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SECTION A |
EXPERIMENT 1
mS
To study and describe flowering plants of families Solanaceae,
+Fabaceae-and-titiaceae a
TMEORY/PRINCIPLE
The identification of plants is based primarily on morphological features, particularly th
floral charactere The hranch of science that deals with identification, nomenclature and: Habit Annual herb.
Root Usually branched tap root system
Stem Herbaceous, erect, cylindrical branched, green and smooth,
Leaves Alternate in basal part, opposite, simple, petiolate or sessile, ovate, acute and reticulate
venation
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heer sales
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sve (o Peal dagran
Ovary wall
Owes
. (TS. of ovary
scription of Solanum nigrum (family-Solanaceae) ‘Syngenesious androecium
lo
Table Showing the symbols used ina floral formula
REQUIREMENTS
naceae, Fabaceae anduliaeeae, Each plant should
HF ocatly available plant specimens of families Sola
smh few internodes, leaves, flowers and fruits, Glass slides, water, beaker,
have at least a small branc!
petridish, razor, blade, needle, brush, hand lens and a dissecting microscope:
PROCEDURE
Solanaceae, Fabaceae and Liliaceae,
1, Take a plant, which is locally available of families
Keep the plant in a beaker containing water.
oe Study the habit of plant its root system, stern anct leaf morphology, inflorescence and flowers
4. Describe the floral features and vegetative parts of the plant
5 Observe the flower bud under diésection microscope ot a hand ens and note down the aestivation
pattems of calyx and corolla, number of sepals and petals and number of stamens.
6. CuLLS. of the flower, place it on a side and observe under the dissecting microscope 10 study
postion of stamens, numiber of carpels and position of ovary (epigynous, Perigynous oF hypogynous)
> 7, Mount a stamen on a slide and study the attachment of filament to anther (basifixed, dorsifixed,
versatile and adnate), dehiscence pattern of anther (porous and longitudinal) and number of
anther lobes
8, Mount the pistil and study the ovary, style and stigma
9, With the help of a sharp blade, cut a T.S. of the ovary and observe the type of placentation and
number of locules.
40. Draw the well labelled diagram of plant and its parts and write down the floral formula and
comments in your notebook.
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LFAMILY~ SOLANACEAE,
‘ lu axe lage er ony eae as the potato family. It is widely distributed in tropics
e zone. Solanum nigrum (makoi), Petunia alba, Solanum tube’
0 ; } yosum
(Potato), Solanum melongena (brinja), etc, are some plants belonging to this family
Classification (Solanum nigrum) —
| BIOLUGY Class 11th
ahd,
Class - _Dicotyledonae
Family - Solanaceae
Species nigrum >
PRECAUTIONS
Plant should be taken carefully so that root, stem, leaves and fruits should not be damaged.
The flower should be dissected carefully and each whorl should be placed separately for proper
study of each part
The study of flower should be done immediately after dissection t because it may get dried
