Question

Draw labelled diagrams of
a. Female and male thallus of a liverwort
b. Gametophyte and sporophyte of Funaria
c. Alternation of generation in Angiosperm

Answer 1

a. Diagram of the thallus of a liverwort:



Description:

• Thallus: The flattened simple body
• Gemma: Asexual buds located in thallus
• Antheridiophore: Present on the male thallus bearing antheridia
• Archegoniophore: Present on the female thallus bearing archegonia

b. Diagram of complete sporophyte on gametophyte of Funaria:


Description:

• Rhizoids: Provide anchorage
• Main axis: Central axis bearing leaves and other structures
• Leaves: Photosynthetic structures around main axis
• Setae: Middle elongated structure of the sporophyte
• Capsule: Contains spores

c. Diagram of alternation of generation in Angiosperm


Description:

The angiosperms go through a Haplo-diplontic life cycle.

• Gametophytic phase: Haploid

○ Male: Pollen grains
○ Female: Embryo sac

• Sporophytic phase: Diploid

○ Plant parts like:
■ Roots
■ Stems
■ Leaves
■ Floral parts like anther, filament,
stigma, style, ovary