Description : The larva of balanoglossus a) Planule b) Trochophore c) Tornaria d) Veliger
Last Answer : c) Tornaria
Description : Which one of the following phyla is correctly matched with its two general characteristics? (a) Echinodermata - pentamerous radial symmetry and mostly internal fertilization (b) Mollusca - normally ... Chordata - notochord at some stage and separate anal and urinary openings to the outside.
Last Answer : (c) Arthropoda - body divided into head, thorax and abdomen and respiration by tracheae
Description : The function of contractile vacuole a) Nutrition b) Reproduction c) Osmoregulation d) Locomotion
Last Answer : c) Osmoregulation
Description : Example of a digenetic parasite a) Entamoeba b) Enterobium c) Planaria d) schistosoma
Last Answer : d) schistosoma
Description : Removal of outer exoskeleton is the process called a) Metamorphosis b) Ecdysis c) Paedogenesis d) Gametogenesis
Last Answer : a) Metamorphosis
Description : Notochord is found in the tail regionof a) Chordata b) Urochordata c) Cephalochordata d) Vertebrata
Last Answer : b) Urochordata
Description : Respiratory tree of sea cucumber is located at a) Mouth b) Cloaca c) Stomach d) Ambulacral groove
Last Answer : d) Ambulacral groove
Description : Sensory cephalic tentacles in Dentalium a) Byssus thread b) Radula c) Capticula d) Osphredia
Last Answer : a) Byssus thread
Description : A mollusc with internal shell a) Nautilus b) Pila c) Sepia d) Chiton
Last Answer : c) Sepia
Description : Green gland is associated with a) Excretion b) Nutrition c) Defence d) Respiration
Last Answer : a) Excretion
Description : Connecting link between Annelida and Arthropoda a) Nereis b) Limulus c) Peripatus d) Pheretima
Last Answer : c) Peripatus
Description : Locomotory organ in nereis a) Parapodia b) Tentacles c) Cilia d) Flagella
Last Answer : a) Parapodia
Description : Vector of filariasis a) Anopheles b) Culex c) Tse-tse fly d) Mites
Last Answer : b) Culex
Description : Taenia belongs to class a) Cestoda b) Nematoda c) Trematoda d) Turbellaria
Last Answer : a) Cestoda
Last Answer : : Animals of the Eurocordata stage have notocord only in the larval stage.
Description : Is there a larval stage in echinoderms?
Last Answer : In echinoderms embryonic development is indirect, with ciliated larvae.
Description : How are the main classes of arthropods classified according to the presence of larval stage in their embryonic development?
Last Answer : In crustaceans there are species with direct and others with indirect development. In insects there are species without larval stage (ametabolic insects), others undergoing indirect ... while holometabolic insects undergo complete metamorphosis. Phylum Arthropoda - Image Diversity: metamorphosis
Description : What is the name of the larval stage of polychaetes?
Last Answer : Among the annelid classes only polychaetes present a larval stage. Their larva is called trocophore.
Description : What is direct development? Is there a larval stage in planarias?
Last Answer : Sexual reproduction with direct development is that in which there is not a larval stage in the embryonic development. When a larval stage exists it is said to be indirect development. In the sexual reproduction of planarias there is no larval stage.
Description : What is the name of the larva of corals and sea anemones? What is the biological importance of that larval stage?
Last Answer : Sexual reproduction in corals and sea anemones have a larval stage and the larva is called planula. Many marine animals are sessile or practically sessile, like sponges, corals and sea ... stage of their life cycle provides better spatial distribution of these species. Image Diversity: planula
Description : What is the evolutionary advantage of the occurrence of sperm cells and larval stage in the life cycle of sponges?
Last Answer : The sexual reproduction in sponges, in addition to contributing to genetic variability, also facilitates the colonization of farther environments by these beings, since sperm cells and larvae are mobile and can swim in the exterior to compensate the immobility of the adult individual.
Description : Silk thread is obtained from silk moth during (a) pupal stage (b) larval stage (c) nymph stage (d) adult stage.
Last Answer : (a) pupal stage
Description : Addition of a trace of thyroxine or iodine in water containing tadpoles will (a) keep them in larval stage (b) hasten their metamorphosis (c) slow down their metamorphosis (d) kill the tadpoles.
Last Answer : (b) hasten their metamorphosis
Description : .Bladderworm/cysticercus is the larval stage of (a) tapeworm (b) roundworm (c) pinworm (d) liver fluke.
Last Answer : (a) tapeworm
Description : A larval stage occurs in the life history of all members of the group (a) frog, lizard and cockroach (b) Ascaris, housefly and frog (c) housefly, earthworm and mosquito (d) butterfly, frog and mosquito.
Last Answer : (d) butterfly, frog and mosquito.
Description : Larvae of fresh water mussle (L. marginalis) is (a) Tocophor (b) Pedivelligen (c) Glochidium (d) Spat
Last Answer : (c) Glochidium
Description : Explain in brief the characteristic features of Phylum Hemichordata.
Last Answer : Explain in brief the characteristic features of Phylum Hemichordata.
Description : Which of the following statements are true for the Phylum Chordata? (A) In Urochordata, notochord extends from head to tail and it is present throughout their life. (B) In Vertebrata, notochord is present during the embryonic period only. (C ... (C) (b) (C) and (A) (c) (A) and (B) (d) (B) and (C)
Last Answer : (d) (B) and (C)
Description : Name of the phylum to which ‘Arrow worms’ belong to a) Rotifera b) Hemichordata c) Chaetognatha d) Annelida
Last Answer : b) Hemichordata
Description : Assertion : Lateral line system is found in fishes and aquatic larval amphibians. Reason : Lateral line system has receptor of sensory cells derived f
Last Answer : Assertion : Lateral line system is found in fishes and aquatic larval amphibians. Reason : Lateral line ... D. If both Assertion and Reason are false.
Description : During its life cycle fasciola heptica (Liver fluke) Infects its intermadiate host and primary host at the following larval stages respectively
Last Answer : During its life cycle fasciola heptica (Liver fluke) Infects its intermadiate host and primary host ... an cercaria D. Miracidium and metacercaria .
Description : Neurocysticercosis is a preventable parasitic infection caused by larval cysts of A A. Pork Tapeworm B. Beef Tapeworm C. Pin Tapeworm D. Dog Tapeworm
Last Answer : Pork Tapeworm
Description : During the life-cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively (a) redia and miracidium (b) cercaria and redia (c) metacercaria and cercaria (d) miracidium and metacercaria
Last Answer : (d) miracidium and metacercaria.
Description : Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct? (a) It is present only in larval tail in ascidian. (b) It is ... absent throughout life in humans from the very beginning. (d) It is present throughout life in Amphioxus.
Last Answer : (c) It is absent throughout life in humans from the very beginning.
Description : Various types of cartilage can be found in the huma BIOL-91; Short Answer: The larval form of butterflies and moths is more commonly known as what?
Last Answer : ANSWER: caterpillar