Advertisements
Advertisements
प्रश्न
Explain two main process in sexual reproduction.
उत्तर
Two main processes involved in sexual reproduction:
- Gamete formation: In this, meiotic division occurs due to which chromosome number is reduced to half. As a result, haploid gametes are formed (2n → n).
- Fertilization: Haploid male gamete (n) fuses with the haploid female gamete (n) to form a diploid zygote (2n).
APPEARS IN
संबंधित प्रश्न
Give the name and function for ‘A’ and ‘B’ from the diagram given below
Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.
Body breaks up into several fragments and each fragment starts to live as a new individual. This is ______ type of reproduction.
In meiosis, the number of chromosomes becomes ___________.
The glandular accessory organ which produces the largest proportion of semen is ____________.
Draw a labeled sketch of a spermatozoan.
Describe the structure of the human ovum with a neat labelled diagram.
Expand the acronym.
hCG
The part labelled as ______ contains the energy source that facilitates sperm motility.
Formation of ____________ is an indication of the termination of oogenesis.
Draw a labelled diagram of a Graafian Follicle.
In human beings, the largest cell formed during Oogenesis is ______
Sertoli cells are found in ______.
By which process sperms released from the seminiferous tubules?
Which of the following contains a fluid filled cavity called antrum?
The nutritive cells found in seminiferous tubules are ______.
Mark the odd one.
Germ cells present in the seminiferous tubules undergo ______
The spermatogonia undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above.
During reproduction, the chromosome number (2n) reduces to half (n) in the gametes and again the original number (2n) is restored in the offspring, What are the processes through which these events take place?
