Question

discrive successive stages of development of arche gonium In anthococeros with suitable diagram​

Answer 1

Answer:

Vegetative reproduction often rakes place by the decay of the older basal parts of the thallus and by continuous growth from the growing point. The tip grows continuously giving rise to separate plants. This method is’ less common in Anthoceros than in other Hepatics.

(b) By Tubers:

Under unfavourable environmental condi­tions like prolonged drought, many species of Anthoceros (e.g. A. laevis, A. tuberosus, A. pear- soni, A hallii) produce tubers on the marginal patches of the thallus tissue (Fig. 6.29 E).

Tubers escape from desiccation with the formation of a resistant layer of cork cells. Tubers store food and function as perennating organ that germinate into new gametophytes on the return of favourable environmental conditions.