Testa of a seed is formed from
both outer and inner integuments
inner integument
outer integument
outer integument and funicle
Related Questions
Identify the characters with reference to the plant in which eight nucleated embryo sac was first studied by strasburger.
I – Micropyle, chalaza and funiculus are arranged in the same vertical line
In the ovule.
II – presence of both unisexual and bisexual flowers in the same plant.
III – Filiform apparatus helps in conduction of food materials from
Endosperm to egg apparatus.
IV – Long funiculus coils like a watch spring around the ovule.
I and IV
II and III
I and II
III and IV
A plant has 24 chromosomes in microspore mother cell the number of chromosomes in its endosperm will be.
36
24
12
48
Number of seeds is equals to the
Number of ovules
Number of ovaries
Both (a) and (b)
None of these
Ruminate endosperm is found in the seeds of family
Compositae
Cruciferae
Euphorbiaceae
Annonaceae
Micropyle exists in
Seed
Ovule
Both (1) and (2)
Fruit only
Fusion of male gamete with polar nuclei in embryo sac is known as.
double fertilization
embryogeny
pollination
triple fusion
What is the fate of the male gametes discharged in the synergid?
One fuses with egg other(s) degenerate(s) in the synergid.
All fuse with the egg.
One fuses with the egg, other(s) fuse(s) with synergid nucleus.
One fuses with the egg and other fuses with central cell nuclei.
Mature seeds of angiosperms may or may not shows?
dormancy
seed coat
endosperm
all of these
During embryogenesis zygote undergoes
Cell division
Cell differentiation
Meiosis only
Both 1 and 2
Choose incorrect option w.r.t. zygote formed as a product of syngamy
Vital link that ensures continuity of species between individuals of two successive generations
Its development depends upon the environment to which it is exposed
Every organism reproducing sexually or asexually begins life as a single celled structure called zygote
Zygote may undergo a period of rest before its development
