How many eggs are released by a human ovary in a month? How many eggs do you think would have been released if the mother gave birth to identical twins? Would your answer change if the twins born were fraternal?

How many eggs are released by a human ovary in a month ? How many eggs to do think would have been released , if the mother gave birth to identical twins ? Would you answer change if the twins born were fraternal ?

How many eggs do you think were released by the ovary of a female dog which gave birth to 6 puppies?

How many eggs and sperms are required to produce fraternal twins ?

How many ova are released in the case of maternal twins and fraternal twins respectively in human ?

At the time of ovulation usually a single ovum is released. However, how many ova are released in case of identical twins and fraternal. Twins respectively?

Given below is a diagram of the reproductive system of a human female : (i) Name the parts numbered 1-6. (ii) Normally after how many days does an ovary release an egg? (iii) Where are the sperms released during coitus? (iv) What do the sperms do after being released ? (V) What is the function of the organ numbered 5 ? (vi) How many days does it normally take from the fertilisation of the egg up to the birth of the baby?

A flower of tomato plant following the process of sexual reproduction produces 200 viable seeds. Answer the following question giving reasons: (a) What would have been the minimum number of ovules present per-pollinated pistil ? (b) How many microspore mother cells would minimally be required to produce requisite number of pollen grains ? (c) How many pollen grains must have minimally pollinated the carpel ? (d) How many male gametes would have used to produce these 200 viable seeds ? How many megaspore mother cells were required in this process?

A flower of tomato plant following the process of sexual reproduction produces 240 viable seeds. Answser the following questions giving reasons : (a) What is the minimum number of pollen grains that must have been involved in the pollination of its pistil ? (b) What would have been the minimum number of ovules present in the ovary ? (c) How many megaspore mother cells were involved ? (d) What is the minimum number of microspore mother cells involved in the above case ? (e) How many male gametes were involved in this case ?

How many times did you fall ill in the last one year? What were the illnesses? (a) Think of one change you could make in your habits in order to avoid any of/most of the above illnesses. (b) Think of one change you would wish for in your surroundings in order to avoid any of/most of the above illnesses.