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