300+ REAL TIME NEET Biology Objective Questions & Answers 2023

300+ TOP MCQs on Plant Taxonomy 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 Plant Taxonomy Multiple Choice Questions

MCQs on Plant Taxonomy :

1. Which of these is the most advanced phylogenetically among the dicotyledonous families?
(a) Scrophulariaceae
(b) Acanthaceae
(c) Umbelliferae
(d) Compositae

Answer

Answer: (d)

2. The substitute for the newly collected specimen when the original type material is missing in a herbarium is entitled as
(a) Holotype
(b) Neotype
(c) Lectotype
(d) Isotype

Answer

Answer: (b)

3. If all the puddles and ponds are destroyed, the entities likely to be destroyed are
(a) Plasmodium
(b) Ascaris
(c) Leishmania
(d) Trypanosoma

Answer

Answer: (a)

4. In the five-kingdom system of classification, into which kingdom would you classify nitrogen-fixing organisms and archaea?
(a) Fungi
(b) Plantae
(c) Protista
(d) Monera

Answer

Answer: (d)

5. This is considered as a demerit of the ‘Engler and Prantl’ in the system of classification
(a) Gymnosperms are placed between monocotyledons and dicotyledons
(b) Dicotyledons are placed after monocotyledons
(c) Dicotyledons are placed before monocotyledons
(d) Gymnosperms are placed among Dicotyledons

Answer

Answer: (b)

6. The basis of Phenetic classification is
(a) Observable characteristics of existing entities
(b) The ancestral lineage of existing organisms
(c) Dendrograms based on DNA characteristics
(d) Sexual characteristics

Answer

Answer: (a)

7. Difference between the natural system of plant classification and artificial system of classification is
(a) Considers only one vegetative character
(b) Considers all the similarities between plants
(c) Considers only one floral character
(d) All of the above

Answer

Answer: (b)

8. This system of classification was used by Linnaeus
(a) Phylogenetic system
(b) Natural system
(c) Artificial system
(d) Asexual system

Answer

Answer: (c)

9. Pick the right sequence of taxonomic categories
(a) division-class-family-tribe-order-genus-species
(b) division-class-family-order-tribe-genus-species
(c) division-class-order-family-tribe-genus-species
(d) division-order-class-family-genus-tribe-species

Answer

Answer: (c)

10. ‘New Systematics’ term was coined by
(a) Linnaeus
(b) Bentham and Hooker
(c) A.P. de Candolle
(d) Juliane Huxley

Answer

Answer: (d)

300+ TOP MCQs on Animal Cell and Answers

MCQs on Animal Cell :

1. Name the non-membrane bound organelle exclusively found only in animal cell
(a) Sphaerosome
(b) Glyoxisome
(c) Centriole
(d) Peroxisome

Answer

Answer: (c)

2. If the centromere is located at the proximity of the end of a chromosome, it is known as
(a) Acrocentric
(b) Metacentric
(c) Telocentric
(d) Submetacentric

Answer

Answer: (a)

3. Flagella, centrioles, cilia and basal bodies possess evident similar structural elements and arrangements. This can lead to this probable hypothesis
(a) Loss of basal bodies should lead to loss of all cilia, flagella, and centrioles
(b) Disruption of one of these types of the structure should necessarily disrupt each of the others as well
(c) Natural selection for motility must select for microtubular arrays in circular patterns
(d) Motor proteins such as dynein must have evolved before any of these four kinds of structure

Answer

Answer: (c)

4. In the plasma membrane of a few animals, the presence of cholesterol
(a) makes the membrane less flexible permitting it to sustain greater pressure from within the cell
(b) enables the membrane to stay fluid more easily when the temperature of the cell drops
(c) enables the animal to remove hydrogen atoms from saturated phospholipids
(d) enables the animal to add hydrogen atoms to unsaturated phospholipids

Answer

Answer: (b)

5. Component of plant cell absent in animal cell is
(a) Cytoplasm
(b) Cell membrane
(c) Cell wall
(d) Nucleus

Answer

Answer: (c)

6. The association of more than one ribosome with a single molecule of mRNA complex is known as
(a) Polysome
(b) Polypeptide
(c) Polymer
(d) Polysaccharide

Answer

Answer: (a)

7. This cell organelle is responsible to extract energy from carbohydrates to form ATP
(a) Mitochondrion
(b) Lysosome
(c) Ribosome
(d) Chloroplast

Answer

Answer: (a)

8. Balbiani rings are the sites of
(a) RNA and protein synthesis
(b) Lipid synthesis
(c) Nucleotide synthesis
(d) Polysaccharide synthesis

Answer

Answer: (a)

9. This organism is not an example of eukaryotic cells
(a) Euglena viridis
(b) Escherichia coli
(c) Amoeba proteus
(d) Paramoecium caudatum

Answer

Answer: (b)

10. The main site of different types of cellular activities is
(a) Mitochondrion
(b) Nucleus
(c) Cytoplasm
(d) Plasma membrane

Answer

Answer: (c)

300+ TOP MCQs on Regeneration and Answers

MCQs on Regeneration :

1. What is the basic principle of regeneration?
(a) two stage turbine used
(b) steam after coming out of turbine is circulated to boiler
(c) steam after coming out of condenser is circulated to boiler
(d) steam after coming out of condenser is circulated to turbine

Answer

Answer: (d)

2. Mean temperature of heat addition is ___________ due to regeneration
(a) not affected
(b) increases
(c) decreases
(d) varied exponentially

Answer

Answer: (b)

3. Ideal regenerative rankine cycle
(a) efficiency is unaffected
(b) efficiency is increased
(c) work output is increased
(d) heat supplied is increased

Answer

Answer: (b)

4. The following organs can be regenerated in echinodermata
(a) digestive system
(b) arms and disc
(c) pedicellariae
(d) eyes

Answer

Answer: (b)

5. The damaged leg is not regenerated in
(a) frog
(b) frog’s tadpole
(c) salamander
(d) crab

Answer

Answer: (a)

6. The repair by cell division in the damaged tissue is
(a) Exponential growth
(b) morphallaxis regeneration
(c) epimorphosis regeneration
(d) deaccelerating growth

Answer

Answer: (c)

7. Restorative regeneration is
(a) healing of wounds
(b) formation of a new entity from a piece of body of parent
(c) a regular process in which the dead and worn out cells of some organs are continuously replaced by new cells
(d) all of these

Answer

Answer: (c)

8. Ability to give rise to a new individual entity from body parts is
(a) Reproduction
(b) Fragmentation
(c) Regeneration
(d) Fission

Answer

Answer: (c)

9. Regeneration of a limb or tail is an example of
(a) Epimorphosis
(b) Autotomy
(c) Compensatory hypertrophy
(d) Morphallaxis

Answer

Answer: (a)

10. Epimorphosis is regeneration through
(a) repatterning of existing cells as seen in hydra
(b) reinitiation of division in existing cells, followed by patterning, as occurs in amphibians such as newts
(c) repatterning of existing cells as seen in amphibians
(d) reinitiation of embryonic growth from remaining cells as seen in Hydra

Answer

Answer: (b)

300+ TOP MCQs on Diseases Caused by Bacteria and Answers

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

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

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)