Which one of the following is linked to the discovery of bordeaux mixture as a popular fungicide?
Bacterial leaf blight of rice
Downy mildew of grapes
Loose smut of wheat
Black rust of wheat
B.
Downy mildew of grapes
A fern differs from a moss in having
Swimming archegonia
Swimming antherozoids
Independent gametophytes
Independent sporophytes
Which of the following floral parts forms pericarp after fertilization?
Nucellus
Outer integument
Ovary wall
Inner integument
Development of an embryo without fertilization is called as
Apomixis
Polyembryony
Parthenocarpy
Parthenogenesis
Unisexuality of flowers prevents
Autogamy, but not geitonogamy
Both geitonogamy and xenogamy
Geitonogamy, but not xenogam
Autogamy and geitonogamy