When pollen tube enters through micropyle, the process is called
Porogamy
Chalazogamy
Mesogarny
Apogamy
A.
Porogamy
The pollen tube may enter the ovule by following one of three routes given below:
(a) Porogamy Pollen tube enters the ovule through micropyle, e.g., most angiosperms.
(b) Mesogamy Pollen tube enters the ovule through integuments (e.g., Cucurbita) or through funiculus (e.g., Pistacia).
(c) Chalazogamy Pollen tube enters the ovule through chalazal tissues, e.g., Casuarina, Beta vulgaris, Juglens regia, etc.
Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?
Chorion
Allantois
Yolk sac
Amnion
A transgenic food crop, which may help in solving the problem of nightblindness in developing countries is
Flavr savr tomatoes
Starlink maize
Bt soyabean
Golden rice
Which of the following bio-engineered bacteria is utilized for cleaning of marine oil slicks?
Escherichia coli
Pseudomonas syringae
Pseudomonas putida
Rhizoctonia solani
