What is pollen-pistil interaction, and what does it achieve?
Sexual Reproduction in Flowering Plants
Original Khojo Papers practice question — not from a past board paper.
Emasculation is the removal of the anthers from a bud before they dehisce, so that the flower cannot pollinate itself. It is necessary in an artificial cross when the female parent bears a bisexual flower, and the emasculated bud is then bagged until it is pollinated by hand with the chosen pollen.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
A unisexual female flower needs only bagging, not emasculation.
From the same topic and chapter, at a similar level.
What is pollen-pistil interaction, and what does it achieve?
Sexual Reproduction in Flowering Plants
Define apomixis and parthenocarpy, and state the practical use of each.
Sexual Reproduction in Flowering Plants
What is double fertilisation, and what does each fusion produce?
Sexual Reproduction in Flowering Plants
Describe the structure of a mature embryo sac and name the cells it contains.
Sexual Reproduction in Flowering Plants
Describe the structure and functions of the placenta.
Human Reproduction
Name the hormones that control the menstrual cycle and state the function of each.
Human Reproduction