Which one of the following may require pollinators, but is genetically similar to autogamy?
Geitonogamy
Xenogamy
Apogamy
Apogamy
Which one of the following statements is not true?
Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups
Pollen grains of some plants cause severe allergies and bronchial afflictions in some people
The flowers pollinated by flies and bats secrete foul odour to attract them
The flowers pollinated by flies and bats secrete foul odour to attract them
Which one of the following statements is not true?
Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups
Pollen grains of some plants cause severe allergies and bronchial afflictions in some people
The flowers pollinated by flies and bats secrete foul odour to attract them (c) Honey is made by bees by digesting
The flowers pollinated by flies and bats secrete foul odour to attract them (c) Honey is made by bees by digesting
Which of the following are the important floral rewards to the animal pollinators?
Colour and large size flower
Nectar and pollen grains
Floral fragrance and calcium crystals
Floral fragrance and calcium crystals
larger but to have smaller sex organs
larger and to haver larger sex organs
smaller and to have smaller sex organs
smaller and to have smaller sex organs
Which one of the following statements is correct?
Seeds of orchids have oil-rich endosperm
Placentation in primrose is basal
Flower of tulip is a modified shoot
Flower of tulip is a modified shoot
The gametophyte is not an independent, free-living generation in
Adiantum
Marchantia
Pinus
Pinus
Nucellar polyembryony is reported in species of
Gossypium
Triticum
Brassica
Brassica
D.
Brassica
The occurrence of more than one embryo in a seed is referred as polyembryony. In many Citrus and mango varieties, some of the nucellar cells surrounding the embryo sac and develop into the embryos in such species each ovule contain many embryos (nucellar polyembryony).