Point out the odd one
nucellus
embryo sac
mycropyle
pollen grain
Female gametophyte of angiosperms is represented by
ovule
megaspore mother cell
Double fertilization and triple was discovered by
Hofmeister
Nawaschin and Guignard
Leeuwenhoek
Strasburger
Cellular totipotency was demonstrated by
Theodore Schwann
A.V.Leeuwenhoek
EC.Steward
Robert Hooke
Which is correct
gametes are invariably haploid
spores are invariably haploid
gametes are generally haploid
both spores and gametes are invariably
Total number of meiotic division required for
100
75
125
50
A diploid female plant and a tetraploid male plant arc crossed. The ploidy of endosperm shall be
tetraploid
triploid
diploid
pentaploid
Sperm and egg nuclei fuse due to
base pairing of their DNA and RNA
formation of hydrogen bonds
mutual attraction due to differences in electrical charges
attraction of their protoplasts
Pollination occurs in
bryophytes and angiosperms
pteridophytes and angiosperms
angiospernis and gymnosperms
angiosperms and fungi
Generative cell was destroyed by laser but a normal pollen tube was still formed because
vegetative cell is not damaged.
contents of killed generative cell stimulate pollen growth
laser beam stimulates growth of pollen tube
the region of emergence of pollen tube is not
