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प्रश्न
Draw a labelled diagram of sperm.
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उत्तर १
उत्तर २
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संबंधित प्रश्न
Give the name and function for ‘A’ and ‘B’ from the diagram given below
How is 'oogenesis' markedly different from 'spermatogenesis' with respect to the growth till puberty in the humans?
Define spermiogenesis.
Implantation of embryo occurs in ______.
______ type of reproduction occurs without fusion of gametes.
If newborns are produced at the age of menopause, they may be with some abnormalities. Why?
The male sex hormone testosterone is secreted from ____________.
Define gametogenesis.
Describe the structure of the human ovum with a neat labelled diagram.
During spermatogenesis, spermatogonium grows in size to become ______.
Which of the following are known as the nourishing cells present in the seminiferous tubules?
Identify the labels (i-iv) in the given diagram of the ovum.
Identify the longest period of menstrual cycle.
Draw a labelled diagram of a Graafian Follicle.
Middle piece of mammalian sperm possesses ______.
A reaction of granules content which harden the zona pellucida and ensures sure block to polyspermy is ______.
Preparation of sperm before penetration of ovum is ______.
1st polar body is formed at which stage of oogenesis?
Mark the odd one.
Read the following and answer from given below:
Oogenesis is the process of the formation of an ovum in the ovaries. It consists of three phases: multiplication, growth, and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of the pituitary gland to secrete LH and FSH.
Which cell division is involved in the formation of secondary oocytes?
Observe the given figure and answer the questions that follow.
- Label A and B.
- Identify the process.
- What happens during this process and what is formed?
Growth hormone of pituitary is more effective in ______.
How many primary oocytes produce one oogonia?
The mother germ cells are transformed into a mature follicle through series of steps. Provide the missing steps in the blank boxes.
Which type of cell division forms spermatids from the secondary spermatocytes?
How many spermatozoa are formed from one secondary spermatocyte?
Name the germinal layers from which the following organs develop: Tongue, heart, sweat glands, vagina, mammary glands, kidney.
Answer the following:
How many primary spermatocytes and oocytes are required for the formation of 100 spermatozoa and ova?
