wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Placenta in Dryopteris is

A
The place of attachment of ramenta
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
The place of attachment of sporangia
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
The place from where rhizoids arise
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
The place of attachment of archegonia
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B The place of attachment of sporangia
In the life cycle of Dryopteris, the asexual sporophyte is the dominant individual. This is perennial and evergreen and differentiates into rhizome (stem), roots and leaves ( fronds). When the fronds mature these become fertile and are called as sporophylls since they contain sori. In each sorus stalked sporangia is present arising from the placenta, the swollen outgrowth on the divisions of the pinna or leaflets.
So, the correct answer is option B.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
The Leaf
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon