Plant Kingdom Mock Test – Class 11 Biology

1. Following normal meiosis of a gymnosperm megaspore mother cell, the usual developmental outcome is that:

2. Rhizoids provide a useful liverwort-moss distinction because moss leafy shoots commonly possess:

3. A section through a gymnosperm male strobilus shows many scale-like structures arranged around an axis, each carrying sacs filled with developing pollen grains. The scales and sacs are, respectively:

4. A developmental change causes every dwarf shoot of Ginkgo to elongate until it resembles the main branch. The figure character most directly obscured will be:

5. A moss protonema is correctly interpreted as:

6. A labelled Ginkgo sketch shows a seed-bearing short branch arising from a much longer axis. The short branch should be labelled:

7. The sexual reproductive range of Chlorophyceae is accurately represented by:

8. Psilotum is placed in:

9. A taxonomist compares two flowering plants using external morphology, internal anatomy, embryological features and chemical constituents. This approach most closely represents:

10. The pair in which both algae are cited as examples of oogamy is:

11. The principal function of bryophyte rhizoids is to:

12. In leafy liverworts, the small leaf-like appendages are commonly arranged:

13. Consider the following statements about gymnosperms.
I. They are vascular seed plants.
II. Their ovules are not enclosed within ovaries.
III. Their seeds are enclosed within fruits.
IV. Their dominant plant body is the sporophyte.

14. The sequence most consistent with sexual reproduction in a red alga is:

15. A seedless land plant has true roots, stem and leaves supplied with xylem and phloem. Its conspicuous main plant body is diploid. It is best identified as:

16. The relationship between reserve food and pyrenoids in Chlorophyceae is best stated as:

17. A treatment destroys every archegonium in a mature gymnosperm female gametophyte but leaves the rest of the ovule intact. The reproductive event most directly prevented is:

18. A described Selaginella figure shows a horizontal axis bearing small leaves, true roots arising below and upright branches above. The labelled plant body represents:

19. Among angiosperms, Wolffia illustrates:

20. Match each evidence source with the observation it most directly supplies. A Column II entry is used once.

21. Bentham and Hooker are associated with a natural system of classification developed for:

22. Destruction of all archegonia on a mature prothallus while antheridia remain functional will directly prevent:

23. A seed plant is only tall but has exposed ovules and naked seeds. Its short stature:

24. Match each brown-algal example with the most appropriate description. A Column II entry is used once.

25. A hypothetical seed plant originally has exposed ovules. A mutation causes every ovule to develop permanently inside an ovary that later forms a fruit. This changed reproductive boundary would:

26. Two plant populations have nearly identical vegetative morphology. One population nevertheless has a distinct chromosome complement and a consistently different profile of chemical constituents. The strongest classification decision is to:

27. Gymnosperms reduce dependence on external water for fertilisation through the combined action of:

28. If a gymnosperm male gamete and egg each have chromosome condition , their fusion produces a zygote with chromosome condition:

29. A student labels every fusion between unequal-sized algal gametes as oogamy. The label is too broad since oogamy specifically requires:

30. A small, inconspicuous, multicellular and mostly photosynthetic thalloid body develops from a pteridophyte spore. It is the:

31. An algal class shows vegetative fragmentation, non-motile asexual spores, non-motile sexual cells and oogamy followed by complex post-fertilisation development. This reproductive combination belongs to:

32. The major progression in plant-body organisation across the principal plant groups is most accurately represented by:

33. A pollen tube reaches an archegonium and releases male gametes nearby, but fusion with the egg does not occur. The most accurate conclusion is:

34. An algal fragment differs fundamentally from a zoospore in that the fragment:

35. Pyrenoids in green algae are:

36. A student claims that recording many superficial vegetative characters automatically converts an artificial system into a natural one. The best evaluation is:

37. Calling gymnosperms seedless plants is incorrect because they:

38. Arrange the events from pollination to gymnosperm fertilisation.
P. Male gametes are released near an archegonium.
Q. A pollen grain reaches the ovule opening.
R. Fusion with an egg produces a zygote.
S. The pollen tube grows toward the archegonia.

39. A seed plant has ovules developing inside flowers and mature seeds enclosed by fruits. This evidence excludes gymnosperms mainly because gymnosperms:

40. Consider the following habitat statements for Phaeophyceae.
I. Most members occur in salt water.
II. Some may occur in brackish water.
III. Freshwater occurrence is rare.
IV. The class is restricted exclusively to freshwater.

41. The following matrix records the absence or presence of four observable characters in three plants, using for absence and for presence.

Computer-assisted comparison of this coded matrix is characteristic of:

42. A spherical organism consists of many cells organised into a coordinated colony. Among the standard algal examples, this body form is represented by:

43. Among algae, bryophytes, pteridophytes, gymnosperms and angiosperms, the first group in the sequence to possess xylem and phloem is:

44. Arrange the stages leading from a moss spore to the mature leafy gametophyte.
P. Upright leafy axes develop.
Q. A protonema forms.
R. Lateral buds arise on the secondary protonema.
S. A haploid spore germinates.

45. Multicellular bryophyte antheridia produce:

46. The most reliable distinction between gymnosperms and angiosperms is that:

47. Consider the following statements about pteridophyte fertilisation.
I. Antheridia and archegonia occur on the prothallus.
II. Water carries antherozoids toward the archegonium.
III. Fusion produces a diploid zygote.
IV. The zygote develops into the dominant gametophyte.

48. Angiosperms contribute directly to human needs by providing:

49. Why are the male and female gametophytes of gymnosperms regarded as highly reduced?

50. Arrange the stages leading from gymnosperm pollination to formation of a naked seed.
P. The ovule develops into a seed.
Q. A pollen tube carries male gametes inward.
R. A zygote forms and develops into an embryo.
S. Pollen arrives at the ovule opening.