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