Select Your Favourite
Category And Start Learning.

  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • Nucleus of ovules contains which of the following?

    Question: Nucleus of ovules contains which of the following?

    Options:

    Haploid (n) chromosome number
    Diploid (2n) chromosome number
    Triploid (3n) chromosome number
    Both (a) and (b)

    ✅ Explanation:
    -The nucleus of ovules contains the diploid (2n) chromosome number. The ovule is the female reproductive unit of a flowering plant. It is a small, round or oval structure attached to the ovary by a stalk called the funiculus. The ovule consists of two integuments, a nucellus, and an embryo sac.
    -The integuments are the outer layers of the ovule, protecting the nucellus and the embryo sac. The nucellus is the central tissue of the ovule. It contains the embryo sac. The embryo sac, which is the female gametophyte, holds the egg cell and other cells necessary for fertilization.
    -The nucleus of the embryo sac contains a diploid (2n) chromosome number. This means that two sets of chromosomes—one from the maternal parent and one from the paternal parent. These two sets of chromosomes are essential for fertilization to occur.

    • Explanation of Other options explanations:
    -Haploid (n) chromosome number: The haploid chromosome number is the number of chromosomes in a gamete (sex cell). Gametes are produced by meiosis, a process that reduces the chromosome number by half.
    -Triploid (3n) chromosome number: The triploid (3n) chromosome number is the number of chromosomes that an individual has that has three sets of chromosomes. This can occur when there is an error in meiosis or mitosis. 

    🔴Related Terminologies::
    -Ovule: The female reproductive unit of a flowering plant.
    -Integuments: The outer layers of the ovule.
    -Nucellus: The central tissue of the ovule.
    -Embryo sac: The female gametophyte.
    -Fertilization: The process of combining male and female gametes to form a zygote.
    -Chromosome: A thread-like structure that contains genetic material.

      0
      Your Cart
      Your cart is emptyReturn to Shop