Related Questions

To prevent polyspermy, fertilization initiates the cortical reaction which involves
ক Alteration of the binding affinity of sperm receptors on the surface
খ Inhibition of the acrosomal reaction in subsequent sperm
গ Release of the contents of the cortical granules by fusion with the plasma membrane
ঘ Development of gap between the zona pellucida and the plasma membrane
ঙ Rapid membrane repolarization
দ্বিনিষেকের ফলে উৎপন্ন শস্য কী ধরনের হয়? (What type of endosperm is produced from double fertilization ?)
ক হ্যাপ্লয়েড (Haploid)
খ ডিপ্লয়েড (Diploid)
গ ট্রিপ্লয়েড (Triploid)
ঘ হেক্সাপ্লয়েডে (Hexaploid)
Who among the following devised the technique IVF (In vitro Fertilization)?
ক Sir Frank Whittle
খ Robert Edwards
গ Edward Jenner
ঘ Dr. Martin Cooper
Fertilization in human takes place inside
ক Uterus
খ Oviduct
গ Ovigland
ঘ None of these
The site of fertilization is in the - 
ক Uterus
খ Ovary
গ Fallopian tube
ঘ Vagina
The sum of the weights of P and Q is more than that of R and S taken together.The wight of P is half as much as the sum of the weights of Q and S. The sum of the weights of P and R is the same as the wight of Q and S taken together. Which of the following statements must be incorrect?
ক Q weighs more than S
খ All the above statements are correct
গ Q weighs more than R
ঘ P weighs more than Q
The sum of the weights of P and Q is more than that of R and S taken together. The weight of P is half as much as the sum of the weights of Q and S. The some of the weights of P and R is the same as the weights of Q and S taken together. Which of the following statements must be incorrect?
ক Q weighs more than S
খ All the above statements are correct
গ Q weighs more than R
ঘ P weighs more than Q
A short distance athlete has taken 60 seconds to cover 100 meters . If he makes 30 steps in 9 seconds , how many steps has he taken in that time?
ক 130
খ 170
গ 173
ঘ None of these
A short distance athlete has taken 60 sec to cover 100m. If he makes 30 steps in 9, sec how many steps has he taken in that time?
ক 130
খ 170
গ 173
ঘ None
If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task?
ক 2 : 1
খ 5 : 3
গ 7 : 5
ঘ None of these

Next steps