PPSC Lecturer Botany BPS-17 Past Paper MCQs 50+

The solved past paper of PPSC Lecturer Botany BPS-17 is published here for the aspirants. It would be helpful for the current candidates who applied for PPSC Lecturer Botany and PPSC Lecturer Biology subject seats in Punjab Public Service Commission. If you have applied for PPSC Lecturer Botany BPS-17, you should start preparing for your PPSC Lecturer Botany exam. 

A lot of past papers, solved papers, guidebooks, and comprehensive books are available in the market as well as online platforms. In this article, I’ve often written about the important objectives in exams. So, keep reading this article till the end to learn all the mcqs regarding PPSC Lecturer Botany. 

PPSC Lecturer Botany BPS-17 Past Paper  MCQs

PPSC Lecturer Botany BPS-17 Past Paper  MCQs

This is the solved PPSC Lecturer Botany BPS-17 Past Paper. All the answers of the objectives are given at the end of the article. Let’s read the mcqs:

Select one option out of four given options

1.. The spores in the Bryophytic plants represent the first cell of the

(a)  Gametophytic Generation

(b)  Sporophytic Generation

(c)  Asexual Generation

(d)  All of these

2. Plants expressing foreign genes introduced by genetic engineering are called

(a)  Transgenes

(b)  Hybrid

(c)  Mutant

(c)  Polyploid

3. An association of species in which both partners benefit is called

(a)  Antagonism

(b)  Competition

(c)  Mutualism

(d)  None of these

4. Autotrophs are primary producers in the

(a)  Food Web

(b)  Food Chain

(c)  Food Series

(d)  Food Security

5. A Multiprotein complex that comprises ATPase in the thylakoid membrane is

(a)  CF0-CF1

(b)  CF1-CF2

(c)  CF0-CF2

(d)  CF2-CF1

6. Set of conditions in which an organism complete its life cycle is

(a)  Niche

(b)  Habitat

(c)  Biome

(d)  Habit

7. Exchange of genetic material between two paired chromosome during meiosis is

(a)  Test cross

(b)  Backcross

(c)  Inbreeding

(d)  None of these

8. Free space in tissue comprising cell wall and intercellular spaces

(a)  Symplast

(b)  Apoplast

(c)  Protoplast

(d)  Amyloplast

9. Chromosome complement with 2n-1 is called

(a)  Disomy

(b)  Nullisomy

(c)  Monosomy

(d)  Trisomy

10. Plants shedding their leaves seasonally are called

(a)  Annuals

(b)  Biannual

(c)  Perennials

(d)  Deciduous

11. Climatically and geographically similar conditions on the earth are called

(a)  Biotope

(b)  Biomes

(c)  Biosphere

(d)  Biography

12. Vernalization is the process in which flowering is promoted by the

(a)  Salt treatment

(b)  Hot treatment

(c)  Cold treatment

(d)  None of these

13. Which of the following contains its own DNA

(a)  Golgi body

(b)  Mitochondria

(c)  Ribosomes

(d)  None of these

14. In chlorophyll four rings of pyrolle forming a complex with the

(a)  Cu atom

(b)  Fe atom

(c)  Mg atom

(d)  K atom

15. Plants growing inside other plant are called

(a)  Endophytes

(b)  Exophytic

(c)  Amphiphytes

(d)  Phaeophyta

16. Chlorophyll d exists in the

(a)  Pyrrophyta

(b)  Phaeophyta

(c)  Cryptophyta

(d)  Rhodophyta

17. An antibiotic called “Chlorellin” derived from the

(a)  Chara

(b)  Spirogyra

(c)  Volvox

(d)  Chlorella

18. Because of extracting _____________ from water and depositing it in their walls, different species of Chara referring to as “Stone Worts”

