In this I am posting about the Question Paper of Fifth semester Botany Honours Under Dibrugarh University CBCS 2022 Question Paper .And this question paper was sending by me Mr Bitupon Gogoi,Now he is studying Msc Botany.So I regerd this question paper and make for your upcoming examoination.Please If you like this post ,you can be comment in this post.And this post to be available in PDF mode .
Botany C-11
Reproductive Biology angiosperm
1.(a)Choose the correct answer from the following ;
(i) The edible part of litchi is pericarp /endosperm/aril.
(ii)The wall layer of microsporangium which provides nourishment to developing microspopores is called anther wall/tapetum/exine,
(iii)The developement of endosperm of arecanut is cellular /nuclear/helobial type.
(b)Fill in the blanks :
(i)The entry of the pollen grain into the ovule through the chalaza is called ........../
(ii)When the micropyle ,chalaza and funicle of an ovule lie on one straight line ,it is called ......../
2.Write precies notes on the following (any three )
(a)Bisporic embryo sac
(b)Induction polyembryoony
(c)Helobial endosperm
(d)Significance of pollinattion.
(e)Induction of flowering.
3.What do you mean by douuble fertilization ?Write in detail about the process of double fertilizatiuon .Give diagram where necessary.
or
Write explanatory notes on the following.
(a)Haustorial structures of endosperm.
(b)Palynology and its significance
4.What do you mean byt embryo-endospermrelationships?With illustration ,write briefly on unusual developement of embryo in Paeonia.
or
WQrite notes on the following :
(a)Obturator
(b)Aril
(c)Caruncle
5.Write -explanatory notes on the following :
(a)Megagametogenesis
(b)Method to overcome self-incompabability .
or
What is parthenocarpy?Write briely on the causes and their application.
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