Most Important gymnosperms MCQ's : Botany Knowledge

Most Important gymnosperms mcqs : Botany Knowledge

Gymnosperm is a group of nonflowering plants possessing naked seeds.In this article, we will explore 50 multiple-choice questions (MCQ) related to gymnosperms to test your knowledge. Enjoy the journey through time as we delve into the fascinating world of gymnosperms ! 

1. In which of following group would you place a plant which produce seed but lacks flowers 

(a) Fungi

(b) Pteridophyte  

(c) Bryophytes

(d) Gymnosperms

Answer: (d)  `

2. A Gymnospermic plant 

(a) Bear flower 

(b) Exhibit no vascular tissue  

(c) Produce seeds in cones

(d) Does not produce seeds in cones

Answer: (c)  

3. Megasporophyll is the term used in Gymnosperm to denote 

(a) Carpels

(b) Stamens

(c) Leaves

(d) Female cone

Answer: (a) 

4. The megasporium is also known as 

(a) Ovule

(b) Nucellus

(c) Fruit

(d) Micropyle

Answer: (b)  

5. Perisperm is 

(a) Outgrowth of the outer integument

(b) Surviving nucellus in the seed

(c) Outgrowth of funicles

(d) All of these 

Answer: (b)  

6. Gymnosperm is differ from angiosperm 

(a) Having seeds

(b) Having fruits

(c) having naked ovules

(d) None of these

Answer: (c)  

7. Alternation of generation is exhibited by 

(a) Bryophytes

(b) Pteridophytes 

(c) Gymnosperms 

(d) All plants 

Answer: (c)  

8. In which of the following feature angiosperm resemble gymnosperm 

(a) Presence of ovules 

(b) Presence of vessel 

(c) Nature of endosperm 

(d) Mode of fertilization 

Answer: (b)  

9. Endosperm in gymnosperm is formed 

(a) At the time of fertilization 

(b) Before fertilization 

(c) After fertilization 

(d) Alone with the development of embryo.

Answer: (b)  

10. In gymnosperm pollination is exclusively by 

(a) Animals

(b) Wind 

(c) Insects

(d) Water

Answer: (b)  

11. Phloem of gymnosperm differ from angiosperm

(a) Having parenchyma 

(b) Having no companion cells 

(c) Having no sieve tubes

(d) Having no sclerenchyma 

Answer: (b)  

12. Largest sperms are found in 

(a) Pinus

(b) Cedrus

(c) Cycas

(d) Gnetum 

Answer: (c)  

13. Zooidogamy is seen in 

(a) Cycas 

(b) Gnetum

(c) Pinus 

(d) Angiosperm 

Answer: (a)

14. Coralloid roots are found in 

(a) Cycas 

(b) Pinus

(c)  Dryopteris

(d) Lycopodium

Answer: (a)  

15. The most advanced order in gymnosperms 

(a) Cycadales

(b) Coniferales

(c) Gnetales

(d) Taxales

Answer: (c)  

16. In the leaf of Pinus has 16 chromosomes (2n= 16), what will be the number of chromosomes in its endosperm?

(a) 8

(b) 16

(c) 24

(d) 32

Answer: (a)  

17. Which of the following has multiciliate male gametes?

(a) Ulothrix

(b) Cycas

(c) Pogonatum

(d) Cucurbita

Answer: (b)  

18. Which of the following gymnosperms shows the complete absence of archegonia in their ovules? 

(a) Cycas

(b) Ephedra

(c) Gnetum

(d) Ginkgo

Answer: (c) 

19. The ovuliferous scale of Pinus is a part of which of the following? 

(a) Megasporophyll

(b) Angiosperms

(c) Pteridophytes

(d) Bryophytes

Answer: (a)  

20. The smallest gymnosperm is known as: 

(a) Cycas revoluta

(b) Bowenia spectabilis

(c) Zamia pygmaea

(d) Ceratozamia mexicana

Answer: (c)  

21. Diploxylic vascular bundles are found in 

(a) Pinus

(b) Cycas

(c) Ephedra

(d) Pteris

Answer: (b)  

22. Transfusion tissue occurs in 

(a) Needle of Pinus

(b) Leaflet of Cycas

(c) Leaves of Eucalyptus

(d) None of these

Answer: (b)

23.Winged pollen grains are produced by 

 (a) Cycas

(b) Ephedra

(c) Pinus

(d) Ginkgo

Answer: (c) 

24. In which of the following vessels are found? 

(a) Lycopodium

(b) Adiantum

(c) Cycas

(d) Ephedra

Answer: (d) 

25. If the somatic chromosome number in Cycas is 2n. What will be the number of chromosomes in the endosperm cell? 

(a) n

(b) 2n

(c) 3n

(d) 6n

Answer: (a)  

