List of top Biology Questions

Given below are two statements:
Statement I: In general, a higher auxin to cytokinin ratio will induce root formation under in vitro culture conditions in plants.
Statement II: NAA is a cytokinin and BAP is an auxin.
In light of the above statements, choose the most appropriate answer from the options given below.

Starting with a single cell, what will be number of cells after 'n' cycles of cell division, given that in each cycle every cell divides into two cells?

Which of the following viruses is a plus-sense single-stranded RNA virus?

In plant mycorrhizal fungi association, what is the most appropriate exchange between two organisms or partners?

Which one of the following statements most appropriately describes the concept of 'Codon Bias'?

Which of the following cell types has the highest surface area to volume ratio?

Complete the following statement with the correct option:
Agrobacterium-mediated plant transformation in the laboratory

In case of prokaryotes, the start codon is usually preceded by a sequence complementary to the

Herpes simplex virus maintains latency in

Given below are two statements – one is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): Human adeno-associated virus is used to deliver single-stranded DNA as a vaccine that does not require multiple booster doses.
Reason (R): Such vaccines are generally administered along with an adenovirus or a herpesvirus to avoid multiple booster doses.
In light of the above statements, choose the most appropriate answer from the options given below:

Francis & Crick proposed the scheme called Central Dogma in 1958. Which of the following processes was NOT covered in this scheme?

Given below are two statement - one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: Bacterial lipopolysaccharide (LPS) on its own does not induce memory B-cell in humans.
Reason R: LPS does not activate T-cell.
In light of the above statements, choose the most appropriate answer from the options given below:

The principle driving force behind movement of water in plants is known as

Bacillus thuringiensis CryA controls certain caterpillar pests by

At G2/M checkpoint the cell cycle will arrest if

Choose the option that correctly matches for an immunosuppressant and its origin

Which of the following techniques is commonly used to identify protein-protein interaction?

Which one of the following is NOT an auxin?

These are regarded as major causes of biodiversity loss:
A. Over exploitation
B. Co-extinction
C. Mutation
D. Habitat loss and fragmentation
E. Migration
Choose the correct opisdn:

Formation of interfascicular cambium from fully developed parenchyma cells is an example for

Identify the set of correct statement:
A. The flowers of Vallisneria are colourful and produce nectar.
B. The flowers of waterlily are not pollinated by water.
C. In most of water-pollinated species, the pollen grains are protected from wetting.
D. Pollen grains of some hydrophytes are long and ribbon like.
E. In some hydrophytes, the pollen grains are carried passively inside water.
Choose the correct answer from the options given below

Match List I with List II: