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Which of the following statement is correct ?
How many pollen grains will be formed after meiotic division in ten microspore mother cells?
Each microspore mother cell gives rise to 4 microspores which develop into pollen grains.
Flowers showing ornithophily show few characteristic like
Transfer of pollen grains by birds is known as ornithophily. They usually have bright coloured flowers,tubular or cup shaped and having a large quantity of nectar.
Anemophily type of pollination is found in
Vallisneria exhibits hydrophily and Salvia is pollinated by honey bee. In bottle brush pollination is carried out by birds.
Which type of association is found in between entomophilous flower and pollinating agent ?
Commensalism is interaction between two individuals in which one is benefitted while the other is unaffected. Inmutualism both individuals are beneficial for each other.The pollinating insect gets nectar from flower and in turn helps in pollination of flowers.
Which is the most logical sequence with reference to the life cycle of angiosperm?
Tapetum is
Pollination occurs in
Pollen grains are found only in Gymnosperms and Angiosperms.
Which of the following pair has haploid structures?
Female gametophyte of angiosperms is represented by
Embryo sac is 7-celled structure. There is a large central cell with two polar nuclei, egg apparatus with egg cell and 2 synergids present at micropylar end and its chalazal end, 3 antipodal cells are present.