http://avxhome.se/blogs/Torries

Match The columns

26. Match Column I with Column II.
    Column I Column II
    A. Carpospores (i) Ectocarpus
    B. Fouling of ships (ii) Sphagnum
    C. Coenobium (iii) Equisetum
    D. Peat moss (iv) Porphyra
    E. Scouring (v) Volvox
    F. Ephedrine (vi) Ephedra


27. Match Column I with Column II. (There can be more than
    one match for items in Column I)
    Column I Column II
    A. Agar (i) Gelidium
    B. Food supplement (ii) Selaginella
    for space travellers
    C. Heterosporous (iii) Chlorella
    pteridophytes
    D. Triploid (iv) Salvinia
    endosperm
    E. Dwarf shoots (v) Eucalyptus
    (vi) Gracilaria
    (vii) Spirulina
    (viii) Acacia
    (ix) Pinus
    (x) Ginkgo

passage Based Questions

28.(A) Complete the given passage with appropriate words or
phrases.

The plant body of liverworts is (i) and may be (ii) or (iii).
leaves when present are without (iv) and branching is
generally (v). (vi) are present in capsule of liverworts
whereas (vii) are absent.
(B) Read the given passage and correct the errors wherever
present.
Ferns are seed producing vascular plants which inhabit
dry areas. They constitute the smallest living group of
primitive vascular plants. Ferns dominated the earth in
permian period. leaves are large and called ramenta.
Mature leaves show circinate ptyxis. younger parts of their
stem, leaves and petiole possess hairs called fronds.

Assertion & reason

In each of the following questions, a statement of Assertion
(A) is given and a corresponding statement of Reason (R)
is given just below it. Of the statements, mark the correct
answer as :

(a) if both A and R are true and R is the correct explanation

of A

(b) if both A and R are true but R is not the correct explanation

of A

(c) if A is true but R is false

(d) if both A and R are false.

29. Assertion : In Angiosperms, the sporophylls are
    aggregated to form flowers.
    Reason : In Gymnosperms, the sporophylls are aggregated
    to form cones.


30. Assertion : Syngamy is generative fertilisation and
    triple fusion is vegetative fertilisation in Angiosperms.
    Reason : Both male and female gametes are involved
    in syngamy whereas only one male gamete and two
    vegetative nuclei are involved in triple fusion.


31. Assertion : In Angiosperms, all the cells of embryo sac
    are haploid.
    Reason : In Angiosperms, embryo sac formation is
    preceded by meiosis.


32. Assertion : Cycas is also called living fossil.
    Reason : Cycas possesses a number of characters of
    extinct Pteridosperms and Cycads.


33. Assertion : True stem and leaves are absent in
    Bryophytes.
    Reason : In Bryophytes sporophyte is parasitic over
    gametophyte.


34. Assertion : Bryophytes especially mosses form dense
    mats over the soil and prevent soil erosion.
    Reason : Marchantia often grows in acidic marshes
    and produces peat.


35. Assertion : Gymnosperms do not attain great heights.
    Reason : Roots and vascular tissues are absent in
    Gymnosperms.


36. Assertion : Both green algae and higher plants possess
    the same type of chlorophylls, a and b.
    Reason : Cell walls of higher plant possess cellulose
    whereas algal cell walls are made up of chitin.


37. Assertion : Colony of Volvox called coenobium is hollow
    and has fixed number of cells.
    Reason : The alga Volvox rotates during swimming,
    therefore also known as rolling alga.


38. Assertion : In green algae sexual reproduction occurs
    through palmella stage.
    Reason : In palmella stage two flagellated, thick walled
    cellls lie close to each other embedded in mucilagenous
    mass.