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प्रश्न
Fill in the blank.
---------- type of reproduction occurs without fusion of gametes.
उत्तर
Asexual type of reproduction occurs without fusion of gametes.
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संबंधित प्रश्न
Draw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions
(a) Acrosome
(b) Nucleus
(c) Middle piece
Fill in the blank.
Implantation of embryo occurs in ------
In meiosis, the number of chromosomes becomes ___________.
Give scientific reason.
Older women are more likely to give birth to children with some abnormalities.
Sex organs produce gametes which are diploid.
Answer the following type of question Assertion (A) and Reason (R).
(A) - Head of the sperm consists of acrosome and mitochondria.
(R) - Acrosome contains spiral rows of mitochondria.
Mention the differences between spermiogenesis and spermatogenesis.
During spermatogenesis, spermatogonium grows in size to become ______.
______ undergoes 2nd meiotic division during spermatogenesis.
How many functional sperms and how many ova will be formed by a primary spermatocyte and a primary oocyte.
Besides activating the egg another role of a sperm is to carry ______ to egg.
Preparation of sperm before penetration of ovum is ______.
1st polar body is formed at which stage of oogenesis?
What does figure represent?
Observe the given figure and answer the questions that follow.
- Label A and B.
- Identify the process.
- What happens during the process and what is formed?
The mother germ cells are transformed into a mature follicle through series of steps. Provide the missing steps in the blank boxes.
During spermatogenesis meiosis occurs in ______.
Explain Oogenesis with diagram.
Distinguish between human sperm and ovum.
