Write a note on Liliaceae family.
$\rightarrow$ It is commonly called the 'Lily family".
$\rightarrow$Habitat : It is distributed world wide.
$\rightarrow$ Vegetative characters: Perennial herbs with underground bulbs/corms/rhizomes.
$\rightarrow$ Leaves : mostly basal, alternate, linear, exstipulate with parallel venation.
$\rightarrow$ Floral characters :
$\rightarrow$ Inflorescence : Solitary / cymose; often umbellate clusters.
$\rightarrow$ Flower : Bisexual; actinomorphic.
$\rightarrow$ Perianth : tepal six (3+3), often united into tube; valvate aestivation.
$\rightarrow$ Androcium : Stamen six, (3+3).
$\rightarrow$ Gynoecium : Tricarpellary, syncarpous, ovary superior, trilocular with many ovules; axile placentation.
$\rightarrow$ Fruit : Capsule, rarely berry.
$\rightarrow$ Seed: Endospermous.
$\rightarrow$ Floral Formula $: \mathrm{Br}, \oplus, \varnothing, \overrightarrow{\mathrm{P}_{3+3}} \mathrm{~A}_{3+3} \mathrm{G}_{[3)}$
Seeds of Orchis are
Match the following
List $-I$ | List $-II$ | ||
$A$ | Coleorhiza | $I$ | Development of sporophyte directly from gametophyte without intervention of gametes |
$B$ | Apogamy | $II$ | Development of gametophyte directly from sporophyte without the involvement of reduction division. |
$C$ | Indusium | $III$ | An unbranched columnar stem with a crown of leaves |
$D$ | Caudex | $IV$ | Protective covering of radicle |
$V$ | Protective structure of a sorus |
Epiphyllous roots in Begonia and Bryophyllum are
The whorl of bracts present below the inflorescence of Helianthus $(sunflower)$ is
The arrangement and folding of each lamina without any relationship with other leaves in bud, is called