Category: NEET Biology Objective Questions

300+ TOP MCQs on Diseases Caused by Bacteria and Answers

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Diseases Caused by Bacteria Multiple Choice Questions

MCQs on Diseases Caused by Bacteria :

1. Diseases caused due to the inflammation of the vermiform appendix of the digestive system is known as
(a) Appendectomy
(b) Appendicitis
(c) Intestinal cancer
(d) Amoebic dysentery

Answer

Answer: (b)

2. This set includes bacteria diseases
(a) Malaria, poliomyelitis, mumps
(b) Mumps, cholera, typhoid
(c) Plague, Leprosy, Diphtheria
(d) Measles, Tuberculosis, Tetanus

Answer

Answer: (c)

3. In Ayurveda, the disease that is called as Vishuchika is
(a) Chicken pox
(b) Smallpox
(c) Cholera
(d) Diphtheria

Answer

Answer: (c)

4. Vibrio cholerae is a motile bacteria belonging to the group of
(a) Lophotrichous
(b) Peritrichous
(c) Monotrichous
(d) Amphitrichous

Answer

Answer: (c)

5. ‘Syphilis’, a sexually transmitted diseases is caused by
(a) Vibrio
(b) Leptospira
(c) Treponema pallidum
(d) Pasteurella

Answer

Answer: (c)

6. This is a symptom of Diphtheria
(a) Bleeding gum
(b) Hydrophobia
(c) Suffocation
(d) Excessive watering

Answer

Answer: (a)

7. Widal test is used for susceptibility of
(a) Typhoid
(b) Cholera
(c) Malaria
(d) Cholera

Answer

Answer: (a)

8. “Tuberculosis” is caused by
(a) Malnutrition
(b) Protozoan
(c) Bacterium
(d) Virus

Answer

Answer: (c)

9. ‘Cholera’ is caused by
(a) Fungi
(b) Bacteria
(c) Virus
(d) Protozoan

Answer

Answer: (b)

10. ‘Leprosy’ is caused by
(a) Salmonella
(b) Mycobacterium
(c) TMV
(d) Monocystis

Answer

Answer: (b)

300+ TOP MCQs on Ecological Succession and Answers

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Ecological Succession Multiple Choice Questions

MCQs on Ecological Succession :

1. In ecological succession, the intermediate developmental phase is known as
(a) ecesis
(b) climax
(c) nudation
(d) sere

Answer

Answer: (d)

2. This is true about secondary succession
(a) follows primary succession
(b) takes place on a deforested site
(c) is similar to primary succession except that it has a relatively slower pace
(d) begins on a bare rock

Answer

Answer: (b)

3. Lithosphere serves as a reservoir for
(a) nitrogen cycles
(b) carbon cycles
(c) oxygen cycles
(d) phosphorus cycles

Answer

Answer: (d)

4. This is not a climax vegetation
(a) grassess
(b) savannah
(c) forests
(d) hydrophytes

Answer

Answer: (d)

5. This about ecological succession is incorrect
(a) food chain relationships becomes more complex
(b) species diversity increases as succession proceeds
(c) role of decomposers becomes all the more important
(d) is a random process

Answer

Answer: (d)

6. An early seral community possesses this characteristic
(a) high species diversity
(b) open mineral cycling
(c) narrow niche specialization
(d) low community production

Answer

Answer: (b)

7. On sand, ecological succession is
(a) halosere
(b) xerosere
(c) hydrosere
(d) psammosere

Answer

Answer: (d)

8. Order of basic processes involved in succession is
(a) invasion -> stabilization -> completion and co action -> reaction -> nudation
(b) nudation -> stabilization -> completion and co action -> invasion -> reaction
(c) invasion -> nudation -> completion and co action -> reaction -> stabilization
(d) nudation -> invasion -> completion and co action -> reaction -> stabilization

Answer

Answer: (d)

9. Process of successful establishment of species in a new area is known as
(a) climax
(b) sere
(c) ecesis
(d) invasion

Answer

Answer: (c)

10. In an ecological succession, the final stable community is known as
(a) climax community
(b) ultimate community
(c) final community
(d) seral community

Answer

Answer: (a)

300+ TOP MCQs on Linkage and Crossing Over and Answers

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Linkage and Crossing Over Multiple Choice Questions

MCQs on Linkage and Crossing Over :

1. Crossing-over takes place in the
(a) Diakinesis stage
(b) Anaphase stage
(c) Pachytene stage
(d) Leptotene stage

Answer

Answer: (c)

2. There are 4 pairs of chromosomes in a Drosophila. The linkage groups present in it are
(a) one more than the pair of chromosomes
(b) one less than the pair of chromosomes
(c) four
(d) eight

Answer

Answer: (c)

3. Percentage of crossing over is more when
(a) genes are located in a different cell
(b) genes are not linked
(c) linked genes are located close to each other
(d) linked genes are located far apart from each other

Answer

Answer: (d)

4. If the percentage of crossing over between two genes is 10, then the distance between two genes will be
(a) 5 morganoid
(b) 10 morgan
(c) 20 centimorgans
(d) 40 map units

Answer

Answer: (b)

5. Alleles of different genes that are on the same chromosome can occasionally be separated by a phenomenon called
(a) crossing over
(b) continuous variation
(c) epistasis
(d) pleiotropy

Answer

Answer: (a)

6. Repulsion and coupling are two faces of
(a) mutation
(b) chiasmata
(c) linkage
(d) crossing over

Answer

Answer: (c)

7. If gene frequency between genes a and c is 2%; b and c is 13%; b and d 4%; a and b 15%; c and d 17 and a and d 19%. The sequence of genes in a chromosome is
(a) a,d,b,c
(b) d,b,a,c
(c) a,b,c,d
(d) a,c,b,d

Answer

Answer: (d)

8. This is the reason why Mendel did not recognize linkage phenomenon in his experiments
(a) he studied only pure plants
(b) he did not have a powerful microscope
(c) characters he studied were situated on different chromosomes
(d) many chromosomes to handle

Answer

Answer: (c)

9. In a linear chromosome map distance between 4 loci is as follows a-b is 10%, a-d is 3%, b-c is 4% and a-c is 6%. The crossover frequency between c and d is
(a) 4-12%
(b) 3-6%
(c) 9%
(d) 3%

Answer

Answer: (d)

10. Where does this evidence come from? – crossing over takes place at a four-stranded stage and not at two stranded stages of chromosomes.
(a) studies on linkage maps of chromosomes in Drosophila
(b) studies of meiosis in maize
(c) 4:4 organization of ascospores in Neurospora
(d) 2:2:2:2 organization of ascospores in Neurospora

Answer

Answer: (d)