A flower exhibiting cleistogamy, but with viable pollen grains, fails to produce seeds. Which of the following is the LEAST likely explanation for this observation?
Lack of pollinating agents
Failure of pollen tube growth
Non-functional stigma
Problems with fertilization
Related Questions
A typical angiosperm embryo sac at maturity, is
4 – nucleate, 2 – celled
8 – nucleate, 7 – celled
4 – nucleate, 4 – celled
8– nucleate,4 – celled
8-nucleated embryo sac are
Monosporic
Bisporic
Tetrasporic
Any of these
In angiosperm functional megaspore develops into
Embryo sac
Ovule
Endosperm
Pollan sac
In the fully organized Polygonum type of embryo sac, what is the ratio of haploid, diploid and triploid nuclei?
Which one of the following statements is not true?
Pollen grains are released from anthers at 2-celled stage
Sporogenous cell directly behaves as the megaspore mother cell
Megaspore divides twice to form an eight nucleate embryo sac
Egg and synergids always lie near the micropylar end of ovule
In an angiosperm ovule, which structure is responsible for transporting nutrients from the placenta to the developing embryo sac?
Funicle
Integument
Micropyle
Chalaza
Polygonum type of embryosac is?
Bisporic, 8 nucleate
Monosporic, 4 nucleate
Tetrasporic, 16 nucleate
Monosporic, 8 nucleate
For the formation of tetrasporic embryo sac, how many megaspore mother cells are required?
One
Two
Three
Four
For the formation of tetrasporic embryo sac, how many megaspore mother cells are required?
1
2
3
4
In a flowering plants, megaspore develops into an embryo sac, which contains
4 cells, one of which is an egg
6 cells, one of which is an egg
8 cells, one of which is an egg
None of the above