(a)  Sodium chloride

(b)  Calcium carbonate

(c)  Potassium sulphate

(d)  Potassium nitrate

19. Puccinia graminis caused __________ in wheat

(a)  Yellow and stripe rust

(b)  Brown or orange leaf rust

(c)  Black or stem rust

(d)  Loose green smut

20. Double fertilisation is the characteristic of the

(a)  Gymnosperms

(b)  Bryophytes

(c)  Angiosperms

(d)  Pteridophytes

21. NADH from the Krebs cycle approximately equals to the

(a)  2ATP

(b)  3 ATP

(c)  4 ATP

(d)  6 ATP

22. In mitochondrial electron transport chain, the final c acceptor is

(a)  H2O

(b)  H2O2

(c)  NAD+

(d)  FAD

23. The movement of water from cell to cell via plasmodesmata is called

(a)  Symplastic

(b)  Transmembrane

(c)  Apoplastic

(d)  Facilitated

24. In maize plant the CO2 fixation mechanism is called

(a)  C3 pathway

(b)  C4 pathway

(c)  CAM pathway

(d)  C3-C4 Intermediate

25. Salt loving plants are known as

(a)  Glycophytes

(b)  Halophytes

(c)  Xerophytes

(d)  Mesophytes

26. With the addition of solution to the liquid system, the water potential of the system

(a)  Increased

(b)  Decreased

(c)  Remain stable

(d)  Remain variable

27. The conversion of the pyruvate into acetyl C0A is called

(a)  Glycolysis

(b)  Fermentation

(c)  Oxidative carboxylation

(d)  None of these

28. Between Adenine and thymine there are

(a)  2 hydrogen bonds

(b)  3 hydrogen bonds

(c)  one hydrogen bonds

(d)  4 hydrogen bonds

29. The stage of meiosis in which pairing of homologous chromosome starts is called

(a)  Leptotene

(b)  Zygotene

(c)  Diplotene

(d)  Pachytene

30. A site of the chromosome on which gene is located is called

(a)  Allele

(b)  Locus

(c)  Site

(d)  Trait

31. In a dihybrid cross the ratio of the F2 is

(a)  9:3:3:1

(b)  3:1

(c)  1:2:1

(d)  1:1

32. When a single gene has multiple effects the phenomenon is called

(a)  Codominance

(b)  Epistasis

(c)  Pleiotropy

(d)  Genostasis

33. Lamarck’s theory of evolution is published in the

(a)  1807

(b)  1809

(c)  1808

(d)  1810

34. The book “origin of species” was written by the

(a)  Linnaeus

(b)  Lamarck

(c)  Mendel

(d)  Darwin

35. The interaction between algae and fungi to form lichen is called

(a)  Parasitism

(b)  Mutualism

(c)  Commensalism

(d)  Amensalism

36. The actual place or location where an organism lives is called

(a)  Habitat

(b)  Ecosystem

(c)  Niche

(d)  Biome

37. Which of the biomes has been increased in area by human activities

(a)  Savanna

(b)  Grassland

(c)  Desert

(d)  Coniferous forest

38. Which zone of the lake ecosystem consists of Phyto and ZooPlanktons

(a)  Littoral zone

(b)  Limnetic zone

(c)  Profundal Zone

(d)  Deep water layers

39. Which of the following is the biotic component of the ecosystem

(a)  Producers

(b)  Consumers

(c)  Decomposers

(d)  All of these

40. Pappus found in the compositae is the modification of the

(a)  Calyx

(b)  Bract

(c)  Corolla

(d)  Stamen

41. In malvaceae androecium is characteristically

(a)  Monadelphous

(b)  Didynamous

(c)  Diadelphous

(d)  Tetradynamous

42. The first phylogenetic system of plant classification was proposed by the

(a)  Engler

(b)  Prantl

(c)  Wettstien

(d)  None of these

43. The fruit of mango is

(a)  Berry

(b)  Drupe

(c)  Pome

(d)  Nut

44. Fungal spores produced asexually at tip or side of hyphae are called

(a)  Sporangiophore

(b)  Arthrospore

(c)  Conidia

(d)  Spores

45. Damping off disease is caused by the

(a)  Aspergillus

(b)  Ustilago

(c)  Pythium

(d)  Puccinia

46. Obliquely placed ovary is present in the family

(a)  Rutaceae

(b)  Solanaceae

(c)  Malvaceae

(d)  Labiatae

47. Gynobasic style arises from the base of the ovary. This is the characteristic of the family

(a)  Labiate

(b)  Solanaceae

(c)  Malvaceae

(d)  Compositae

48. Columella is present is the sporangium of

(a)  Spirogyra

(b)  Yeast

(c)  Ulothrix

(d)  Rhizopus

49. Which of the following disease is caused by the fungus

(a)  Cholera

(b)  Rust of Wheat

(c)  T.B.

(d)  Tetanus

50. Target Board effect is caused by the

(a)  Alternaria

(b)  Colletotrichum

(c)  Pyricularia

(d)  Helminthosporium

51. Penicillin was extracted by the

(a)  Flemming

(b)  Huxley

(c)  Lamarck

(d)  Brown

52. Mushroom is a

(a)  Parasite

(b)  Saprophyte

(c)  Photosynthetic

(d)  None of these

53. The sieve elements are the major components of the

(a)  Xylem

(b)  Phloem

(c)  Cambium

(d)  None of these

54. The gametes taking part in sexual reproduction of rhizopus are

(a)  Uninucleate

(b)  Binucleate

(c)  Multinucleate

(d)  Dikaryotic

55. Blue green algae is common name of the

(a)  Xanthophyceae

(b)  Chlorophyceae

(c)  Cyanophyceae

(d)  Charophyceae

PPSC Lecturer Botany Past Paper Answers

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