UPSC  >  Science & Technology for UPSC CSE  >  Test: Biology - 1 Download as PDF

Test: Biology - 1


Test Description

20 Questions MCQ Test Science & Technology for UPSC CSE | Test: Biology - 1

Test: Biology - 1 for UPSC 2022 is part of Science & Technology for UPSC CSE preparation. The Test: Biology - 1 questions and answers have been prepared according to the UPSC exam syllabus.The Test: Biology - 1 MCQs are made for UPSC 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Biology - 1 below.
Solutions of Test: Biology - 1 questions in English are available as part of our Science & Technology for UPSC CSE for UPSC & Test: Biology - 1 solutions in Hindi for Science & Technology for UPSC CSE course. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free. Attempt Test: Biology - 1 | 20 questions in 20 minutes | Mock test for UPSC preparation | Free important questions MCQ to study Science & Technology for UPSC CSE for UPSC Exam | Download free PDF with solutions
1 Crore+ students have signed up on EduRev. Have you?
Test: Biology - 1 - Question 1

Consider the following statements about Vechur cattle breed
1. Vechur is the world’s largest cow.
2. It is indigenous breed found in Kerala.
3. Its milk protein has medicinal value.
4. Commonly used in farming as draught animal.

Q. Which of the statements given above are correct?

Detailed Solution for Test: Biology - 1 - Question 1

The Vechur cattle is a rare breed of Bos indicus, named after the village Vechoor in Kottayam district of the state of Kerala in India. Its average length is 124 cm and height is 87 cm, according to the Guineas Book of Records, it’s the smallest cattle breed in the world. Its milk is considered to have medicinal properties. Unlike other cattle, they can resist drought by being hardy towards it.

Test: Biology - 1 - Question 2

Consider the following statements:
1. Warm-blooded animals can remain active in cold environment in which cold-blooded animals can hardly move.
2. Cold-blooded animals require much less energy to survive than warm-blooded animals.

Q. Which of the statements given above is/are correct?

Detailed Solution for Test: Biology - 1 - Question 2

Cold-blooded animals require much less energy to survive than warm-blooded animals

Test: Biology - 1 - Question 3

Consider the following statements:
1. Human beings have 23 pairs of chromosomes.
2. Sex chromosome in human male is named XX.
3. Chromosomes are best seen in metaphase.

Q. Which of the statements given above are false about chromosomes?

Detailed Solution for Test: Biology - 1 - Question 3

Humans are diploid organisms by having two members or homologous chromosomes in a pair. Total 23 pairs of chromosomes exist in each somatic cell of the body. Total 46 chromosomes occur. One particular pair individually in male and female determines their respective sex. This one pair is XX in females and XY in males. All the 46 chromosomes in pairs can be seen under microscope at metaphase stage in the cells which are undergoing mitosis.

Test: Biology - 1 - Question 4

Match List-I (animals) with List-II (class/ phylum) and select the correct answer from the codes given below:

Detailed Solution for Test: Biology - 1 - Question 4

Octopus belongs to Mollusca.

Jellyfish belongs to Coelenterata.

Silver fish belongs to Arthropoda.

Bombay Duck belongs to Pisces.

Test: Biology - 1 - Question 5

Which of the following professionals are more likely to run the risk of a permanent change in their cell’s DNA?
1. Researchers from carbon-14 isotope
2. X-ray technician
3. Coal miner
4. Dyer and painter

Q. Select the correct answer from the codes given below:

Detailed Solution for Test: Biology - 1 - Question 5

X-Ray technique, C14 and Dyer technique is a very important technique for a permanent change in DNA. But in coal miner, C14 amount is very very less. So, there is no risk of change in DNA.

Test: Biology - 1 - Question 6

Consider the following statements about gene
1. Word ‘Gene’ was given by Johanssen.
2. Genes are situated on chromosomes.
3. Genes located at different locus and having different expression are multiple alleles.

 Q. Which of the statements given above are true?

Detailed Solution for Test: Biology - 1 - Question 6

A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins.
An allele is a variant form of a gene. Explained in greater detail, each gene resides at a specific locus (location on a chromosome) in two copies, one copy of the gene inherited from each parent. The copies, however, are not necessarily the same. When the copies of a gene differ from each other, they are known as alleles. A given gene may have multiple different alleles, though only two alleles are present at the gene’s locus in any individual.

