List of top Biology Questions

Floral parts are un-wettable in case of hydrophilous flowers.
Sex determination in honey bees is XX-XY type.
A child may have O blood group if his father and mother have A and AB blood group respectively.
What are primary lymphoid organs?
Organic farming does not include chemical fertilizers.
Cyclosporin A, which is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus named ________.
ELISA stands for ________.
The sterilisation procedure in males is called ________.
Coconut water is an example of a ________ endosperm.
During spermiogenesis, nebenkern of the sperm develops from ________ of the spermatid.
Which of the following is correct according to Chargaff's rules?
The initiator codon, AUG codes for which of the following amino acids?
An ideal contraceptive should be:
The number of megaspores formed from one megaspore mother cell is:
Heart shaped embryo is the feature of:
Which of the following organic acids can be produced on commercial scale by Aspergillus niger?
The cavity present in the blastula is called:
Emergency contraceptives are effective if used within:
Transplantation of tissues/organs to save certain patients often fails due to rejection of such tissues/organs by the patient. Which type of immune response is responsible for such rejections?
If the amount of adenine in a DNA is 30%, then according to Chargaff's rules, the amount of Uracil and Guanine present in the DNA respectively are:
BOD stands for:
During spermatogenesis, the number of sperms that are formed from 40 spermatogonia, 30 primary spermatocytes, 25 secondary spermatocytes and 15 spermatids respectively are:
The method of directly injecting a sperm into ovum in assisted reproductive technology is called:
Main cause of Klinefelter's syndrome is:
What is antitoxin?