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If there are 4 cells in anther, what will be the number of pollengrains –
The role of double fertilization in angiosperms is to produce.
The role of double fertilization in angiosperms is to produce endosperm
Perisperm is remaining part of –
In angiosperms, a mature male gametophyte is derived from a pollen mother cell by –
The embryo sac in a angiospermis a –
Which of the following is a important characteristic of angiosperms?
Coralloid roots of Cycas are useful in
Anabaena,Nostoc and bacteria are found in coralloid roots hence it helps in fixation of nitrogen.
In Pinus male and female reproductive structures occur
Which of the following structures in Pinus are haploid?
Because endosperm is haploid (n) and formed before fertilization and megaspore mother cell divides reductionally to form a linear tetrad of haploid reductionally to form a linear tetrad of haploid megasporesand microspore (= pollen grain) is the first stage of the gametophyte (n).
Pollination of pollen grains in Pinus takes place at
Pollination in Pinus takes place when two prothallial cell,one generative cell and one tube cell are formed