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 point where the funicle and the body attach
What is the hilum?
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 single layer of radially elongated cells that develops cellulose with pectin and lignin fibrous thickening around the sac which holds it together and prevents it from splitting or bursting open.
What is endothecium?
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 microsporocyte?
Inside the megasporangium, there is a diploid cell known as
What is megasporocyte?
Short stalk that that attaches an ovule to the ovary wall by a short stalk
What is funicle?
Layers in total that surround the pollen sac or pollen chambers
What is the epidermis, the inner epidermis or endothecium, the middle layer and the tapetum.
Ovule is a part of flowering plants that is located...
What is inside the gynoecium?
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?