Which of the following statements is not correct ?
Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil.
Some reptiles have also been reported as pollinators in some plant species.
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.
Insects that consume pollen or nectar without bringing about pollination are called pollen/ nectar robbers.
Match the following:
Column $- I$ | Column $- II$ |
$(1)$ Germ pore | $(a)$ Lack of sporopollenin |
$(2)$ Parthenium | $(b)$ Malva |
$(3)$ Self incompatibility | $(c)$ Palms |
$(d)$ Contaminant with important wheat |
Product of sexual reproduction generally generates
Differentiate between:
$(a)$ Integument and testa;
$(b)$ Perisperm and pericarp.
Give differences : Stamen and Pistil
Explain Post Fertilization events. Discribe the step of Post Fertilization.