BOTANY – 2003, SECTION B

SECTION B

5.       Answer  any FOUR of the following : (The answer to each subsection should not exceed 150 words):

(a)    Make a comparative study of the following families giving floral formula and floral diagram. Give important differentiating morphological features only.

(i)                  Musaceae and Liliaceae

(ii)                Asclepiadaceae and Verbenaceae

(iii)               Euphorbianceae and Malvanceae

(iv)              Solanaceae and Rubiaceae

(b)   Draw neat labeled diagrams of the following : (No description)

(i)                  T.S. coralloid root of Cycas

(ii)                L.S. Ginkgo seed

(iii)               L.S. Pinus ovule

(iv)              T.S. leaf of Gnetum

(c)    Write notes on:

(i)                  Salient features of floral structure of Magnolia grandiflora

(ii)                L.S. of flower of Rosa species and floral diagram

(iii)               L.S. of female flowed of Cucurbita maxima and its floral formula

(iv)              Economic importance of the family Orchidaceae

(d)   Write short notes on the following giving suitable diagrams wherever required:

(i)                  Chemical preservatives and dyes used in anatomical studies

(ii)                Anatomy of phyllode

(iii)               Lenticels- structures and function

(iv)              Cambium – structure and function

(e)   Answer the following:

(i)                  Principles of numerical taxonomy

(ii)                Polyembryony

(iii)               Anatomical differences between C₃ and C₄ plants

(iv)              Medicinal importance of Catharanthus roseus (= Vinca rosea)

6.       Give suitable answer on the following:

(Draw labeled diagrams wherever necessary)

(i)                  Monosporic embryo sacs

(ii)                Wood anatomy of Pinus

(iii)               Ruminate endosperm

(iv)              Gum Arabic and gum ghatti

7.       Write notes on:

(i)                  Cultivation practice of turmeric in the hilly tracts of India.

(ii)                Seasoning of wood.

(iii)               Plants producing essential cosmetic oil.

(iv)              Three spice yielding plants showing the part/s used as the spice. (give botanical names of these plants)

8.       (a) Mention the botanical name, family and the part/s of the plant used as shown below:

(i)                  Indian rubber

(ii)                Indigo

(iii)               Sandalwood oil

(iv)              Vanilla

(v)                Guava

(vi)              Finger millet

(vii)             Cinnamon

(viii)           Agar agar

(ix)              Betel

(x)                Opium

(a)    Write an account of the different types of antibiotics, their sources and modes of action.