledon
(4) two cotyledons
Ans: (4) two cotyledons
Q73. Aril represents the edible part of
(1) mango
(2) banana
(3) apple
(4) litchi
Ans: (4) litchi
Q74. Which plant will lose its economic value if its fruits are produced by induced parthenocarpy?
(1) banana
(2) brape
(3) orange
(4) pomegranate
Ans: (4) pomegranate
Q75. Heterospory and seed habit are often discussed in relation to a structure called
(1) petiole
(2) spathe
(3) ligule
(4) bract
Ans: (3) ligule
Q76. Most plants are green in colour because
(1) chlorophyll is least effective in absorbing green light
(2) the atmosphere filters out all the colours of the visible light spectrum except green
(3) green light allows maximum photosynthesis
(4) green light is the most effective wavelength region of the visible spectrum in sunlight for photosynthesis
Ans: (1) chlorophyll is least effective in absorbing green light
Q77. Match the following and indicate which is correct
(1) Brassicaceae – Wheat
(2) Cucurbitaceae – Orange
(3) Leguminosae – Sunflower
(4) Malvaceae – Cotton
Ans: (4) Malvaceae – Cotton
Q78. The type of placentation in which ovary is syncarpous, unilocular and ovules on sutures is called
(1) marginal placentation
(2) apical placentation
(3) superficial placentation
(4) parietal placentation
Ans: (4) parietal placentation
Q79. The plant, which bears clinging roots, is
(1) screw pine
(2) trapa
(3) podostemon
(4) orchid
Ans: (4) orchid
Q80. Angiosperm to which the largest flowers belong?
(1) total root parasite
(2) total stem parasite
(3) partial root parasite
(4) partial stem parasite
Ans: (1) total root parasite
Q81. Floral features are chiefly used in Angiosperms identification because
(1) reproductive parts are more stable and conservative than vegetative parts
(2) flowers are of various colours
(3) flowers are nice to work with
(4) flowers can be safely pressed
Ans: (1) reproductive parts are more stable and conservative than vegetative parts
Q82. Which is the correct pair for the edible part?
(1) Guava – mesocarp
(2) Tomato – Thalamus
(3) Data palm – Mesocarp
(4) Maize – Cotyledons
Ans: (3) Data palm – Mesocarp
Q83. Bicarpellary gynoecium and oblique ovary occurs in
(1) Pisum
(2) Mustard
(3) Brinjal
(4) Banana
Ans: (3) Brinjal
Q84. Edible part of the banana is
(1) endocarp and less developed mesocarp
(2) epicarp
(3) epicarp and mesocarp
(4) mesocarp and less developed endocarp
Ans: (4) mesocarp and less developed endocarp
Q85. Roots of which plant contain an oxidising agent?
(1) Mustard
(2) Carrot
(3) Radish
(4) Soyabean
Ans: (4) Soyabean
Q86. What is the eye of a potato?
(1) Adventitious bud
(2) Axillary bud
(3) Apical bud
(4) Accessory bud
Ans: (1) Adventitious bud
Q87. In a cereal grain the single cotyledon of embryo is represented by
(1) coleoptile
(2) scutellum
(3) coleorhiza
(4) prophyll
Ans: (2) scutellum
Q88. An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is
(1) Anatropous
(2) Hemitropous
(3) Orthotropous
(4) Campylotropous
Ans: (2) Hemitropous
Q89. The aleurone layer in maize grain is specially rich in
(1) starch
(2) auxins
(3) lipids
(4) proteins
Ans: (4) proteins
Q91. Juicy hair–like structures observed in the lemon fruit develop from
(1) mesocarp
(2) mesocarp and endocarp
(3) endocarp
(4) exocarp
Ans: (3) endocarp
Q92. Which of the following is a correct pair?
(1) Opuntia – predator
(2) Cuscuta – parasite
(3) Capsella – hydrophyte
(4) Dischidia – insectivorous
Ans: (2) Cuscuta – parasite
Q93. Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing micro-organism
(1) Cicer arietinum
(2) Crotalaria juncea
(3) Casuarina equisetifolia
(4) Cycas revoluta
Ans: (3) Casuarina equisetifolia
Q94. Pentamerous, actinomorphic flowers, bicarpellate ovary with oblique septa and fruit a capsule of berry, are characteristic features of
(1) Liliaceae
(2) Brassicaceae
(3) Asteraceae
(4) Solanaceae
Ans: (4) Solanaceae
Q95. Pineapple (ananas) fruit develops from
(1) a multilocular monocarpellary flower
(2) a multi pistillate syncarpous flower
(3) a unilocular polycarpellary flower
(4) a cluster of compactly borne flowers on a common axis
Ans: (4) a cluster of compactly borne flowers on a common axis
Q96. Long filamentous threads protruding at the end of the young cob of maize are
(1) hairs
(2) styles
(3) anthers
(4) ovaries
Ans: (2) styles
Q97. What type of placentation is seen in sweet pea?
(1) Marginal
(2) Axile
(3) Basal
(4) Free central
Ans: (1) Marginal
Q98. Keel is characteristic of the flowers of:
(1) Calotropis
(2) Gulmohur
(3) Bean
(4) Cassia
Ans: (3) Bean
Q99. In unilocular ovary with a single ovule the placentation is:
(1) Free Central
(2) Marginal
(3) Axile
(4) Basal
Ans: (4) Basal
Q100. An example of axile placentation is:
(1) Marigold
(2) Dianthus
(3) Argemone
(4) Lemon
Ans: (4) Lemon
