List of practice Questions

Describe the Species-Area relationship as observed by Alexander von Humboldt, for a wide variety of taxa in nature.
Explain the beneficial role of the following, produced as a result of the processes of biotechnology, to mankind:
Cow named Rosie
Write the location and function of fimbriae in human female.
Explain the beneficial role of the following, produced as a result of the processes of biotechnology, to mankind:
(α) −1−antitrypsin
Name and explain the role of inner and middle walls of the human female uterus.
What do you mean by activated sludge in an STP?
Alien species are highly invasive and are a threat to indigenous species. Substantiate this statement with the help of any two examples.
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.
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).
18 pairs of autosomal chromosomes
State any two criteria for determining biodiversity hotspots
Name the type of heterogamety observed in most birds.
Which two main inflammation-causing chemicals are produced by the mast cells in such an immune response?
Name the main type of antibody produced by the immune system in response to this disease.
What is the term used for the milk produced during the initial days of lactation?
Many children in the metro cities are suffering from a very common exaggerated response of the immune system to certain weak antigens in the air. (i) What is the term used for the above mentioned disease?
Explain why the milk produced by the mother during the initial days of lactation is considered to be very essential for the newborn infant.
Assertion (A): In some species of asteraceae and grasses, seeds are formed without fertilization.
Reason (R): Formation of fruit without fertilization is called parthenocarpy.
Why are restrictions imposed on MTP in India? Up to how many weeks or trimesters, is MTP considered relatively safe for a female, if necessary to perform, by a medical practitioner?
Expand PID. Name any two common viral infections transmitted through sexual contact in human females.
Arrange the given important steps of decomposition in their correct order of occurrence in the breakdown of complex organic matter and explain the fourth step in the process.
\( \fbox{Catabolism}\) \(\fbox{Leaching} \fbox{Fragmentation} \fbox{Mineralisation} \fbox{Humification}\)
Bacteria growing anaerobically on cellulosic material produce large amounts of which gases? Select the correct option.
Assertion (A): In humans, filariasis is characterized by inflammation of the lower limbs.
Reason (R): Filarial worm usually lives in the lymphatic vessels of the lower limbs.
The animals that evolved into the first amphibians during evolutionary history were:
Assertion (A): Isolated single cells can be fused to produce somatic hybrids.
Reason (R): Cells selected for somatic hybridisation have desirable characters.
Given below are few statements with reference to the human male reproductive system:
1. Paired seminal vesicles, prostate gland and bulbourethral gland constitute the male accessory glands.
2. Secretions of the male accessory glands constitute the seminal plasma.
3. Secretions of the bulbourethral glands help in the lubrication of the penis.
4. Enlarged end of the the penis is known as foreskin.
5. Seminal plasma is rich in fructose, calcium and certain enzymes.
Choose the option with all true statements from the given options: