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