Q. No.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
Ascaris is characterised by
(1) absence of true coelom but presence of metamerism
(2) presence of neither true coelom nor metamerism
(3) presence of true coelom but absence of metamerism
(4) presence of true coelom and metamerism (metamerisation)
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
Which one of the following is a matching pair of a body feature and the animal possessing it?
|
(1) |
Post-anal tail |
– |
Octopus |
|
(2) |
Ventral Central nervous system |
– |
Leech |
|
(3) |
Pharyngeal gills slits absent in embryo |
– |
Chamaeleon |
|
(4) |
Ventral heart |
– |
Scorpion |
Which of the following pairs are correctly matched?
|
Animals |
Morphological features |
||
|
A. |
Crocodile |
– |
4-chambered heart |
|
B. |
Sea urchin |
– |
Parapodia |
|
C. |
Obelia |
– |
Metagenesis |
|
D. |
Lemur |
– |
Thecodont |
(1) A, C and D
(2) B, C and D
(3) Only A and D
(4) Only A and B
What is true about Nereis, Scorpion, Cockroach and Silver fish?
(1) They all have jointed paired appendages
(2) They all possess dorsal heart
(3) None of them is aquatic
(4) They all belong to the same phylum
What is common to whale, seal and shark?
(1) Seasonal migration
(2) Thick subcutaneous fat
(3) Convergent evolution
(4) Homeothermy
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