Which one of the following characteristics is not shared by birds and mammals?
(1) Breathing using lungs
(2) Viviparity
(3) Warm blooded nature
(4) Ossified endoskeleton
Which of the following features is not present in the phylum – Arthropoda?
(1) Metameric segmentation
(2) Parapodia
(3) Jointed appendages
(4) Chitinous exoskeleton
Select the taxon mentioned that represents both marine and freshwater species
(1) Echinoderms
(2) Ctenophora
(3) Cephalochordata
(4) Cnidaria
Which one of the following living organisms completely lacks a cell wall?
(1) Cyanobacteria
(2) Sea-fan (Gorgonia)
(3) Saccharomyces
(4) Blue-green algae
Planaria posses high capacity of
(1) metamorphosis
(2) regeneration
(3) alternation of generation
(4) bioluminescence
A marine cartilaginous fish that can produce electric current is
(1) Pristis
(2) Torpedo
(3) Trygon
(4) Scoliodon
Infection of Ascaris usually occurs by
(1) drinking water containing egg of Ascaris
(2) eating imperfectly cooked pork
(3) tse-tse fly
(4) mosquito bite
In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remining three are correct?
| Genus Name | Two characters | Phylum |
| 1. Pila | (i) Body segmented (ii) Mouth with Radula |
Mollusca |
| 2. Asterias | (i) Spiny skinned (ii) Water vascular system |
Echinodermata |
| 3. Sycon | (i) Pore bearing (ii) Canal system |
Porifera |
| 4. Periplaneta | (i) Jointed appendages (ii) Chitinous exoskeleton |
Arthropoda |
What will you look to identify the sex of the following?
| 1. | Male frog – a copulatory pad on the first digit of the hind limb |
| 2. | Female cockroach – anal cerci |
| 3. | Male shark – claspers bone on pelvic fins |
| 4. | Female Ascaris – sharply curved posterior end |
In which one of the following, the genus name, its two characters and its class/phylum are correctly matched?
| Genus Name | Two characters | Class/Phylum | ||
| 1. | Salamandra | (i) | A tympanum represents ear | Amphibia |
| (ii) | Fertilization is external | |||
| 2. | Pteropus | (i) | Skin possesses hair | Mammalia |
| (ii) | oviparous | |||
| 3. | Aurelia | (i) | Cnidoblasts | Coelenterata |
| (ii) | Organ level of organization | |||
| 4. | Ascaris | (i) | Body segmented | Annelida |
| (ii) | Males and Females distinct |
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