What is the role of ovary in a flower?
Important Questions on Getting to Know Plants
'Pollen grains' are produced by:
(a) Part that produces pollen grain -
(b) Part that transfers male gametes to the female gametes -
(a) Part that is sticky to trap the pollen grain
(b) Part that develops into a fruit
The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
Out of A and B, which one is the female part of the flower?
How many meiotic and mitotic divisions are required to form 7–celled and 8–nucleated embryo sac from megaspore mother cell?
The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
Name A. What are the various parts of A?
The top part A of the flask-shaped reproductive organ X in the flower of a plant secretes a surgery substance into its lower part B which goes towards the bottom part C of the flask-shaped organ. When a tiny grain D coming from the top part E of another reproductive organ Y in the flower falls on part A, it grows a long tube F through the organ X in response to the sugary substance and reaches the bottom part C of flask shaped organ to carry out fertilisation.
Name parts (i) A (ii) B, and (iii) C of flask-shaped organ.
