In a particular angiosperm species, the development of the endosperm is initiated only after fertilization of the central cell. However, a mutation leads to autonomous endosperm development even without fertilization. Which of the following is the MOST likely consequence of this mutation?
Enhanced seed viability and germination rate
Formation of seeds with underdeveloped embryos or no embryos at all
Increased fruit size and seed number
Premature fruit ripening and abscission
Related Questions
Which of the following pairs of plants BOTH exhibit stamens of different lengths within their flowers?
Salvia and mustard
Indigofera and Sesbania
Allium and Aloe
Gram and turnip
A flower exhibits vexillary aestivation and has its stamens arranged in two bundles. To which of the following subfamilies does it most likely belong?
Papilionoideae
Mimosoideae
Caesalpinioideae
Asteroideae
In a flower, the filament of the stamen supports the anther. To what structure is the proximal end of the filament directly connected?
Thalamus/Receptacle
Stigma
Style
Ovary
The male reproductive part of a flower is called the:
Stamen
Pistil
Petal
Sepal
Staminode is
Sterile stamen
Fertile stamen
Redumentary stamen
Developed stamen
Identify the correct matching of aestivation type and stamen arrangement with a plant family:
(a) Vexillary aestivation, Diadelphous stamens - Fabaceae
(b) Valvate aestivation, Polyadelphous stamens - Rutaceae
(c) Imbricate aestivation, Syngenesious stamens - Asteraceae
(d) Twisted aestivation, Monadelphous stamens - Malvaceae
(a) only
(b) only
(c) only
All of the above
Diadelphous stamens are found in which family of plants?
Fabaceae
Solanaceae
Liliaceae
Compositae
Which statement is INCORRECT regarding diadelphous stamens?
They are fused in two bundles.
They are commonly found in the Fabaceae family.
They play a role in pollination.
All members of the Fabaceae family have diadelphous stamens.
The proximal end of the filament of a stamen is attached to the:
thalamus or receptacle
anther
connective
stigma
Which of the following is NOT a point of attachment for the filament of a stamen?
Stigma
Thalamus
Receptacle
Thalamus/Receptacle