Test: Biology - 1 - Question 7

Consider the following statements:
1. Frogs can breathe by lungs as well as skin.
2. Gills are not present in any stage of lifespan of frogs.

Q. Which of the statements given above is/are correct?

Test: Biology - 1 - Question 8

Consider the following statements:
Assertion(A): In humans, female sex is determined by XX-chromosomes.
Reason(R): Male sex is determined by YY-chromosomes.

Detailed Solution for Test: Biology - 1 - Question 8

Humans are diploid with 23 pairs of chromosomes. Of this, 22 pairs are somatic and the one pair is sex chromosomes. This particular pair exists as XX in human females and XY in males. The presence of two X chromosomes contributes to the female phenotype while presence of only one Y chromosome is responsible for the human to be male. Females produce only X-type haploid gametes and males produce two types (X and Y) of haploid gametes. Fusion of either X or Y of male gamete with the female gamete determines the sex of the offspring.

Test: Biology - 1 - Question 9

With reference to the work of human kidney, consider the following statements:
1. After the waste is removed in the kidney, the cleaner blood is sent back through renal artery.
2. From Bowman’s capsule, the filtered liquid passes through tiny tubes where much of the glucose is reabsorbed and sent back to the blood in the renal vein.

Q. Which of the statements is/are correct?

Detailed Solution for Test: Biology - 1 - Question 9

After the removal of wastes from the kidneys, the cleaner blood is sent back through the renal veins. From Bowman’s capsule, the filtered liquid passes through tiny tubes where much of the glucose is reabsorbed and sent back to the blood in the renal vein.

Test: Biology - 1 - Question 10

Consider the following statements:
Assertion (A): Drinking of whisky increases the frequency of urination.
Reason (R): Alcohol intake speeds up the secretion of vasopressin in the body.

Detailed Solution for Test: Biology - 1 - Question 10

Alcohol acts as a diuretic. It actually promotes urine production by inhibiting the release of antidiuretic hormone, or vasopressin from the pituitary gland. In turn, reduced levels of antidiuretic hormone prevent the kidneys from reabsorbing water and thereby increase urine production.

Test: Biology - 1 - Question 11

With reference to the human body, consider the following statements:
1. The production of somatropin goes up when a person exercises.
2. Men’s testes produce progesterone.
3. Women’s adrenal glands secret testosterone.
4. Stress causes the adrenal to release very less amount of cortisol than usual.

Q. Which of these statements are correct?

Detailed Solution for Test: Biology - 1 - Question 11

During exercise, the level of somatotropin goes up. Testes secrete testosterone and females’ adrenal glands secrete progesterone. Stress causes the adrenal glands to release very less amount of cortisol (a steroid hormone) than usual.

Test: Biology - 1 - Question 12

Match List-I with List-II and select the correct answer from the codes given below:

Detailed Solution for Test: Biology - 1 - Question 12

Werner Arber along with American researchers Hamilton Smith and Daniel Nathans, had won the 1978 Nobel Prize in Physiology or Medicine for the discovery of restriction endonucleases. For the first time, Feldmann and Marks had demonstrated the production of transgenic plants without invitro step. They just grew the Arabidopsis seeds with the gene containing Agrobacterium tumefaciens. Kary Mullis is the inventor of the technique PCR for in vitro synthesis of DNA fragments. Reverse transcriptase was discovered by Howard Temin and independently isolated by David Baltimore in 1970.

Test: Biology - 1 - Question 13

Consider the following statements:
Assertion (A): Human diet should compulsorily contain glycine, serine and tyrosin.
Reason (R): Essential amino acids can’t be synthesized in the human body.

Detailed Solution for Test: Biology - 1 - Question 13

Essential amino acids or indispensable amino acids are those amino acids which cannot be synthesized de novo by any particular organism. In humans also, some amino acids are essential and must be supplied in the diet. The amino acids regarded as essential for humans are phenylalanine, valine, threonine, tryptophan, methionine, leucine, isoleucine, lysine, and histidine.

