List of top Biology Questions

Expand the term ZIFT.
Pneumotaxic center is present in:
In DNA replication, the Okazaki fragments are joined by
In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is 100x (kcal m-2)yr-1, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?
Which of the following hormones is not synthesized by anterior pituitary gland?
Write any three differences between anther and ovule.
Which fruit has fibrous mesocarp?
What are vestigial organs?
Explain the term Emigration.
Give the different steps involved in the formation of mRNA from hnRNA.
Describe the nervous system in Planaria with a well-labeled diagram.
Which cells of islets of Langerhans produce the hormone insulin?
Give the name and type of I, IV and VII cranial nerves.
Double fertilization is a characteristic of
Describe the physiological effects and applications of ethylene.

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Chemical composition of DNA.

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Autogamy
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Allergy
Answer the following questions:
(A) Stability of DNA is higher than that of RNA. How?
(B) What are the roles of the three parts of the transcription unit?
Write brief notes on the following:
Implantation
How is gene of interest amplified by using PCR?
Explain double fertilization.
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Phosphorus cycle
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Primary immunity
Describe the structure of microsporangium.