Pollination and Fertilisation in Plants
Pollination mechanisms and fertilization processes in plants
Questions
The pollination in plants in which anthers release pollen internally happens through
- honeybees
- bumblebees
- moths
- flies
What special adaptation is seen in flowers pollinated by moths?
- They have large red or orange petals and are scentless.
- They have white petals and a strong scent.
- They have large coloured petals and a strong scent.
- They are small and inconspicuously green in colour.
What is pollination by wind called?
- Entomophily
- Anemophily
- Hydrophily
- Zoophily
Which animals are involved in psychophily?
- Orchid bees
- Moths
- Butterflies
- Wasps
Which animals pollinate large and showy, pink or lavender-coloured, frequently having a landing area and usually scented flowers?
- Bats
- Hummingbirds
- Butterflies
- Beetles
What is the self-pollination that occurs before a flower opens called?
- Homogamy
- Cleistogamy
- Geitonogamy
- Allogamy
In which kind of fertilisation does the entry of pollen tube into ovule occur through micropyle?
- Siphonogamy
- Mesogamy
- Porogamy
- Homogamy
Which of the following pairs is incorrect?
- Cantharophily - Beetle
- Chiropterophily - Bats
- Ornithophily - Birds
- Sapromyophily - Moths
The type of fecundation observed in casuarina sps is
- porogamy
- chalazogamy
- mesogamy
- siphonogamy
Which event leads to endospore formation?
- Fusion of egg cell with sperm
- Fusion of synergids with sperm
- Fusion of polar nuclei with sperm
- Fusion of antipodal cells with sperm
The germ tube is made up of
- exine
- intine
- style
- funicle
Which of the following is correct about cross-pollination?
- There are less chances of failure of pollination.
- A small number of pollen grains are required for pollination.
- A large number of seeds are formed by this method.
- The purity of race is maintained.
Which structures fuse with sperms in double fertilisation?
- Egg cells
- Polar nuclei
- Egg cells and polar nuclei
- Antipodal cells
What is ploidy of endosperm tissue?
- Haploid
- Diploid
- Triploid
- Polyploid
The cell which acts as a feeding organ of the embryo during its development is called
- apical cell
- suspensor cell
- hypophysis cell
- embryonal cell