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objective question  1. what do you mean by circuit  ? a. closed circuit           b. open circuit           c. both             d. none of these  2. what   is unit of  potential difference ? a. volt                            b. ampere               c. newton          d none of these  3. what is ohm's law ? a. v/I                            b. I/v                        c. both                d none of these  4. if work done by 5 c charge is 10 J then find out potential difference  a. 2 amp                ...

CLASS 10 HOW DO ORGANISM REPRODUCE  DOWNLOAD LINK  https://knowingonline.in/2020/07/24/class-x-2/ Question.40 State one genetically different feature between sperms and eggs of humans. What is its consequence? Answer.  The sex chromosome of human male is XY. A sperm of human male carries either an X chromosome or one Y chromosome. The sex chromosome of human female is XX and hence, the egg always carries the X chromosome. If a sperm carrying X chromosome fertilises an egg which carries X chromosome, then the’ child born will be a girl. If a sperm carrying Y chromosome fertilises an egg which carries X chromosome, then the child born will be a boy. Name the most effective contraceptive which prevents spread of such diseases. Answer. (a) Role of placenta in the development of human embryo: A special tissue develops between the uterine wall and the embryo (foetus) called placenta, where exchange of nutrients, glucose and oxygen takes place. The developing embryo will a...

class 10 video  what ohm's law? Ohm’s Law states that the current flowing through a conductor is directly proportional to the potential difference applied across its ends, provided the temperature and other physical conditions remain unchanged. Mathematically it can be represented as, objective question based on electric current open this link for objective    https://nexttopperinstitute.blogspot.com/2020/07/class-10th-objective-questions-on.html   Class 10       HOW TO ORGANISM REPRODUCE Question. 1(i) What is fertilisation? Distinguish between external fertilisation and internal fertilisation. (ii) What is the site of fertilisation in human beings? Answer. (i) Fertilisation is defined as the fusion of a male gamete (sperm) with a female gamete (an ovum or egg) to form a zygote during sexual reproduction. (ii) The site of fertilisation in human beings is in the fallopian tube of female reproductive system. Question.2 Define th...

CLASS 10  CHAPTER 1 CHEMISTRY LINKS  OPEN LINK AND DOWNLOAD  https://knowingonline.in/2020/07/21/class-x/ https://drive.google.com/file/d/1311YW6EBqA4PrJ5lW-ATeAL5FPDK6kEf/view?usp=sharing

Class 10th biology how to organism reproducs 

VIDEO AND DEFINITION GIVEN BELOW WHAT IS REPRODUCTION : Reproduction is the process by which living    organisms  produce new individuals of the same species. Reproduction is not necessary to maintain the life of an organism but is necessary for life on earth  and increase in the population of a species. If organisms do not  reproduce, their population decreases and species will  become extinct.

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