Which one of the following may require pollinators, but is genetically similar to autogamy?
Geitonogamy
Xenogamy
Apogamy
Apogamy
A.
Geitonogamy
Geitonogamy is functionally cross pollination but genetically it is autogamy because in geitonogamy the pollens come from the same plant. Pollens are being transferred to the stigma of one flower to another flower of /on the same plant, which is genetically same. Therefore, geitonogamy is a cross pollination phenomenon but is equivalent to autogamy genetically.
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
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 wrong?
When pollen is shed at two-celled stage, double fertilization does not take place
Vegetative cell is larger than generative cell
Pollen grains in some plants remain viable for months
Pollen grains in some plants remain viable for months
What is the function of germ pore?
Emergence of radicale
Absorption of water for seed germination
Initiation of pollen tube
Initiation of pollen tube
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 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
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
The coconut water and the edible part of coconut are equivalent to
endosperm
endocarp
mesocarp
mesocarp
