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