Development of Endosperm
Trending Questions
Q.
Cotyledons shrivel, turn green and fall off in the last stages of epigeal germination. Give reason and explain the entire process.
Q.
Apomixis leads to polyembryony.
True
False
Q.
The single cotyledon present in grass embryo is called _______.
Epiblast
Coleorhiza
Coleoptile
Scutellum
Q.
Perisperm differs from endosperm in:
Being a haploid tissue
Having no reserve food
Being a diploid tissue
Its formation by fusion of secondary nucleus with several sperms
Q. In some plants, particularly halophytes, the seeds germinate with fruits while still attached to the parent plant. Identify this phenomenon from the following terms.
- Sesimonasty
- Vivipary
- Monocarpic
- Vernalization
Q. In a seed of maize, scutellum is considered as cotyledon because it
- Protects the embryo
- Contains food for the embryo
- Absorbs food materials and supplies them to the embryo
- Converts itself into a monocot leaf
Q. What is the cotyledon of maize embryo called as?
- Aleurone layer
- Scutellum
- Plumule
- Radicle
Q. The part that separates the embryo region from the endosperm region in the seed of maize is the .......................
- Scutellum
- Husk
- Hilum
- Testa
Q. Double fertilization leading to initiation of endosperm in Angiosperms requires
- Fusion of one polar nucleus and second male gamete only
- Fusion of two polar nuclei and second male gamete only
- Fusion of 4 or more polar nuclei and second male gamete only
- All the above type of fusions in different types of angiosperms
Q. Which one of the following represents an ovule, where the embryo sac becomes a horse-shoe shaped and the funiculus and micropyle are close to each other?
- Circinotropous
- Amphitropous
- Atropous
- Anatropous
Q.
function of aleurone layer
Q. Double fertilization is an exclusive feature found in flowering plants.
Mature embryosac in majority of Angiosperms is
Mature embryosac in majority of Angiosperms is
- 8 celled and 8 nucleate
- 5 celled and 7 nucleate
- 7 celled and 8 nucleate
- 3 celled and 4 nucleate
