Selaginella and Salvinia are considered to re | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) : In the majority of pteridophytes,all spores are of similar kinds; such plants are called homosporous.Genera like $Selaginella$ and $Salvinia$,wh

Vedclass · Accepted Answer

embryo develops in female gametophyte which is retained on parent sporophyte.

Vedclass · Answer

(D) : In the majority of pteridophytes,all spores are of similar kinds; such plants are called homosporous.Genera like $Selaginella$ and $Salvinia$,which produce two kinds of spores,macro (large) and micro (small) spores,are known as heterosporous.The megaspores and microspores germinate and give rise to female and male gametophytes,respectively.The female gametophytes in these plants are retained on the parent sporophytes for variable periods.The development of the zygotes into young embryos takes place within the female gametophytes.This event is a precursor to the seed habit,which is considered an important step in evolution.

$Selaginella$ and $Salvinia$ are considered to represent a significant step toward the evolution of seed habit because

Similar Questions

The site of spore formation in $Dryopteris$ is

Selaginella has a character of evolutionary importance. That character is

Sporangia of eusporangiate ferns:

Plants with small leaves (microphylls) are included in which of the following classes?

Which of the following are homosporous?

Vedclass Test Series

Exam Paper Generator

Online Exam Module