Home
Class 11
BIOLOGY
A prothallus is...

A 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 fertilisation in pteridophytes.

Text Solution

Verified by Experts

The correct Answer is:
C

Prothallus is a small flattened multicellular structure that represent the independent gametophyte generation in pteriodophytes, e,g., club mosses, horsetails and ferns. In some of the pteridophytes a single prothallus bears both male and female sex organs. In others, there are separate male and fenale prothalli.
Promotional Banner

Similar Questions

Explore conceptually related problems

Fern prothallus is developed form

In the prothallus of a vascular cryptogam, the antherozoids and egg mature at different times. As a result,

In pteridophytes, prothallus produces

Mention the ploidy of the following: protonemal cell of a moss, primary endosperm nucleus in dicot, leaf cell of a moss, prothallus cell of a fern, gemma cell in Marchantia, meristem cell of monocot, ovum of a liverwort, and zygote of a fern.

Prothallus (gametophyte) gives rise to fern plant (sporophyte) without fertilisation. It is

Which of the following sequences are correct a) In Bryophytes – Gametophytes - Sex organ – Gamete fusion – Zygote - Spore mother cell – spore – Thallus. b ) In Angiosperm – pollination – fertilization – zygote – new plant. c) In Gymnosperm – male cone, and female cone – microspore and megaspore – Zygote – new sporophytes plant. d) In pteridophytes – pollination by wind, fertilization in the presence of water – zygote prothallus, new plant.