The morphological nature of the edible part of coconut is
(1) perisperm
(2) cotyledon
(3) endosperm
(4) pericarp
Pollination in water hyacinth and water lily is brought about by the agency of
(1) water
(2) insects or wind
(3) birds
(4) bats
Which one of the following statements is not true?
1. | Exine of pollen grains is made up of sporopollenin |
2. | Pollen grains of many species cause severe allergies |
3. | Stored pollen in liquid nitrogen can be used in the crop breeding programmes |
4. | Tapetum helps in the dehiscence of anther |
The coconut water from tender coconut represents
(1) fleshy mesocarp
(2) free-nuclear proembryo
(3) free-nuclear endosperm
(4) endocarp
Which of the following statements is not correct?
(1) Insects that consume pollen or nectar without bringing about pollination are called pollen nectar robbers
(2) Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil
(3) Some reptiles have also been reported as pollinators in some plant species
(4) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style
Seed formation without fertilisation in flowering plants involves the process of
(1) budding
(2) somatic hybridization
(3) apomixis
(4) sporulation
Filiform apparatus is characteristic feature of
1. generative cell
2. nucellar embryo
3. aleurone cell
4. synergids
Which of the following are the important floral rewards to the animal pollinators?
(1) Colour and large size of flower
(2) Nectar and pollen grains
(3) Floral fragrance and calcium crystals
(4) Protein pellicle and stigmatic exudates
Placenta and pericarp are both edible portions in
(1) apple
(2) banana
(3) tomato
(4) potato
Geitonogamy involves
(1) Pollination of a flower by the pollen from another flower of the same plant
(2) Pollination of a flower by the pollen from the same flower
(3) Pollination of a flower by the pollen from a flower of another plant in the same population
(4) Pollination of a flower by the pollen from a flower of another plant belonging to a distant population