With respect to angiosperms, identify the incorrect pair from the following
antipodal - 2n
Vegetative all of male gametophyte - n
Primary endosperm nucleus-3n
Cell of nucellus of ovule -2n
A.
antipodal - 2n
Out of the given pairs in the option, the only antipodal is wrongly matched because antipodals are haploid cells (n) found within the mature embryo sac towards the chalazal end. Rest all three options are correctly matched.
Pollen grains can be stored for several years in liquid nitrogen having a temperature of
–120°C
–80°C
–160°C
–196°C
Which of the following has proved helpful in preserving pollen as fossils?
Pollenkitt
Cellulosic intine
Sporopollenin
Oil content
Which of the following floral parts forms pericarp after fertilization?
Nucellus
Outer integument
Ovary wall
Inner integument
When pollen tube enters through micropyle, the process is called
Porogamy
Chalazogamy
Mesogarny
Apogamy
Which one of the following statements is correct?
Hard outer of pollen is called intine
Sporogenous tissue is haploid
ENdothelium produces the microspores
Tapetum nourishes the developing pollen
