List of top Biology Questions

Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?
A dioecious flowering plant prevents both:
Plants which produce characterstic pneumatophores and show vivipary belong to
The process of separation and purification of expressed protein before marketing is called
Transplantation of tissues/organs fails often due to non-acceptance by the patient's body. Which type of immune-response is responsible for such rejections?
Mycorrhizae are the example of
Which among these is the correct combination of aquatic mammals?
With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?
In case of poriferans the spongocoel is lined with flagellated cells called:
Which one of the following is related to Ex-situ conservation of threatened animals and plants?
Which of the following represents order of 'Horse'?
A temporary endocrine gland in the human body is
Root hairs develop from the region of
A disease caused by an autosomal primary non-disjunction is
Viroids differ from viruses in having :
Which of the following RNAs should be most abundant in animal cell?
Which of the following facilitates opening of stomatal aperture?
Capacitation occurs in
Life cycle of Ectocarpus and Fucus respectively are
The association of histone H1 with a nucleosome indicates:
The DNA double helix is exposed
The DNA fragments separated on an agarose gel can be visualised after staining with
A baby boy aged two years is admitted to play school and passes through a dental check - up. The dentist observed that the boy had twenty teeth. Which teeth were absent?
Which cells of "Crypts of Lieberkuhn" secrete antibacterial lysozyme ?
Functional megaspore in an angiosperm develops into ?