prophase I : homologous chromosomes are paired
metaphase I : the centrosome replicates
anaphase I: homologous chromosomes are separated
telophase I : nuclear envelopes form around separated chromosomes
The path electrons take to orbit the nucleus is called shell.
Explanation:
A. Creativity
Creativity is a characteristic or trait in scientists or other answer seekers that allows them to think out of the box. It allows them to look through different perspectives to find new or other solutions to a problem.
Answer:
Double fertilization produces a diploid sporophyte and a triploid endosperm. (Ans. C)
Explanation:
Angiosperm are plants which is known for flowering plant on the earth. The flower is reproductive parts of the angiosperm plant. They are including 4 basic parts of the flower: Carpel, Stamens, Sepals and Petals.
During angiosperm plant reproduction, 2 structure are formed which are known as the Endosperm and a Zygote. Later a Zygote will grow and form a embryo and the endosperm is known for food source of plant embryo. Endosperm and Zygote forming process is known as double fertilization and it is a unique process found in angiosperms.
Steps involved in double fertilization are:
1) The pollen tube processing to release 2 sperm cells into an unfertilized ovule.
2) When one sperm cell fuses with the eggs to the formation of zygote and another sperm fuses with the 2 polar nuclei to the formation of endosperm this process is known as double fertilization.
3) After the completion of double fertilization, a fruit and seed develop.