Test: Biology - 1 - Question 14

Oxygen transportation in a human body takes place through
1. Blood
2. Lungs
3. Tissue
The correct sequence of transportation is

Detailed Solution for Test: Biology - 1 - Question 14

Lungs are the organs which actually oxygenate up the blood by exchanging the carbon dioxide to outside and taking up oxygen which comes to them by breathing in by the organism. This oxygen in the blood is then transported to each tissue of the body. Integrated and coordinated works of circulatory and respiratory systems are responsible for this.

Test: Biology - 1 - Question 15

Consider the following statements:
Assertion (A): Scientists can cut apart and paste together DNA molecules at will, regardless of the source of the molecules.
Reason (R): DNA fragments can be manipulated from restriction endonucleases and DNA ligases.

Detailed Solution for Test: Biology - 1 - Question 15

In genetic engineering, a DNA segment from any foreign source can be inserted into any other genetic material. The enzymes, called restriction endonucleases, act like scissors that cut apart a particular or specific part of the DNA. This cut out DNA piece can be inserted into other genetic material which has been cut to make space for containing the foreign DNA. The DNA once inserted can be ligated by enzymes known as ligases.

Test: Biology - 1 - Question 16

Consider the following statements:
Assertion (A): ‘DNA fingerprinting’ has become a powerful tool to establish paternity and identity of criminals in rape and assault cases.
Reason (R): Trace evidences, such as hairs, saliva and dried semen, are adequate for DNA analysis.

Detailed Solution for Test: Biology - 1 - Question 16

DNA is the core material which constitutes the genetic makeup of an individual. The DNA of every individual shows unique properties of nucleotide bases that renders a particular fingerprint. DNA is found in all types of body cells.
Thus both the statements are correct.

Test: Biology - 1 - Question 17

Which of the following sectors is not included in the NITI Aayog’s focus regarding “National AI Strategy”:

1.  Agriculture 

2. MSME 

3. Education 

4. Infrastructure 

5. Oil and Natural Gas 

Select the correct code: 

Detailed Solution for Test: Biology - 1 - Question 17

NITI Aayog has decided to focus on five sectors that are envisioned to benefit the most from AI (in solving societal needs): 

Healthcare: Increased access and affordability of quality healthcare. 

Agriculture: Enhanced farmers’ income, increased farm productivity and reduction of wastage. 

Education: Improved access and quality of education. 

Smart Cities and Infrastructure: Efficient connectivity for the burgeoning urban population. 

Smart Mobility and Transportation: Smarter and safer modes of transportation and better traffic and congestion management.

Test: Biology - 1 - Question 18

Match List-I with List-II and select the correct answer from the codes given below:

Detailed Solution for Test: Biology - 1 - Question 18

Sternum is the breast bone. Clavicle is the collar bone. Patella is the knee cap. Scapula is the shoulder blade.

Test: Biology - 1 - Question 19

Match the hormones in List-I with items in List-II and select the correct answer from the codes given below:

Detailed Solution for Test: Biology - 1 - Question 19

Adrenalines are secreted in the situations of exercise, fear or any kind of dangerous situation. Oestrogens are steroid hormones or female primary sex hormones. Insulin is responsible for the metabolism of sugar in the body. Pheromones are the compounds which are secreted generally from insect; go out to affect the other insects. Some of the pheromones include alarm pheromones, food trail pheromones, and sex pheromones.

Test: Biology - 1 - Question 20

Match List-I with List-II and select the correct answer from the codes given below:

Detailed Solution for Test: Biology - 1 - Question 20

Ptyalin digests the starch in the mouth. Pepsin is a proteolytic enzyme which breaks down the proteins into simple peptides. Renin is responsible for converting angiotensinogen to angiotensin. Oxytocin is a hormone that stimulates the contraction of smooth muscles of the body.

86 videos|349 docs|235 tests
Use Code STAYHOME200 and get INR 200 additional OFF
Use Coupon Code
Information about Test: Biology - 1 Page
In this test you can find the Exam questions for Test: Biology - 1 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Biology - 1, EduRev gives you an ample number of Online tests for practice