Advertisements
Advertisements
प्रश्न
Ovulation is induced by a hormone called ______.
Advertisements
उत्तर
Ovulation is induced by a hormone called luteinising hormone (LH).
Explanation:
LH (luteinising hormone) acts on the leydig cells and stimulates the synthesis and secretion of androgens. Androgens, in turn, stimulate the process of spermatogenesis.
APPEARS IN
संबंधित प्रश्न
Briefly describe the process of spermatogenesis.
Define spermiation.
Multiple choice question.
The given figure shows human sperm. Various parts of it are labelled as A, B, C, and D. Which labelled part represents acrosome?
At the time of birth, there are _______________ oocytes in the ovary of a female foetus.
Explain two main process in sexual reproduction.
Draw a labeled sketch of a spermatozoan.
Describe the structure of the human ovum with a neat labelled diagram.
Expand the acronym.
LH
Which of the following correctly describes the secondary oocyte?
Identify the proper order of spermatogenesis and choose the correct option.
Which is the correct order of steps occurring during spermatogenesis?
______ undergoes 2nd meiotic division during spermatogenesis.
Draw a labelled diagram of a Graafian Follicle.
The human male gamete is usually about ______ in length.
Identify the wrong statement from the following.
How many functional sperms and how many ova will be formed by a primary spermatocyte and a primary oocyte.
At the time of organogenesis, genes regulate the process at different levels and at different time due to ______.
Mark the odd one.
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?
If for a species 2n = 16, then during Ist prophase and IInd prophase of the meiotic division of a cell, how many tetrads and diads will be formed:
In human females, meiosis II is not completed until:
How many primary oocytes produce one oogonia?
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?
Which type of cell division forms spermatids from the secondary spermatocytes?
How many spermatozoa are formed from one secondary spermatocyte?
Given below are two statements.
- Statement I: The spermatids are non-motile and non-functional which get transformed into functional spermatozoa by the process of spermiogenesis.
- Statement II: During the process of this change, the spermatids remain held to each other and to Leydig's cells by cytoplasmic bridges.
In light of the above statements, select the correct answer from the option given below.
Sketch and label the process of oogenesis.
Distinguish between human sperm and ovum.
