Double fertilization, endosperm and embryo development
- In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are : Answer: 4. Synergids, Zygote and Primary endosperm nucleus Key idea: In a fertilised embryo sac, count ploidy for each structure. Synergids:... 1
- What is the fate of the male gametes discharged in the synergid ? Answer: 4. One fuses with the egg and other fuses with central cell nuclei. Key idea: Double fertilisation: both male gametes released into... 1
- Double fertilization is Answer: 4. Syngamy and triple fusion Double fertilisation is syngamy (one male gamete with the egg) plus triple fusion (the other male gamet... 1
- Double fertilization is exhibited by : Answer: 3. Angiosperms Key idea: In double fertilisation, one male gamete fuses with the egg (syngamy) and the other with the two polar nucl... 1
- Which one of the following generates new genetic combinations leading to variation? Answer: 2. Sexual reproduction Sexual reproduction involves meiosis (crossing over, independent assortment) and fusion of gametes from two p... 1
- The coconut water from tender coconut represents : Answer: 4. Free nuclear endosperm Key idea: Coconut water is a liquid free nuclear endosperm. In coconut, the triploid primary endosperm nuc... 1