Question Bank No: 2

1. The most vital process for the existence of life on earth

 a)Communication in animals
 b)Photosynthesis by plants
 c)Reproduction in plants and animals
 d)Reproduction in animals

2. The enzyme used in PCE is

 a)RNA polymerase
 b)Ribonuclease
 c)DNA polymerase
 d)Endonuclease

3. Jumping Genes were first discovered in

 a)Mice
 b)Corn
 c)Fruitfly
 d)Snap dragon

4. The molecule that is called the carrier of information

 a)Genes
 b)DNA
 c)RNA
 d)Nucleic acid

5. Heavy DNA means

 a)DNA with P32
 b)DNA with P35
 c)DNA with N14
 d)DNA with N15

6. The artificial plasmid produced by Balivar and Rodriguez is

 a)Cosmid
 b)PUC8
 c)RBR 322
 d)YAC

7. The first gene therapy was done by

 a)H.O. Smith
 b)Sarrymullis
 c)Alec Jeffroys
 d)E.M. Southern

8. Smallest angiosperm plant is

 a)Limnophyll
 b)Hydrilla
 c)Wolffia
 d)Rafflesia

9. A monocarpic angiosperm in the following is

 a)Tectona grandis
 b)Theobroma calao
 c)CoCos nucifera
 d)Corypha umbranculi for a

10. Sex organs of ferns are present in

 a)Sporophyll
 b)Sorus
 c)Sporangia
 d)Protonema

11. Dominant phase in bryophyte and algae is

 a)Haploid gametophyte
 b)Haploid saprophyte
 c)diploid gametophyte
 d)Diploid sporophyte

12. Seed plants are given under the class of

 a)Cryptogamae
 b)Phanengamae
 c)Monandria
 d)diandrea

13. Vasculum is

 a)Taxonomic category
 b)Type of vascular bundle
 c)Mycorrhiza
 d)Box for carrying collected specimen

14. The method of classification called cladistics is based on

 a)Natural system
 b)Artificial system
 c)Evolutionary history
 d)Mutation theory

15. Bacterium used widely in biogas production are

 a)Methanogen
 b)Eubacteria
 c)Peritrichous
 d)Amphitrichous

16. Species inhabiting the same geographical area are

 a)Sibling species
 b)Sympatric species
 c)Allopatric
 d)Taxonomic

17. An aquatic fern used as biofertilizer is

 a)Salvinia
 b)Ophiglossum
 c)Selaginella
 d)Azolla

18. The only group of plant kingdom where sporphyte as well as gemtophyte are independent

 a)Gymnosperm
 b)Pteridophyte
 c)Angiosperm
 d)Bryophyte

19. The first plant that appear in a forest area fter a fire are ferns. This is due to the survival of

 a)Spores
 b)Leaves
 c)Fronds
 d)Rhizome

20. Which of the following is used by gardeners to keep cut plants moist during propagation?

 a)Sphagnum
 b)Riccia
 c)Marchantia
 d)Anthoceros

21. Stored food in red alga is

 a)Laminarin
 b)Fucoxanthin
 c)Floridean starch
 d)Phycoerythrin

22. The thallus is differentiated into stipe, holdfast ad lamina in

 a)Laminaria
 b)Alaria
 c)Kelps
 d)Sargassum

23. Accessory pigments which enable red alga to thrive in deep marine habitat.

 a)Laminarin
 b)Fucoxanthin
 c)Manital
 d)Phycobilins

24. Fruiting body of basidiomycetes are

 a)Ascocarp
 b)Basidiocarp
 c)Mesocarp
 d)Epicarp

25. An edible mushroom is

 a)Agaricus compoestris
 b)Rhizopus
 c)Amanita
 d)Peziza

26. Most fungi have cell wall made of

 a)Suberin
 b)Chitin
 c)Cellulose & Pectin
 d)Cellulose

27. Bacterium with flagellum as over the body is

 a)Atrichous
 b)Monaotrichous
 c)Peritrichous
 d)Amphitrichous

28. Bacteria which can live in the absence of oxygen

 a)Lophotrichous
 b)Aamphitrichous
 c)Monaotric
 d)Peritcichous

29. A non toxic protein rich cyanobacterium used aas food

 a)Nostoc
 b)Anabaena
 c)Aulosira
 d)Spirulina

30. Five kingdom classification was proposed by

 a)Linnaeus
 b)Whittaker
 c)Copeland
 d)Haeckel

31. What does 'Bt' Stands for in the crop Bt- Cotton's

 a)Biotechnology
 b)Best type
 c)Bacillus of mentosa
 d)Bacillus thuringiensis

32. Who confirmed the semi conservative DNA replication

 a)Griffith
 b)Hershey & Chase
 c)Singer & Nicholson
 d)Messelson and Stahl

33. A haploid set of all the genes present in a gamete is called

 a)Genotype
 b)Phenotype
 c)Genome
 d)Gene pool

34. Molecular scissors that can cut DNA at specific site

 a)Restriction endonuclease
 b)Pectinase
 c)Cellulase
 d)Polymerase

35. The smallest non-genetic RNA in a Eucaryotic cells is

 a)m RNA
 b)t RNA
 c)r RNA
 d)Viral RNA

36. Which of the following type of crossing shows genotype and phenotype cross 1: 2 : 1

 a)Monohybrid cross
 b)Multiple alleles
 c)Epistasis
 d)In complete dominance

37. Monohybrid test cross ratio is

 a)1 : 2 : 1
 b)3 : 1
 c)1 : 1
 d)9 : 7

38. Water soluble vitamins in the following are?

 a)Vit. D
 b)Vit E.
 c)Vit K
 d)Vit C

39. Pure fraction of cellular components can be obtained

 a)Differential centrifugation
 b)X- ray refraction
 c)Calorimetry
 d)Chromatography

40. The active form of Vit B2 is

 a)NAD
 b) NADP
 c)GTP
 d)FAD

41. Food storage poly saccharides in a cell includes

 a)Cellulose
 b)Chitin
 c)Peptidoglycan
 d)Starch

42. Protoplasm of a cell coagulates at a temperature of

 a)50o C
 b)60oC
 c)70o C
 d)75o C

43. Fine cytoplasmic strands which connects adjacent cell contents are

 a)Microtubules
 b)Microfilament
 c)Plasmodesmata
 d)Microvilli

44. Fruits and seeds which are either sticky or with hooks and spines are capable of undergoing

 a)Anemochory
 b)Hydrochory
 c)Airochory
 d)Forced zoochory

45. Fused petals of a flower is called

 a)Gamophyllous
 b)Gamopetalous
 c)Polyphyllous
 d)Polaypetalous

46. Opening of flowers in cymose inflorescence is

 a)Centrifugal
 b)Centripetal
 c)Acropetal
 d)Basipetal

47. Leaves that arise from branches are called

 a)Cauline
 b)Radical
 c)Foliar
 d)Ramal

48. Pairing of homologous chromosome occur during

 a)Zygonema
 b)Pachynema
 c)Leptonema
 d)Diplonema

49. Insulin crystal are found in

 a)Wheat root
 b)Mango root
 c)Dahlia root
 d)Coconut root

50. Stipule modification into spine is seen in

 a)Canthium
 b)Rosa
 c)Zizypus
 d)Citrus