A phenomenon when parasite parasitizes themselves is known as
1.Hyperparasitism
2.Parasitoids
3.Monoxenous parasitism
4.Polyxenous parasitism
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Air bladder is present in
1.Chondrichthyes
2.Star fishes
3.Actinopterygii
4.Flying fishes
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All flat worms differ from all round worms in having
1.Triploblastic body
2.Solid mesoderm
3.Bilateral symmetry
4.Metamorphosis in the life history
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Animals having a built in thermostat to maintain constant body temperature are known as
1.Biothermic
2.Poikilothermic
3.Oligothermic
4.Homeothermic
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Animals, floating and drifting on the surface of water are ______.
1.Benthos
2.Pelagic
3.Plankton
4.Neritic
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Annelids are called ______ worms.
1.Parasitic
2.Segmented
3.Flat-bodied
4.Acoelomate
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Bed Bugs contribute to the spread of
1.Typhoid
2.Yellow fever
3.Typhus
4.Trench fever
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Cell tissue grade of organization occurs in
1.Platyhelminthes
2.Sponges
3.Protozoa
4.Coelenterata
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Cnidarians having cells called cnidocytes, contain organelles known as ______.
1.Polymorphism
2.Nematocysts
3.Hermaphroditism
4.None of these
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Cold-blooded animals fall into which category?
1.Ectotherms
2.Psychrotherms
3.Endotherms
4.Thermophiles
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Cysticercus stage is formed in
1.Taenia
2.Plasmodium
3.Leishmania
4.Wuchereria
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Earthworms eliminate cellular wastes and excess water through excretory tubules called ______
1.Nephridia
2.Flame cells
3.Coelom
4.Gizzard
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Fluke infections are diseases of the _______ in humans.
1.Blood
2.Bile
3.Digestive tract
4.Lungs
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Ichthyophis is a
1.Worm blooded
2.Limbless reptile
3.Mammal
4.Limbless amphibian
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In cephalopod, the brain is formed from the fusion of ______
1.Spinal cord
2.Ganglia
3.Eye tissue
4.Trochophore
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In many animals the rapid change from the immature organism to the adult (change from larva to adult in insects) means
1.Cephalization
2.Molting
3.Metamorphosis
4.Endothermy
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In planarians water enters the body by ___
1.osmosis
2.contractile vacuoles
3.flame cells
4.active transport
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Insect mouthparts are adapted for different functions in different species. Mouthparts of houseflies are used for
1.Siphoning
2.Piercing and sucking
3.Sponging and lapping
4.Biting and chewing
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Which one of the following statements is incorrect?
1.Viviparity is the reproductive pattern shown by most mammals
2.Viviparity occurs primarily in salamanders and caecilians.
3.In viviparity, a shell does not form around the egg.
4.Viviparity is not found in species of lizards and snakes.
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Male mosquitoes usually feed on
1.Garbage
2.Human blood
3.Flower sap
4.All of the above
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One example of animals having a single opening to the outside that serves both as mouth as well as anus is
1.Fasciola
2.Octopus
3.Asterias
4.Ascidia
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Order Rhynchocephalia consists of
1.Tuataras
2.Lizards and snakes
3.Turtles and tortoises
4.Crocodiles, alligators, caimans
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Ornithorhynchus is a
1.fossil bird
2.flightless bird
3.connecting link between reptiles and birds
4.mammal
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Ornithorhynchus is an example of :
1.Dinosaur
2.Monotreme mammal
3.Marsupial mammal
4.Eutherian mammal
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Peripatus is a connecting link between
1.Coelenterata and Porifera
2.Ctenophora and Platyhelminthes
3.Mollusca and Echinodermata
4.Annelida and Arthropoda
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Phylogenetic classification is based on
1.External similarity
2.Common evolution
3.Habit and habitat
4.Utilitarian system
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Phylum mollusca can be distinguished from other invertebrates by the presence of
1.Bilateral symmetry and exoskeleton
2.A mantle and gills
3.Shell and non-segmented body
4.A mantle and non-segmented body
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Pneumatic bones are expected to be found in
1.Flying fish
2.Whale
3.Tadpole of frog
4.Pigeon
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Pupa occurs in the life cycle of
1.Blatta
2.Mosquito
3.Housefly
4.Periplaneta
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Radial symmetry is generally exhibited by which animals?
