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