Which one of the following statements about certain given animals is correct?
1. Round worms (Aschelminthes) are pseudocoelomates
2. Molluscs are acoelomates
3. Insects are pseudocoelomates
4. Flat worms (Platyhelminthes) are coelomates
Which one of the following groups of animals is bilaterally symmetrical and triploblastic?
(1) Coelenterates (cnidarians)
(2) Aschelminthes (round worms)
(3) Ctenophores
(4) Sponges
Which one of the following pairs of animal comprises ‘jawless fishes’?
(1) Lampreys and eels
(2) Mackerels and rohu
(3) Lampreys and hag fishes
(4) Guppies and hag fishes
Peripatus is a connecting link between
(1) Ctenophora and Platyhelminthes
(2) Mollusca and Echinodermata
(3) Annelida and Arthropoda
(4) Coelenterata and Porifera
Which one of the following in birds, indicates their reptilian ancestry?
(1) Scales on their hind limbs
(2) Four chambered heart
(3) Two special chambers crop and gizzard in their digestive tract
(4) Eggs with a calcareous shell
Which one of the following is not a characteristic of phylum-Annelida?
(1) Closed circulatory system
(2) Segmentation
(3) Pseudocoelom
(4) Ventral nerve cord
Which one of the the following phyla is correctly matched with its two general characteristics?
(1) Arthropoda − Body divided into head, thorax and abdomen and respiration by mouth
(2) Chordata − Notochord at early stage only and separate anal and urinary openings to the outside
(3) Echinodermata − Pentamerous radial symmetry and mostly internal fertilization
(4) Mollusca − Normally oviparous and development through a trochophore or veliger larva
Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature?
|
Animals |
|
Morphological Feature |
(1) |
Liver fluke, sea anemone, sea cucumber |
– |
Bilateral |
(2) |
Earthworm, prawn, scorpion |
– |
Jointed appendages |
(3) |
Scorpion, spider, cockroach |
– |
Ventral solid central nervous system |
(4) |
Cockroach, locust, Taenia |
– |
Metameric segmentation |
Which one of the following pairs is mismatched?
(1) |
Pila globosa |
– |
pearl |
(2) |
Apis indica |
– |
honey |
(3) |
Kenia lacca |
– |
lac |
(4) |
Bombyx mori |
– |
silk |
What is common between parrot, platypus and kangaroo?
(1) Homeothermy
(2) Toothless jaws
(3) Functional post-anal tail
(4) Oviparity