WebA Prothallus is a. A structure in pteridophytes formed before the thallus develops b. A sporophytic free-living structure formed in pteridophytes c. A gametophyte free-living structure formed in pteridophytes d. A primitive structure formed after fertilization in pteridophytes Solution: Option (c) is the answer. 6. WebGive a brief account of prothallus. Ans. In pteridophytes, the spores germinate to give rise thallus like gametophyte is called prothallus. Prothallus is small, multicellular free living, mostly, photosynthetic. Botany-I 13. They require cool, damp, shady places to grow. Because of this specific requirement ...
Give an account of - Idioms by The Free Dictionary
WebProthallus: The prothallus is the gametophyte phase in the life cycle of ferns and other pteridophytes. Characteristics of prothallus: Prothallus refers to gametophytes of bog … A prothallus, or prothallium, (from Latin pro = forwards and Greek θαλλος (thallos) = twig) is usually the gametophyte stage in the life of a fern or other pteridophyte. Occasionally the term is also used to describe the young gametophyte of a liverwort or peat moss as well. In lichens it refers to the region of the thallus that is free of algae. connecticut supreme court attorney search
Lycopodium: Habit and Habitat and Morphology - Biology …
WebJul 20, 1998 · prothallium, the small, green, heart-shaped structure (gametophyte) of a fern that produces both male and female sex cells (gametes). The prothallium forms from a … WebFeb 5, 2024 · Give brief account of each of them? (20) Ans: Meaning of Assessee: Assessee means a person by whom any tax or any other sum of money payable under the Act and include: i) Every person in respect of whom any proceeding has been initiated under the act for the assessment of his income or the income of any other person. These … WebDec 16, 2024 · Answer: The prothallus develops from a germinating spore. It is a short-lived and inconspicuous heart-shaped structure typically 2–5 millimeters wide, with a number of rhizoids (root-like hairs) growing underneath, and the sex organs: archegonium (female) and antheridium (male). Appearance varies quite a lot between species. Advertisement edible wild berries of pacific northwest