List of top Biology Questions

Identify the wrong statement in context of heartwood.
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?
An important characteristic that Hemichordates share with Chordates is
Alexander Von Humbolt described for the first time
Which of the following in sewage treatment removes suspended solids?
Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement.
Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?
The function of copper ions in copper releasing IUD's is :
The water potential of pure water is
Which of the following components provides sticky character to the bacterial cell?
Which of the following options best represents the enzyme composition of pancreatic juice?
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by
Artificial selection to obtain cows yielding higher milk output represents
Plants which produce characterstic pneumatophores and show vivipary belong to
Spliceosomes are not found in cells of
An example of colonial alga is
Zygotic meiosis is characteristic of
Which among these is the correct combination of aquatic mammals?
Functional megaspore in an angiosperm develops into
Select the mismatch :
Mycorrhizae are the example of
Frog's heart when taken out of the body continues to beat for some time.
Select the best option from the following statements:
  1. Frog is a poikilotherm
  2. Frog does not have any coronary circulation
  3. Heart is "myogenic" in nature 
  4. Heart is autoexcitable
With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?
Which statement is wrong for Krebs' cycle?
Life cycle of Ectocarpus and Fucus respectively are