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.
Which of the following is/are the parts of sperm ? | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following are correct : (a) Each egg or ovum is a spherical cell much smaller than the sperm. (b) A sperm has a head, a middle piece and a tail. (c) Each egg or ovum is a spherical cell much bigger than the sperm. | |||
| Right Option : B | |||
| 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 | |||
Students / Parents Reviews [10]
About 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.
Shreya Shrivastava
8thOne 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.
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10thAbhyas 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
10thMy 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
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Hiya Gupta
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thI 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
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
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10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
