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An octaploid male plant crossed with diploid female plant, then find the ploidy level of secondary nucleus and embryo respectively :
Find the alphabet in above diagram, which is labelling a triploid structure :
In Citrus and Mango varieties ___(A)___ cells of maternal sporophyte of ovule start dividing and develop into the embryos.
Find the "A" :
Directions For Questions
(A) Light and non-sticky pollen grain
(B) Well exposed stamens
(C) Large often – Feathery stigma
(D) Always have single ovule in each ovary
(E) Numerous flowers packed into Inflorescence.
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How many above features favour anemophily?
During formation of leaves and elongation of stem, some cells "left behind" from the shoot apical meristem, constituet :-
Match the column–I with Column–II :-
Pentamerous flower, suprior ovary with swollen axile placenta and epipetalous androecium is charecterstics of :-
Match the following column I and II :-
Match the plant with their suitable inflorescence :-
Which statements are correct ?
(a) A sperm head contains DNA and an acrosome.
(b) Mitocondria in the mid piece of a sperm produce ATP for sperm motility
(c) An acrosome is specialized lysosome that contain enzyme that enable sperm to produce ATP needed to propel themselves out of the male reproductive system
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