Biology - Online Test
Q1. Which one represents regulative function of forests
Answer : Option B
Explaination / Solution:
The regulative function of forest is storage and release of gases. Plants in forests converts carbon dioxide gas into oxygen during photosynthesis.
Q2. The stage connecting meiosis I and meiosis II is
Answer : Option B
Explaination / Solution:
Interkinesis is the stage connecting meiosis I and meiosis II cell division. It is a brief period between two stages. No DNA synthesis occurs during this period. The cellundergoes preparation for next divisional stages.
Q3. Two geographical regions, separated by high mountain ranges are
Answer : Option C
Explaination / Solution:
The geographical region Palarctic and Oriental are separated by high mountain ranges. The geographical separation do not allow the gene flow as mating is not possible between member of species.
Q4. The famous botanical garden, Kew is located at
Answer : Option D
Explaination / Solution:
Kew Gardens is a botanical garden in southwest London that houses the "largest and most diverse botanical and mycological collections in the world"
Q5. Name the female condom introduced by Hindustan Latex and female health company of England in India.
Answer : Option A
Explaination / Solution:
Femidom is a female condom introduced by Hindustan latex and female health company of England in India. It is quite effective and prevents unwanted pregnancy along with sexually transmitted disease.
Q6. What does X replesent in the followwing diagram:
Answer : Option C
Explaination / Solution:
Figure shown above represent translation process in which protein is produced. Ribosome provide site for protein synthesis and t-RNA brings the amino acids. The ‘x’ is the polypeptide chain produced.
Q7. Assertion: Each spermatogonium is diploid and contains 46 chromosomes.
Reason: Some spermatogonia, primary spermatocytes complete the meiotic division to form four haploid cells.
Answer : Option D
Explaination / Solution:
Each spermatogonium is a diploid cell and contains 23 pairs of chromosomes. Some spermtogonia, called primary spermatocytes complete the first meiotic division to form two haploid cells. So, assertion is correct but reason is incorrect.
Q8. All are inorganic pollutants except
Answer : Option D
Explaination / Solution:
Inorganic Pollution are things found naturally but because of human production of goods have been altered to drastically increase the amount of them in the environment (some examples include arsenic, lead, as well as many different air pollutants). Examples of Inorganic Pollution: Lead, Zinc, Copper, Cadmium.
Motor oil is an organic pollutant.
Q9. What's the difference between genetic drift and change due to natural selection?
Answer : Option A
Explaination / Solution:
Genetic drift and change due to natural selection are different as genetic drift does not involve completion between the members of a species but in natural selection there is completion between members.
Q10. In human female, menstruation can be deferred by the administration of
Answer : Option D
Explaination / Solution:
Menstruation can be deferred by the administration of combination of hormone estrogen and progesterone. Follicle stimulating hormone and luteinizing hormone are produced during ovulation.
