CameraIcon

SearchIcon

MyQuestionIcon

52

You visited us 52 times! Enjoying our articles? Unlock Full Access!

Structure of Microsporangium

Endothecium i...

Question

Endothecium is responsible for ______________ of pollen grains.
i) nutrition
ii) protection
iii) dehiscence

A

i

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

i & ii

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

ii & iii

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

ii

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C ii & iii
Endothecium is a layer in the wall of a sac-like structure present in anther called microsporangium. It is responsible for both the protection and dehiscence of pollen grains from the anther.
Another layer of microsporangia called tapetum is responsible for the nourishment of pollen grains.

Suggest Corrections

thumbs-up

1

Similar questions

Q. Endothecium is responsible for ______________ of pollen grains.
i) nutrition
ii) protection
iii) dehiscence

Match the following.

Column - I Column - II
(i). Epidermis (a). Nutritive layer
(ii). Endothecium (b). Dehiscence of anther
(iii). Tapetum (c). Protective layer
(iv). Middle layers (d). Short-lived layer

Match the following.

\begin{matrix} C o l u m n - I & C o l u m n - I I (i) . E p i d e r m i s & (a) . N u t r i t i v e l a y e r (i i) . E n d o t h e c i u m & (b) . D e h i s c e n c e o f a n t h e r (i i i) . T a p e t u m & (c) . P r o t e c t i v e l a y e r (i v) . M i d d l e l a y e r s & (d) . S h o r t - l i v e d l a y e r \end{matrix}

Q. Based on the given excerpt, answer the given question.

Stamen is regarded as a microsporophyll that possesses microsporangia which have microspore mother cells that give rise to microspores. The cells of sporogenous tissues undergo meiotic division to form microspore tetrad. Microspore is present in the bilobed structure called anther. A male gametophyte is a gamete producing haploid phase in a plant. In angiosperms, it is the pollen grains that are regarded as gametophytes.

Endothecium is responsible for ______________ of pollen grains.

i) nutrition
ii) protection
iii) dehiscence
[1 mark]

Match the following.

\begin{matrix} C o l u m n - I & C o l u m n - I I (i) . E p i d e r m i s & (a) . N u t r i t i v e l a y e r (i i) . E n d o t h e c i u m & (b) . D e h i s c e n c e o f a n t h e r (i i i) . T a p e t u m & (c) . P r o t e c t i v e l a y e r (i v) . M i d d l e l a y e r s & (d) . S h o r t - l i v e d l a y e r \end{matrix}

View More

Join BYJU'S Learning Program

explore_more_icon

Explore more

Structure of Microsporangium

Standard XIII Biology

Join BYJU'S Learning Program

CrossIcon