List of top Biology Questions

In his observations of small black birds in the Galapagos Islands, Darwin found that all the finches arose from the original ancestor:
Bottled fruit juices are clearer as compared to those made at home, as they are clarified by the use of:
The cloning site present in the tetracycline resistance gene of \textit{E. coli cloning vector pBR322 is:
A characteristic property that distinguishes a malignant tumor from a benign tumor is:
Which of the following do \textit{not follow the law of independent assortment?
Select the statements that are true for the seed of angiosperm from the given options:
(i) Non-albuminous seeds have no residual endosperm.
(ii) Residual, persistent nucellus in wheat is known as perisperm.
(iii) Integuments of ovules harden as tough protective seed coat.
(iv) Metabolic activity of the embryo slows down in dormancy.
Choose the correct option:

Study the pedigree chart of a family sharing the inheritance of sickle cell anemia.

The trait traced in the above pedigree chart is:

Given below are a few statements with respect to spermatogenesis in a human male.
(i) Sperms are released from the seminiferous tubules by the process of spermiation.
(ii) Spermiogenesis involves the maturation of spermatids into sperms.
(iii) Spermatogonia produce spermatids by the process of spermiogenesis.
(iv) Meiosis II in secondary spermatocytes results in the formation of four equal haploid spermatids.
(v) Primary spermatocyte completes the first meiotic division forming two equal, diploid cells called secondary spermatocytes.
Choose the option with all true statements from the given options:
If a natural population with 50 individuals is in Hardy-Weinberg equilibrium for a gene with two alleles A and a, with the gene frequency of allele A of 0.6, the genotype frequency of Aa will be:
SNPs in Human Genome Project refers to:

Regulation of lac operon by repressor is referred to as:

The process of splicing in eukaryotes represents the dominance of the:

The graph showing the concept of activation energy of enzyme is given below. Observe the graph and choose the correct option for M and N.


 

In zygote intrafallopian tube transfer, the embryo upto ____ stage is transferred into the fallopian tube
Read the given statements and choose the correct option: Statement I: Gemmae are green unicellular sexual buds which develop in receptacles called gemma cups. Statement II: Protonema develops directly from a spore
Identify the incorrect statement with respect to the rules of Binomial Nomenclature.
The cell wall less prokaryote among the following is
Malignant malaria is caused by

Match the contents of List-I with List-II

 

Which of the following statements are correct with respect to Frogs?
The 'Sixth Extinction' of species, presently in progress, is ____ times faster than the previous five episodes of mass extinctions.
Which among the three layers of blood vessel wall-Tunica intima, Tunica media and Tunica Externa is comparatively thin in the veins?
A student observed the T.S. of a plant organ slide under microscope. He observed the vascular bundles in the stelar region as conjoint collateral and open. Based on these features of vascular bundle, identify the correct option from below.

In a practical examination, the following pedigree chart was given as a spotter for identification. The students identify the given pedigree chart as

RNA polymerase II is responsible for the transcription of ____