Flower structures
Part of the flower usually conspicuously coloured
What is petal?
The fertile part of the stamen that usually has two lobes or thecas connected by a connective.
What is anther?
The little opening at the end of integument
What is the microphyle?
How are four pollen grains formed?
What is the four pollen sacs which contain pollen mother cells undergo meiosis?
The diploid cell inside ovule will undergo meiosis to produce 4 megaspores. how many will survive?
What is one?
This contains pollen sacs in which pollen is made
What is anther?
Chamber filled with pollen or pollen grains
Microspore
The main body of the ovule has a cover of 1 or 2 envelopes that we call
What is integuments?
Pollen grains seen in groups of fours
What is tetrads?
Why is an embryo sac is also known as female gametophyte?
What is it has 8 haploid cells?
The top of the flower stalk from which the flowers arise.
What is receptacle?
The outermost layer and is a single layer that is of thickened fibrous matter whose function is to protect the pollen sacs.
What is the epeidermis?
Contains nutritive tissue and the embryo sac, and in some flowering plants, it is still present after fertilisation as a source of nutrition for the embryo.
What is nucellus?
What does the pollen grain nucleus divide by to form at generated nucleus and the pollen tube nucleus?
What is by mitosis?
Name the structure that allows production of embryo sac of a flower.
What is the ovule?
Contains a vascular bundle that carries food and water to the anther.
What is filament?
A male flower part is also known as
What is stamen?
Once the ovule has undergone fertilisation what transforms into the seed coat?
What is the integuments?
Inside the microsporangium, there is a diploid cell known as
What is microspore mother cell?
Inside the megasporangium, there is a diploid cell known as
What is megaspore mother cell?
Short stalk that that attaches an ovule to the ovary wall by a short stalk
What is funicle?
what is the product produce from male flower part
What is pollen grain?
the area of attachment of funicle to ovary
What is placenta?
Name the structure that allows production of pollen grain of a flower.
What is anther?
Why does only one megaspore survive?
What is to avoid competition for nutrition?