Which of the following statements regarding pollination in hydrophytes are correct?
(i) Vallisneria has colorful, nectar-producing flowers.
(ii) Water lily flowers are not water-pollinated.
(iii) Pollen grains in most water-pollinated species are protected from wetting.
(iv) Some hydrophytes have long, ribbon-like pollen grains.
(v) In some hydrophytes, pollen grains are passively carried by water.
(i), (ii) and (iii)
(ii), (iii) and (iv)
(iii), (iv) and (v)
(i), (iv) and (v)
Related Questions
Cells of innermost layer of anther
Have a-cellulosic fibrous band
Do not degenerate
Nourish the developing pollen grains
Help in dehiscence of anther
Cleistogamous flowers
Never open
Always open
Sometimes they open
Remain still
The ploidy level of egg apparatus of embryo sac which contains three cells is
Triploid
Haploid
Diploid
Tetraploid
In a flowering plant, the pollen tube first arrives in?
egg
antipodal cell
synergid
central cell
If the Yucca moth population were to drastically decline, what would be the most likely impact on the Yucca plant population?
Increase in Yucca plant population
No impact on Yucca plant population
Decline in Yucca plant population
Increased genetic diversity in Yucca plants
After meiosis, one of the four megaspores survives and is called the functional megaspore. This functional megaspore develops into which of the following?
Ovule
Integuments
Nucellus
Embryo sac
Chalazal pole is present
Opposite to micropyle
At the origin of integuments
Opposite to nucellus
Near the embryo sac
Pollen tube enters through
Filiform apparatus
Synergid cells
Antipodal cells
Chalazal cells
Filiform apparatus is a characteristic feature of
Egg
Synergid
Zygote
Suspensor
Microsporangium produces
Megaspores
Microspores
Zygotes
Endosperm
