15353.In many animals the rapid change from the immature organism to the adult (change from larva to adult in insects) means
Cephalization
Molting
Metamorphosis
Endothermy
15356.Taxonomically a species is
A group of evolutionary related populations
Population having same evolutionary basis
Category to which most taxonomic information is attached
Fundamental unit is phylogenetic history of organisms
15357.Silk fibre contains which proteins?
Mucin and serine
Fibrin and serine
Collagen and elastin
Fibroin and sericine
15358.Reptilian feature of Archaeopteryx is
U shaped furcula
Presence of abdominal ribs
Feathers with barbules
Presence of a beak
15359.In cephalopod, the brain is formed from the fusion of ______.
Spinal cord
Ganglia
Eye tissue
Trochophore
15361.Radial symmetry is usually associated with
lower grade of organization
creeping mode of life
aquatic life
sedentary mode of life
15362.Which organism possesses characteristics of plants and animals?
Bacteria
Monera
Euglena
Mycoplasma
15365.Peripatus is a connecting link between
Coelenterata and Porifera
Ctenophora and Platyhelminthes
Mollusca and Echinodermata
Annelida and Arthropoda
15368.Ornithorhynchus is a
fossil bird
flightless bird
connecting link between reptiles and birds
mammal
15369.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. Aurelia | (a) Cnidoblasts (b) Organ level of organization | Coelenterata |
| 2. Ascaris | (a) Body segmented (b) Males and females distinct | Annelida |
| 3. Salamandra | (a) A tympanum represents ear (b) Fertilization is external | Amphibia |
| 4. Pteropus | (a) Skin possesses hair (b) Oviparous | Mammalia |
1
2
3
4
15372.Insect mouthparts are adapted for different functions in different species. Mouthparts of houseflies are used for
Siphoning
Piercing and sucking
Sponging and lapping
Biting and chewing