A phenomenon when parasite parasitizes themselves is known as
1.Hyperparasitism
2.Parasitoids
3.Monoxenous parasitism
4.Polyxenous parasitism
Air bladder is present in
1.Chondrichthyes
2.Star fishes
3.Actinopterygii
4.Flying fishes
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
Animals having a built in thermostat to maintain constant body temperature are known as
1.Biothermic
2.Poikilothermic
3.Oligothermic
4.Homeothermic
Animals, floating and drifting on the surface of water are ______.
1.Benthos
2.Pelagic
3.Plankton
4.Neritic
Annelids are called ______ worms.
1.Parasitic
2.Segmented
3.Flat-bodied
4.Acoelomate
Bed Bugs contribute to the spread of
1.Typhoid
2.Yellow fever
3.Typhus
4.Trench fever
Cell tissue grade of organization occurs in
1.Platyhelminthes
2.Sponges
3.Protozoa
4.Coelenterata
Cnidarians having cells called cnidocytes, contain organelles known as ______.
1.Polymorphism
2.Nematocysts
3.Hermaphroditism
4.None of these
Cold-blooded animals fall into which category?
1.Ectotherms
2.Psychrotherms
3.Endotherms
4.Thermophiles
Cysticercus stage is formed in
1.Taenia
2.Plasmodium
3.Leishmania
4.Wuchereria
Earthworms eliminate cellular wastes and excess water through excretory tubules called ______
1.Nephridia
2.Flame cells
3.Coelom
4.Gizzard
Fluke infections are diseases of the _______ in humans.
1.Blood
2.Bile
3.Digestive tract
4.Lungs
Ichthyophis is a
1.Worm blooded
2.Limbless reptile
3.Mammal
4.Limbless amphibian
In cephalopod, the brain is formed from the fusion of ______
1.Spinal cord
2.Ganglia
3.Eye tissue
4.Trochophore
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
In planarians water enters the body by ___
1.osmosis
2.contractile vacuoles
3.flame cells
4.active transport
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
Male mosquitoes usually feed on
1.Garbage
2.Human blood
3.Flower sap
4.All of the above
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
Order Rhynchocephalia consists of
1.Tuataras
2.Lizards and snakes
3.Turtles and tortoises
4.Crocodiles, alligators, caimans
Ornithorhynchus is a
1.fossil bird
2.flightless bird
3.connecting link between reptiles and birds
4.mammal
Ornithorhynchus is an example of :
1.Dinosaur
2.Monotreme mammal
3.Marsupial mammal
4.Eutherian mammal
Peripatus is a connecting link between
1.Coelenterata and Porifera
2.Ctenophora and Platyhelminthes
3.Mollusca and Echinodermata
4.Annelida and Arthropoda
Phylogenetic classification is based on
1.External similarity
2.Common evolution
3.Habit and habitat
4.Utilitarian system
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
Pneumatic bones are expected to be found in
1.Flying fish
2.Whale
3.Tadpole of frog
4.Pigeon
Pupa occurs in the life cycle of
1.Blatta
2.Mosquito
3.Housefly
4.Periplaneta
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
Radial symmetry is usually associated with
1.lower grade of organization
2.creeping mode of life
3.aquatic life
4.sedentary mode of life
Radial symmetry occurs in which set?
1.Echinodermata and Coelenterata
2.Porifera and Coelenterata
3.Mollusca and Arthropoda
4.Platyhelminthes and Coelenterata
Radula is found in
1.Pila sp.
2.Chiton sp.
3.Lamellidens sp.
4.Pinctada sp.
Sharks, skates, and rays are also called ______ fishes.
1.Jawless
2.Bony
3.Cartilaginous
4.Freshwater
Swarming generally occurs in
1.Pyrilla
2.Mosquito
3.House fly
4.Locust
Tachyglossus is a connecting link between
1.Reptiles and Birds
2.Amphibians and Reptiles
3.Birds and Mammals
4.Reptiles and Mammals
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
The metamorphosis of insects appears to be regulated through
1.Thyroxine
2.Haemolymph
3.Ecdysone
4.All the above
The osculum is an excretory structure in
1.Star fish
2.Hydra
3.Silver fish
4.Sponge
The scientific name of Asian tiger mosquito
1.Aedes aegypti
2.Aedes albopictus
3.Aedes taeniorhynchus
4.Aedes albolineatus
Water-Vascular system is found in
1.Sea-anemone
2.Sea-pen
3.Sea-cucumber
4.Sea-horse
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
Which one of the following is NOT a characteristic of phylum Annelida?
1.Ventral nerve cord
2.Closed circulatory system
3.Segmentation
4.Pseudocoelom
Which one of the following is oviparous?
1.Elephant
2.Flying fox
3.Platypus
4.Whale
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.
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
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.
Which one of the followings belongs to platyhelminthes?
1.Plasmodium
2.Trypanosoma
3.Schistosoma
4.Wuchereria
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
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
______ are devoid of respiratory, excretory and circulatory organs.
1.Threadworms
2.Sponges
3.Tapeworms
4.Liver fluke