A taxonomist observes scales as one of the morphological features to identify certain fish species. Which one of the following option has all the correct combination?

Which type of primary sex determination mechanism is followed in human?

Black water fever is a special manifestation of malaria caused by:

Which of the following glycolytic enzymes catalyzes substrate level ATP synthesis?

Energy refers to:

Biological species concept gives emphasis mainly on:

Which one represents correct structure of a 5' cap of a mRNA?

A 58-years- old women goes to her physician because she is having difficulty in threading needles. After a thorough phisical examination, she is diagnosed with presbiopia (old eyes). Her condition is caused by which of the following?

Cushing syndrome is due to hyper secretion of:

Which one of the following is most commonly used cryoprotectant?

Bubonic plague involves:

Faucet aerators are useful in reducing loss of:

The strength of the selection is expressed as the coefficient of selection' s'. If the contribution of the favoured genotype is taken to be 1, the contribution of the genotype selected against will be:

Eusocial organisation is found in all species of:

Torsion is the characteristic feature of the larval development of which Molluscan class?

Normal splitting of the second heart sound into two components is increased during inspiration because

The Ψ and Φ bonds are regular features of the:

Which of the following behavioural component can be placed in the category of agonistic behavioural pattern?

Between fertilization and the first cleavage division, actin filaments pull the cytoplasm of the frog egg towards the point of sperm entry in a process called:

Which of the following substance is released from neurons in the GI tract and causes smooth muscle relaxation?

If a sample of DNA is found to have the base composition (mole ratios) of adenine, 40; thymine, 22; guanine, 21; and cytosine 17, which of the following conclusions will be most appropriate?

Ecotone or Transition zone has species diversity:

A fate map:

The internal canals of Echionodermata connect with sea water outside, through a structure known as:

Which one of the following best describes morphallactic types of regeneration?

Glycolipids and sphingomyelin are synthesized in:

After secretion of trypsinogen into duodenum, the enzyme is converted into its active form, trypsin, by which of the following?

Which one of the following is an indication that ovulation has taken place?

A newborn becomes lethargic after feeding and increases his respiratory rate. He becomes virtually comatose, responding only to painful stimuli, and exhibits mild respiratory alkalosis. Suspicion of a urea cycle disorder is aroused and evaluation of serum amino acid levels is initiated. In the presence of hyperammonemia, production of which of the following amino acid is always increased?

In which of the following animals notochord does not persist throughout life?

Which of the events is likely to protect the host DNA from EcoRI digestion?

Filarial worm that can be seen in the conjunctiva of eye is:

Connexin is an example of:

The Savanna grassland ecosystem is characterized by:

Which one of the following animals will possess Atoke and Epitoke regions in its body?

What type of cleavage pattern is observed in frog embryos?

Most of the glucose that is filtered through the glomerules undergoes reabsorption in:

Identify which of the listed parasites is not an ectoparasite?

The term multivoltine is related with:

If a male affected for a given trait has all sons affected but no daughters affected, then the trait is likely to be :

Which of the following is an example of gram negative bacteria ?

Due to mutation one amino acid may get replaced by another amino acid. such mutation are termed as:

Pharyngeal gill slits :

Which of the following represents secondary structural organization of a protein ?

If the recombination frequency between X-Y loci is 12 %, X-Z loci is 4 % and Y-Z loci is 8%, then the order of the loci on the chromosome is :

Which of the following example illustrates multiple allelism ?

A suitable example of DNA - repair deficient disorder in human is :

During gastrulation in xenopus, the blastocoel :

Somatic recombination in immunoglobin genes account for:

A double strandred DNA assumes helix conformation but double strandred RNA makes non-helical stem like structure. This is mainly due to presence of :

In poriferans,different type of canal system is observed. Find out the correct combination of animal species with its canal system.

If a enzyme catalyzes phosphorylation of a substrate using ATP, to which major class this enzyme belongs?

For a given gene, a diploid individual will contain :

Diabetes insipidus is due to deficiency of :

The tumour suppressor gene mutated in most human cancer is :

Which one is precursor for the synthesis of sterols ?

Promoter of a gene is reported to be present at- 35 position. That means this sequence is located at :

Hookworm infection leads to the deficiency of :

Which one of the following option has all the correct matches ?