List of top Biology Questions

Match the following sexually transmitted diseases (Column - I) with their causative agent (Column - II) and select the correct option.
Column - IColumn- II
(a)Gonorrhea(i)HIV
(b)Syphilis(ii)Neisseria
(c)Genital Warts(iii)Treponema
(d)AIDS(iv)Human Papilloma virus
Which statement is wrong for Krebs' cycle?
A disease caused by an autosomal primary non-disjunction is
The pivot joint between atlas and axis is a type of
A dioecious flowering plant prevents both:
Plants which produce characterstic pneumatophores and show vivipary belong to
Mycorrhizae are the example of
The genotypes of a Husband and Wife are IAIB and IAi. Among the blood types of their children, how many different genotypes and phenotypes are possible?
The process of separation and purification of expressed protein before marketing is called
Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?
Which ecosystem has the maximum biomass?
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?
With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?
Functional megaspore in an angiosperm develops into
Viroids differ from viruses in having :
Which among these is the correct combination of aquatic mammals?
A gene whose expression helps to identify transformed cell is known as
Which one of the following is related to Ex-situ conservation of threatened animals and plants?
Root hairs develop from the region of
Which of the following RNAs should be most abundant in animal cell?
Life cycle of Ectocarpus and Fucus respectively are
Which of the following facilitates opening of stomatal aperture?
Capacitation occurs in
Which of the following is correctly matched for the product produced by them?
The association of histone H1 with a nucleosome indicates: