Page 4 - 3.Home Assignment-II(Expt&Activity)

Male Cone

1. Male cone are borne in clusters on long branches. It consists of many micro
sporophylls which are arranged spirally around the axis.
2. Male cone is ovoid and dark brown in colour.
3. On ventral surface each microsporophyll bears two microsporangia.

Female Cone

1. Female cones arise in the axil of scale leaves on the long branches.
Each cone consists of a short axis around which a number of megasporophylls
are spirally arranged.
2. Each megasporophyll bears two ovules on its upper surface.

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6. ANGIOSPERMIC PLANT [Mustard (Brassica campestris)]
Identifying Features

1. Plant body is differentiated into root system and shoot system.
2. Root system is usually under the ground. It comprises of main root associated
with many lateral branches. The aerial part of the plant constitutes shoot
system. It consists of stem, leaves, flower, fruits and seeds.
3. Stem is soft green which is differentiated into nodes and intemodes.
4. Leaves are present at the nodes.