A) Seashell B) Seahorse C) Starfish D) Seal
A) 5 B) 8 C) 10 D) 6
A) Tube feet B) Fins C) Tentacles D) Claws
A) Overfishing B) Sea star wasting disease C) Pollution D) Climate change
A) Digestive system B) Circulatory system C) Nervous system D) Water vascular system
A) Atlantic B) Pacific C) Indian D) Arctic
A) Asymmetry B) Bilateral symmetry C) Radial symmetry D) Spiral symmetry
A) Algae B) Plants C) Mollusks D) Fish
A) Ophiuroidea B) Echinoidea C) Holothuroidea D) Asteroidea
A) Intertidal zones B) Tropical oceans C) Freshwater lakes D) Abyssal depths
A) Green B) Red or orange C) Yellow D) Black
A) Keystone species B) Predator on fish C) Invasive species D) Coral polyp
A) Releasing ink B) Shedding arms C) Camouflage D) Electric shock
A) Cretaceous period around 100 million years ago B) Ordovician period around 450 million years ago C) Cambrian period around 500 million years ago D) Jurassic period around 200 million years ago
A) Soft tissues B) Entire body C) Tube feet D) Ossicles and spines
A) It can have more than fifty arms. B) It has no central disc. C) It lacks tube feet. D) It is entirely transparent.
A) Detritus feeding B) Herbivorous feeding C) Specialized feeding D) Filter feeding
A) Only asexually B) By binary fission C) Both sexually and asexually D) Only sexually
A) Plankton B) Seaweed C) Benthic invertebrates D) Fish eggs
A) Papulae B) A thin cuticle C) Collagen fibres D) A thick dermis
A) Dermis B) Epidermis C) Peritoneum D) Myoepithelial layer
A) On the outer surface only B) In the coelomic cavity C) Under the epidermal layer, even those emerging externally D) Within papulae
A) Thin cuticle B) Collagen fibres C) Calcium carbonate components known as calcite microcrystals arranged in a lattice D) Single layer of cells
A) Protect madreporite B) Displace organisms from surface C) Support collagen fibres D) Serve a respiratory function
A) Silica B) Calcium carbonate C) Chitin D) Collagen fibres
A) Plasmodium falciparum B) Giardia lamblia C) Trypanosoma brucei D) Orchitophrya stellarum
A) Protoreaster nodosus B) Marthasterias glacialis C) Asterina pectinifera D) Pisaster ochraceus
A) 2-deoxyglucose B) 1-methyladenine C) colchicine D) cycloheximide
A) 30 °C (86 °F) B) 25 °C (77 °F) C) 35 °C (95 °F) D) 23 °C (73 °F)
A) Thirty times a minute B) Continuously without pause C) About six times a minute D) Once every hour
A) Filters waste products B) Starts digestion by swallowing prey whole C) Stores undigested food D) Absorbs nutrients directly from water
A) Crinoidea B) Echinoidea C) Somasteroidea D) Asterozoa
A) Spinulosida B) Brisingida C) Forcipulatida D) Valvatida
A) Lagerstätten B) Strata C) Sediment layers D) Fossil beds
A) Ampulla B) Radial canal C) Stone canal D) Madreporite
A) Gut tissue. B) Catch connective tissue. C) Ectodermic layer. D) Water vascular system.
A) To the tips of the papulae B) Via the anus C) Through the mouth D) Into the stomach
A) Urates B) Lactic acid C) Sulfates D) Carbon dioxide
A) Cilia provide structural support to the canals. B) They initiate fluid movement, which is bidirectional. C) They secrete adhesive chemicals for tube feet attachment. D) Cilia are responsible for producing oxygen in the starfish.
A) Astropecten polyacanthus B) Trichasteropsida C) Calliasterellidae D) Palasteriscus
A) An exoskeleton B) Spines C) Mucus glands D) A tough peristomial membrane
A) Estuarine environments B) Open oceans C) Deep oceanic trenches D) Coral reefs
A) Brisingida B) Paxillosida C) Forcipulatida D) Velatida
A) 100 g (3.5 oz) B) 70–90 g (2.5–3.2 oz) C) 50 g (1.8 oz) D) 20 g (0.7 oz)
A) Juvenile starfish B) Comet form C) Bipinnaria D) Brachiolaria
A) Asterozoa B) Crinoidea C) Holothuroidea D) Echinoidea
A) A few days. B) Instantly after the loss of an arm. C) One week. D) Several months.
A) Latin B) Greek C) English D) French
A) Oreaster reticulatus B) Marthasterias glacialis C) Linckia laevigata D) Asterina pectinifera
A) Brisingida B) Velatida C) Paxillosida D) Concentricycloidea
A) Phagocytic coelomocytes B) Nerve cells C) Epithelial cells D) Muscle cells
A) Forcipulatida B) Spinulosida C) Valvatida D) Paxillosida
A) Forcipulatida B) Brisingida C) Notomyotida D) Paxillosida
A) Oreaster reticulatus B) Asterias amurensis C) Pisaster ochraceus D) Crown-of-thorns starfish
A) Pteraster militaris B) Parvulastra parvivipara C) Asterina gibbosa D) Nepanthia belcheri
A) Notomyotida B) Brisingida C) Velatida D) Forcipulatida
A) Asterias rubens B) Astropecten polyacanthus C) Patiria miniata D) Pisaster ochraceus
A) Near the base of the tube feet B) In one of the arms C) At the center of the oral surface D) On the aboral surface
A) 10–50 B) 300–500 C) 1000–1500 D) 80–200
A) Trichasteropsis B) Palasteriscus C) Astropecten polyacanthus D) Calliasterella
A) Crinoidea B) Holothuroidea C) Echinoidea D) Brisingida
A) Paxillosida B) Spinulosida C) Brisingida D) Valvatida
A) Asterina gibbosa B) Parvulastra parvivipara C) Nepanthia belcheri D) Pteraster militaris |