ධතිලක්
Identify the leoth shown in alphabetical orda A, B and C in the figure given
below based on its appearance and indicate its type
රටට
2 I am used for making an indian lium im Who am I?
3 Iam ued te nuking sweaters and lobtained from anal Who am I?
Distinguishes matter and organisms on the basis of their properties, composition
and quesliests
Answers
The female gametangiophore is called an archegoniophore; it grows up from the thallus and consists of a stalk and an archegonial head with pendant (hanging) lobes or fingers. The gametophyte plant body is called a thallus, which means that it lacks xylem and phloem and therefore does not have true stem, true leaf or true root. The gemma cups are cup-like structures containing gemmae. The gemmae are small discs of haploid tissue, and they directly give rise to new gametophytes. They are dispersed from gemma cups by rainfall. Rhizoids are simple hair-like protuberances that extend from the lower epidermal cells of bryophytes, Rhodophyta and pteridophytes. They are similar in structure and function to the root hairs of vascular land plants. Rhizoids absorb water by capillary action, in which water moves up between threads of rhizoids.