Which one of the following phyla is correctly matched with its two general characteristics?
Arthropoda - Body divided into head, thorax and abdomen and respiration by tracheae.
Chordata - Notochord at some stage and separate anal and urinary openings to the outside
Echinodermata - Pentamerous radial symmetry and mostly internal fertilisation
Echinodermata - Pentamerous radial symmetry and mostly internal fertilisation
A.
Arthropoda - Body divided into head, thorax and abdomen and respiration by tracheae.
Arthropoda is the largest phylum of the animal kingdom. The body of an arthropod is divisible into head, thorax and abdomen. Head and thorax often fused to form a cephalothorax. The respiration takes place by general body surface, gills tracheae or book lungs.
Molluscs are dioecious or monoecious, one or more gonads with conducts, opening into renal ducts or to the exterior. The fertilisation is external or internal, development direct or through free larval forms.
Echinoderma has pentamerous radial symmetry derived from an original bilateral symmetry. The fertilization is external, development indirect through free - swimming larvals forms.
Chordates are sharply distinguished from non-chordates by the presence of notochord, dorsal tubular central nervous system and phayngeal gills slits.
In which one of the following sets of animals do all the four give birth to young ones?
Lion, bat, whale, ostrich
Platypus, penguin, bat, hippopotamus
Shrew, bat, cat, kiwi
Shrew, bat, cat, kiwi
Which one of the following is a matching set of a phylum and its three examples?
Cnidaria — Bonellia, Physalia, Aurelia
Platyhelminthes — Planaria, Schistosoma, Enterobius
Mollusca — Loligo, Teredo, Octopus
Mollusca — Loligo, Teredo, Octopus
Biradial symmetry and lack of cnidoblasts are the characteristics of
Starfish and sea anemone
Ctenoplana and Beroe
Aurelia and Paramecium
Aurelia and Paramecium
Two commons characters found in centipede, cockroach and crab are
compound eyes and anal cerci
jointed legs and chitinous exoskeleton
green gland and tracheae
green gland and tracheae
In case of poriferans the spongocoel is lined with flagellated cells called :
Ostia
Oscula
Choanocytes
Choanocytes
Which of the following represents order of 'Horse'?
Equidae
Perissodactyla
Caballus
Caballus
Metameric segmentation is the characteristic of
Platyhelminthes and Arthropoda
Echinodermata and Annelida
Annelida and Arthropoda
Annelida and Arthropoda
What is common between parrot, platypus and kangaroo?
Homeothermy
Toothless jaws
Functional post-anal tail
Functional post-anal tail
Frog's heart when taken out of the body continues to beat for some time
Select the best option from the following statements
(a) Frog is a poikilotherm
(b) Frog does not have any coronary circulation
(c) Heart is 'myogenic' in nature
(d) Heart is autoexcitable
Only (c)
Only (d)
(a) & (b)
(a) & (b)
