List of practice Questions

Certain viruses used as biological control agents belong to the genus :

If the sequence of bases in DNA is ATTCGATG, then the sequence of bases in the transcript will be :

Cistron is a segment of DNA coding for a :

In a pedigree chart, if two unaffected individuals have a child with the trait, what is the most likely mode of inheritance for this trait ?

Select the statements that are true for a typical monocotyledonous embryo from the given options.
1. Scutellum is present towards the centre of the embryonal axis.
2. Embryonal axis of the lower end has radicle and root cap covered by coleoptile.
3. The portion of embryonal axis above the level of attachment of scutellum is epicotyl.
4. Shoot apex and few leaf primordia of embryo are enclosed in a hollow foliar structure.
Choose the correct answer from the following :

How is triple fusion achieved in these plants ?

If a natural population with 200 individuals is in Hardy-Weinberg equilibrium for a gene with two alleles A and a, and with the gene frequency of allele A of 0.8, the genotype frequency of Aa will be :

Describe the changes in the ovary and the uterus as induced by the changes in the level of pituitary and ovarian hormones during menstrual cycle in a human female.

Explain the structure of a mature embryo sac of a typical flowering plant.

Describe the Species-Area relationship as observed by Alexander von Humboldt, for a wide variety of taxa in nature.

State any two criteria for determining biodiversity hotspots.

Explain the working of a simple stirred-tank bioreactor.

Explain how human pro-insulin is processed in the cell to become a fully mature functional insulin.

Describe how human insulin is produced using the techniques of genetic engineering.

Describe what is meant by downstream processing.

Explain the beneficial role of the following, produced as a result of the processes of biotechnology, to mankind:
Cow named Rosie

Name and explain the role of inner and middle walls of the human female uterus.

Explain the beneficial role of the following, produced as a result of the processes of biotechnology, to mankind:
(α) −1−antitrypsin

Write the location and function of fimbriae in human female.

Alien species are highly invasive and are a threat to indigenous species. Substantiate this statement with the help of any two examples.

State any two criteria for determining biodiversity hotspots

If the birds have 18 pairs of autosomal chromosomes and a pair of sex chromosomes, fill in the blanks (i), (ii), (iii) and (iv) in the table given below. (Use symbols Z and W for sex chromosomes).

Explain the biological treatment of the major part of the sludge transferred from the large aeration tank into the anaerobic sludge digesters before its final release into the natural water bodies.

What do you mean by activated sludge in an STP?