26. Inverted omega shaped ring of vascular bundles are found in: 

(a) Rachis of Cycas

(b) Leaflet of Cycas

(c) Root of Cycas

(d) Leaves of Pinus

Answer: (a)  

27. The microsporangia in Cycas microsporophylls are present on

(a) In sporophyll axis

(b) Along the margins

(c) Adaxial side

(d) Abaxial side 

Answer: (d)  

28. Which of the following woods will be non porous?

(a) Pine wood

(b) Sal wood

(c) Sheesham wood

(d) Teak wood

Answer: (a)  

29. Which of the following characters is common in fern and cycas?

(a) Secondary growth and compound leaf

(b) Sporophyll and secondary growth

(c) Circinate vernation and compound leaves

(d) Circinate vernation and secondary growth

Answer: (c)  

30. Chilgoza is obtain from

(a) Pinus roxburghii

(b) Pinus geradiana

(c) Pinus khasiana

(d) Taxus baccata

Answer: (b)  

31. In gymnosperms, the ovules typically are 

(a) bitegmic and anatropous

(b) bitegmic and orthotropous

(c) unitegmic and orthotropous

(d) unitegmic and anatropou

Answer: (c)

32. Tallest known gymnosperm is

(a) Pinus

(b) Ginkgo

(c) Sequoia

(d) Ephedra

Answer: (c)

33. Inverted omega-shaped organization of vascular bundles is seen in

(a) cycas root

(b) cycas stem

(c) cycas leaflet

(d) cycas rachis

Answer: (d)

34. Phanerogams without the ovaries are

(a) angiosperms

(b) pteridophytes

(c) gymnosperms

(d) all the above

Answer: (c)

35.Gymnosperms are also called soft wood spermatophytes because they lack

(a) Cambium

(b) Phloem fibres

(c) Thick walled tracheids

(d) Xylem fibres

Answer :( d)

36.Cycas is classified as gymnosperm due to its

(a) motile sperms

(b) fruit formation

(c) naked ovule

(d) phycnoxylic wood

Answer: (c) 

37. The male gametes of Cycas are ………………………………………………………………………… in size and largest in plant kingdom.

a) 180-210 µ

b) 350-450 µ

c) 500-650 µ

d) 630-750 µ

Answer: (a) 

38. 1.Conifers are adapted to tolerate extreme environmental conditions because of

(a) broad hardy leaves

(b) superficial stomata

(c) thick cuticle

(d) presence of vessels

Answer : (c)

39. Which of the following gymnospermic order includes all fossils plants 

(a) Cycadofilicales

(b) Coniferales

(c) Gnetales

(d) Cycadales

Answer : (a)

40. In gymnosperms, the ovule is  naked because 

(a) Ovary wall is absent 

(b) Integument is absent 

(c) Perianth is absent 

(d) Nucellus is absent 

Answer : (a)

41. In gymnosperms the pollen chamber is represents

(a) A cell in the pollen grain in which the sperm are formed 

(b) A cavity in the ovule in which the pollen grains are stored  after pollination 

(c) An opening in the megagametophyte through which pollen tubes approaches the egg

(d) The microsporangium in which pollen grains are develop

Answer : (b)

42. Consider the following statements regarding gymnosperms and choose the correct option

1.In gymnosperms male and female gametophytes have an independent existence

2. The multicellular female gemetophyte is retain with in the megasporangium

3.The gymnosperms are heterosporous of these statements 

(a) 1 and 2 are true but 3 is false

(b) 2 and 3 are true but 1 is false 

(c) all are false 

(d) all are false 

Answer : (b)

43. The lateral conduction in gymnospermic leaf by  

(a)Veins

(b) Xylem parenchyma

(c) Transfusion tissue 

(d) Medullary rays 

Answer : (c)

44. The phenomenon of sulphur shower in the pine forest is due to 

(a) Presence of sulphur

(b) Presence of insects 

(c) Large number of fruit 

(d) Release of  pollen grains in prodigious amount 

Answer : (d)

45. Bars of Sanio are present in tracheid of 

(a) Cycas

(b) Pinus

(c) both a and b

(d) None of these 

Answer : (b)

46. The endosperm in gymnosperms is commonly 

(a) Haploid 

(b) Diploid 

(c) Triploid 

(d) Polyploid

Answer : (a)

47. The anatomy of Pinus needles reflectes   the features of  a

(a) Mesophytes 

(b) Xerophytes 

(c) Hydrophytes

(d) Epiphytes

Answer : (b)

48. Which of the following gymnosperm is said to have double fertilization 

(a) Pinus

(b) Ginkgo

(c) Cycas

(d) Ephedra

Answer: (d)

49. Cercinate venation is found in the leaf of 

(a) Cycas

(b) Gnetum

(c) Taxus

(d) Ephedra

Answer: (a)

 50. The most medicinally important gymnosperm is 

(a) Pinus

(b) Ginkgo

(c) Sequoia

(d) Ephedra

Answer: (d)