In gymnosperms, the pollen chamber represents
a cell in the pollen grain in which the sperms are formed.
a cavity in the ovule in which pollen grains are stored after pollination
an opening in the megagametophyte through which the pollen tube approaches the egg
an opening in the megagametophyte through which the pollen tube approaches the egg
B.
a cavity in the ovule in which pollen grains are stored after pollination
In gymnosperms, the pollen chamber is a cavity in the ovule in which pollen grains are stored after pollination.
Which one of the following is a viral disease of poultry?
Salmonellosis
Coryza
New castle disease
New castle disease
In maize, hybrid vigour is exploited by
bombarding the seeds with DNA
crossing of two inbred parental lines
harvesting seeds from the most productive plants
harvesting seeds from the most productive plants
Main objective of production/use of herbicide resistant GM crops is to
eliminate weeds from the field without the use of manual labour
eliminate weeds from the field without the use of herbicides
encourage eco- friendly herbicides
encourage eco- friendly herbicides
Which one of the following pairs is mismatched?
Pila globosa - pearl
Apis indica - honey
kenia lacca - lac
kenia lacca - lac
