Structure of Gametes
Structure of Gametes
Each sperm is a small cell of about 50 length and 2.5
diameter. It constits of a head. piece and the tail regions. The head consists of the nucleus and structure called the acrosome at the tip. The acrosome secretes lytic substance that break down the wall of the egg for fertilisation. The beating of the tail propels the sperms forward at the rate of 1 - 4 mm per minute.
Each egg or ovum is a spherical cell much bigger than the sperm. It mainly consists of a single nucleus and some reserve food made of lipid droplets.
The head of the sperm consists of the nucleus and structure called the _______________ at the tip. | |||
| Right Option : A | |||
| View Explanation | |||
Which of the following are correct : (a) The head of sperm consists of the nucleus and structure called the acrosome at the tip. (b) Ovum mainly consists of a single nucleus and some reserve food made of lipid droplets. (c) Sperm mainly consists of a single nucleus and some reserve food made of lipid droplets. | |||
| Right Option : A | |||
| View Explanation | |||
Which of the following are correct : (a) Ovum mainly consists of a single nucleus and some reserve food made of lipid droplets. (b) Sperm mainly consists of a single nucleus and some reserve food made of lipid droplets. | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [10]
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
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Prisha Gupta
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
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Ayan Ghosh
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Archit Segal
7thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