1.Which are attached with substratum
2.Which have one opening of alimentary canal
3.Which have ciliary feeding
4.Which are aquatic
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Radial symmetry is usually associated with
1.lower grade of organization
2.creeping mode of life
3.aquatic life
4.sedentary mode of life
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Radial symmetry occurs in which set?
1.Echinodermata and Coelenterata
2.Porifera and Coelenterata
3.Mollusca and Arthropoda
4.Platyhelminthes and Coelenterata
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Radula is found in
1.Pila sp.
2.Chiton sp.
3.Lamellidens sp.
4.Pinctada sp.
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Sharks, skates, and rays are also called ______ fishes.
1.Jawless
2.Bony
3.Cartilaginous
4.Freshwater
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Swarming generally occurs in
1.Pyrilla
2.Mosquito
3.House fly
4.Locust
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Tachyglossus is a connecting link between
1.Reptiles and Birds
2.Amphibians and Reptiles
3.Birds and Mammals
4.Reptiles and Mammals
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Taxonomically a species is
1.A group of evolutionary related populations
2.Population having same evolutionary basis
3.Fundamental unit is phylogenetic history of organisms
4.Category to which most taxonomic information is attached
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The metamorphosis of insects appears to be regulated through
1.Thyroxine
2.Haemolymph
3.Ecdysone
4.All the above
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The osculum is an excretory structure in
1.Star fish
2.Hydra
3.Silver fish
4.Sponge
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The scientific name of Asian tiger mosquito
1.Aedes aegypti
2.Aedes albopictus
3.Aedes taeniorhynchus
4.Aedes albolineatus
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Water-Vascular system is found in
1.Sea-anemone
2.Sea-pen
3.Sea-cucumber
4.Sea-horse
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Which one of the following characteristics is NOT a shared by birds and mammals?
1.A backbone and internal skeleton
2.Breathing using lungs
3.Viviparity
4.Warm blooded nature
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Which one of the following is NOT a characteristic of phylum Annelida?
1.Ventral nerve cord
2.Closed circulatory system
3.Segmentation
4.Pseudocoelom
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Which one of the following is oviparous?
1.Elephant
2.Flying fox
3.Platypus
4.Whale
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Which one of the following statements is incorrect?
1.Radial symmetry is displayed by sea anemone and aquatic animal.
2.Fasciola hepatica is also known as the sheep liver fluke.
3.Triploblastic animals are usually bilaterally symmetrical
4.Mesoglea is present in between ectoderm and endoderm in Obelia
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Which one of the following statements is stated incorrectly regarding cartilaginous fishes?
1.Cartilaginous fishes have sense organs.
2.Most cartilaginous fishes have color vision.
3.Teeth-like placoid scales are found on the skin of cartilaginous fishes.
4.In cartilaginous fishes, gas exchange occurs in the gills.
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Which one of the followings belongs to platyhelminthes?
1.Plasmodium
2.Trypanosoma
3.Schistosoma
4.Wuchereria
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Which one of the followings in birds indicates their reptilian ancestry?
1.Eggs with a calcareous shell
2.Scales on their hind limbs
3.Four-chambered heart
4.Two special chambers crop and gizzard in their digestive tract
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Which statement is correct regarding reptiles, birds, and mammals?
1.Evolved from a common ancestor
2.Embryos are surrounded by a fluid-filled sac called amnion
3.Outer covering is largely watertight.
4.All of the above
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______ are devoid of respiratory, excretory and circulatory organs.
1.Threadworms
2.Sponges
3.Tapeworms
4.Liver fluke
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