NET JRF Zoology Question

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NET JRF Zoology Question

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Question Papers of NET JRF Zoology

1. Fluctuation in the distribution of gene frequencies caused by isolation of non-representative samples of the founding population is called
(1) Genome
(2) Genotype
(3) Genetic drift
(4) Gene pool

2. Phenomenon of Industrial melanism in Biston betularia demonstrate
(1) Evolution
(2) Mutation
(3) Directional Natural Selection
(4) Stabilizing Selection

3. Evolution of Homo sapiens occurred in :
(1) Oligocene
(2) Miocene
(3) Pleistocene
(4) Eocene

4. Under Territorial behaviour, Wilson (1975) classified territories into various types. What is Type-B territory ?
(1) Area for resting and mating
(2) Area for nesting and feeding
(3) Area for mating and nesting
(4) Area for resting and feeding only

5. Quick response towards stress is because of .
(1) Androgen
(2) Epinephrine
(3) Corticosteroids
(4) Estrogen

6. In lesion experiment to study eating behaviour, which part of hypothalamus was found as satiety centre ?
(1) Ventro-medial
(2) Dorsal
(3) Lateral
(4) Anterior

7. In biological clock, ‘circadian rhythm’ is term used for
(1) 12hrs
(2) 12 days
(3) 24 days
(4) 24hrs

8. Biological clocks which are synchronized with the moon phases are called
(1) circasynodic clocks
(2) semilunar clocks
(3) circadian clocks
(4) circatidal clocks

9. Which bird travel longest distance during migration ?
(1) Arctic tern
(2) Mallard
(3) Himalayan geese
(4) Night hawk

10. Fish migrates from sea to fresh water and from fresh water to sea but not for breeding are called
(1) Amphidromous fish
(2) Potamodromous fish
(3) Diagamous fish
(4) Oceanodromous fish

11. The type of orientation where the rate of change of direction increases in proportion to the increase in light intensity is called —
(1) Klinokinesis
(2) Orthokinesis
(3) Tropotaxis
(4) Telotaxis

12. When honey bee discovers a food source less than 250 feet away from the hive, it pass on the information to other bees by performing
(1) Waggle dance
(2) Round dance
(3) Abdominal dance
(4) Tail dance

13. According to Heape (1961), which of the following is not a primary reason for fish migration ?
(1) Gametic
(2) Alimental
(3) Climatic
(4) Osmoregulatory

14. The scientist associated with classical conditioning :
(1) J. Romanes
(2) Konard Lorenz
(3) Ivan P. Pavlov
(4) Niko Tinbergen

15. Which type of waves. Are produced from parietal and occipital loses when a man is at rest and with eyes closed ?
(1) Alpha waves
(2) Beta waves
(3) Theta waves
(4) Delta waves

16. When an animal retraces its path to the point where it started from, it is called —
(1) Strato orientation
(2) Zonal orientation
(3) Topographic orientation
(4) Positional orientation

17. Eisenberg (1965) proposed four properties of organised societies. Which of the following is not proposed by him ?
(1) Communication
(2) Cohesion
(3) Division of Labour
(4) Impermanence and Permeability

18. Mermaid’s purse is related to which of the following fish ?
(1) Scoliodon
(2) Scyllium
(3) Hippocampus
(4) Syngnathus

19. Ethologist S. Grossman (1966) discovered a method of activating, eating and drinking circuits in human brain separately. He used which of the following neuro-inhibitors for this ?
(1) Nor-adrenaline
(2) Methylphenethylamine
(3) Crocaine
(4) Dopamine

20. Which chemical trigger’s drinking behaviour when administered in hypothalamus of rat ?
(1) Acetyl choline
(2) Estrogen
(3) Nor-adrenaline
(4) Dopamine

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Objective

21. Which of the following is associated with speech in the brain ?
(1) Broca’s area
(2) Right temporal lobe
(3) Hypothalamus
(4) Pituitary gland

22. Promiscuous mating occurs in
(1) Geese
(2) Chimpanzees
(3) Gibbon
(4) Eagle

23. Carolus Linnaeus system of nomenclature is
(1) Natural
(2) Artificial
(3) Phylogenetic
(4) binomial

24. The level at which the species are characterised and named, is called :
(1) Alpha taxonomy
(2) Beta taxonomy
(3) Gamma taxonomy
(4) Cladistic taxonomy

25. Which phylum has a true coelom ?
(1) Cnidaria
(2) Mollusca
(3) Annelida
(4) Porifera

26. Horse belongs to which of the following order ?
(1) Perissodactyle
(2) Artiodactyla
(3) Proboscidea
(4) Carnivora

27. Five Kingdom System of Classification suggested by R.H. Whittaker is not based on
(1) presence or absence of a well defined nucleus
(2) mode of production
(3) mode of nutrition
(4) complexity of body organisation

28. Retrogressive metamorphosis occurs in
(1) Hemichordata
(2) Cephalochordata
(3) Urochordata
(4) Vertebrata

29. The vertebrate does not have
(1) epidermal scales
(2) claw
(3) tail
(4) cnidoblast

30. In human; Stapes, Hyoid, Thyroid Cartilage, Tracheal Cartilages are modification of
(1) neural tube
(2) notochordal cells
(3) neural plate
(4) pharyngeal gill slits

31. The adult animal of which phylum is radially symmetrical; but their larva exhibits bilateral symmetry ?
(1) Annelida
(2) Arthropoda
(3) Mollusca
(4) Echinodermata

32. Which of the following is a mismatched pair ?
(1) Scales — Reptalia
(2) Combplates — Mollusca
(3) Choanocytes — Porifera
(4) Parapodia — Annelida

33. Which of the following is an egg laying mammal?
(1) Ornithorhynchus
(2) Didelphys
(3) Sorex
(4) Macropus

34. Which of the following is not a order of class Echinoidia of phylum Echinodermata ?
(1) Cidaroida
(2) Didematoida
(3) Clypeasteroida
(4) Ophiurida

35. Which of the following is not a class of phylum Cnidaria ?
(1) Hydrozoa
(2) Scyphozoa
(3) Trematoda
(4) Anthozoa

36. Biradial symmetry is found in which of the following ?
(1) Hydra
(2) Labeo
(3) Beroe
(4) Sponges

37. The phylum of sea mouse is
(1) Mollusca
(2) Cnidaria
(3) Annelida
(4) Arthropoda

38. Which of the following animal belongs to the phylum mollusca ?
(1) Devil fish
(2) Dog fish
(3) Silver fish
(4) Jelly fish

39. Which one of the following kinds of animals are triploblastic ?
(1) Flatworms
(2) Sponges
(3) Ctenophores
(4) Corals

40. Which of the following is not a deuterostome ?
(1) Sea urchin
(2) Earthworm
(3) Sand dollar
(4) Ichthyophis

41. Taxonomy based on maximum number of phenotypic characters is
(1) Phytogenetic system
(2) Artificial system
(3) Natural system
(4) Sonotaxonomy system

42. According to Affinities of Hemichordata with Echinodermata, following is not a larval resemblance :
(1) Presence of apical plate with gensory hairs, eye spots and telotroch
(2) Small, pelagic, transparent and oval
(3) Enterocoelic origin of coeloms
(4) Blastopore becomes the anus

43. Sipunculus is commonly known as
(1) Peanut worm
(2) Beetle worm
(3) Lug worm
(4) Rag worm

44. Which of the following is not a larva of star fish ?
(1) Dipleurula larva
(2) Bipinnaria larva
(3) Brachiolaria larva
(4) Auricularia larva

45. How many arms are present in Antedon ?
(1) 16
(2) 8
(3) 12
(4) 5