Category: NEET Biology Objective Questions

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 Vascular Tissues Multiple Choice Questions

MCQs on Vascular Tissues :

1. Lymph differs from blood in having
(a) much more of water content
(b) no WBC
(c) no RBC
(d) no protein

2. RBC will __________ if kept in 0.8% NaCl
(a) burst
(b) shrink
(c) remain unchanged
(d) none of the above

3. Division of WBC takes place by
(a) meiosis
(b) amitosis
(c) mitosis
(d) none of the above

4. Least constancy of shape is exhibited by
(a) blood platelets
(b) epithelial cells
(c) WBC
(d) RBC

5. In Camels, erythrocytes are
(a) oval and nucleated
(b) oval and non-nucleated
(c) circular, nucleated and biconvex
(d) circular, non-nucleated and biconcave

6. In adults. RBC is formed in
(a) the liver
(b) the thymus
(c) the spleen
(d) the bone marrow of long bones

7. Average life span of human RBC is
(a) 90 days
(b) 100 days
(c) 120 days
(d) none of the above

8. When the count of WBC drops below the optimum level of blood it is known as
(a) leukemia
(b) leukopenia
(c) anemia
(d) all of the above

9. Protein content is the highest in the lymphatics of
(a) kidney
(b) liver
(c) below the skin
(d) all the above

10. Abnormal rise in number of RBC count is known as
(a) polycythemia
(b) anaemia
(c) leukemia
(d) all of the above

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 Regulation Of Gene Expression In Eukaryotes Multiple Choice Questions

MCQs on Regulation Of Gene Expression In Eukaryotes :

1. Eukaryotic entities
(a) in the presence of cAMP molecule, it carries out protein synthesis
(b) have only operons assisting in gene expression
(c) transcription takes place in the nucleus and translation in the cytoplasm
(d) transcription occurs in the cytoplasm and translation in nucleus

2. A genomic DNA possesses functioning units, a group of genes under the influence of promoters known as
(a) genes
(b) operons
(c) anticodon
(d) codon

3. All regulatory proteins possess a common DNA binding motif that are specific flexess in their protein chains permitting them to interlock with
(a) the outside groove of DNA helix
(b) the major groove of DNA helix
(c) the minor groove of DNA helix
(d) inner groove of DNA helix

4. Regulatory proteins turn transcription off through binding to a site rapidly at the front of the promoter and many times even overlaps the promoter, this site is the
(a) regulatory site
(b) operator site
(c) suppressor site
(d) transcriptional control site

5. Seemingly, the vertebrate cells contain a protein which binds to clusters of 5-methylcytosine ensuring that the bound gene stays in the “off” position. This regulation on the role of gene regulation is an outcome of
(a) Methylation
(b) Translation
(c) Enhancer expression
(d) operator suppression

6. The transcriptional gene control in eukaryotes is mediated by
(a) metabolites that bind to the cis-acting elements
(b) trans-acting factors failing to bind to cis-acting elements
(c) trans-acting factors binding to cis-acting elements
(d) repressor proteins that bind to operator sites

7. Basic tools of genetic regulation is the ability of some proteins to bind to specific
(a) regulatory DNA sequences
(b) regulatory RNA sequences
(c) enzymes of cells
(d) promoter portions of genes

8. In the regulation of gene expression, this is an incorrect statement
(a) in the bacteria, it permits to replicate with no control
(b) in the bacteria, it permits to adapt to changing environments
(c) permits the maintenance of homeostasis is multicellular entities
(d) permits the functioning of multicellular entities on the whole

9. There are these many histones in the core of a nucleosome
(a) 8
(b) 6
(c) 4
(d) 2

10. In eukaryotes and bacteria, most common form of regulation is
(a) promoter control
(b) translation control
(c) repressor control
(d) transcriptional control

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 Dinoflagellates Multiple Choice Questions

MCQs on Dinoflagellates :

1. Dinoflagellates belong to
(a) Monera
(b) Protista
(c) Fungi
(d) Animalia

2. In which of the following organisms, the cell wall is made up of two overlapping shells?
(a) Chrysophytes
(b) Euglenoids
(c) Slime moulds
(d) Dinoflagellates

3. Most of the Dinoflagellates are
(a) Multicellular
(b) Unicellular
(c) Zooflagellates
(d) both (a) and (b)

4. Dinoflagellates are
(a) biflagellate
(b) uniflagellate
(c) they have many flagella
(d) non flagellate

5. Food reserve in Dinoflagellates is
(a) Alginic acid
(b) Fucoxanthin
(c) Starch
(d) Mannitol

6. Which of the following pigments are not present in Dinoflagellates?
(a) Fucoxanthin
(b) Chlorophyll a
(c) Chlorophyll b
(d) Chlorophyll c

7. Which of the following protozoans show bioluminescence?
(a) Opaline
(b) Noctiluca
(c) Paramecium
(d) Entamoeba

8. Marine phytoplankton is mostly represented by
(a) Brown algae
(b) Green algae
(c) Seaweeds
(d) Diatoms and Dinoflagellates

9. The function of pusule in Dinoflagellate is
(a) Osmoregulation
(b) Food production
(c) Food storage
(d) Movement

10. Dinoflagellates are
(a) Photosynthetic
(b) Holophytic
(c) Autotrophic
(d) All of these

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 Epithelial Tissue Multiple Choice Questions

MCQs on Epithelial Tissue :

1. Find the correct match
(a) The moist surface of the buccal cavity has glandular epithelium
(b) The tubular parts of nephrons have cuboidal epithelium
(c) The inner surface of bronchioles have squamous epithelium
(d) The inner lining of salivary ducts have ciliated epithelium

2. The ciliated columnar epithelium is present in
(a) bronchioles and Fallopian tube
(b) bile duct and oesophagus
(c) Fallopian tube and urethra
(d) Eustachian tube and stomach lining

3. Which types of cells line blood vessels?
(a) columnar epithelium
(b) smooth muscle tissue
(c) connective tissue
(d) squamous epithelium

4. Gap, tight and adhering junctions are found in
(a) epithelial tissue
(b) connective tissue
(c) muscular tissue
(d) neural tissue

5. Which types of epithelial cells form Stratum germinativum?
(a) cuboidal
(b) ciliated
(c) columnar
(d) squamous

6. An epithelial tissue having thin flat and closely packed cells that are arranged edge to edge are found in
(a) the inner lining of cheeks
(b) the inner lining of the stomach
(c) the inner lining of the fallopian tube
(d) the outer surface of the ovary

7. Which of the following layer has actively dividing cells?
(a) stratum lucidum
(b) stratum corneum
(c) stratum compactum
(d) stratum malpighi

8. Tissue having very less or no intercellular matrix is
(a) epithelial
(b) connective
(c) cardiac
(d) muscular

9. The inner lining of the vagina, urethra and oesophagus is made up of
(a) Columnar epithelium
(b) Stratified squamous epithelium
(c) Squamous epithelium
(d) Ciliated epithelium

10. Simple cuboidal epithelium is found in
(a) Thin bronchioles
(b) Choroid of eye
(c) Sweat gland
(d) All of the above

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 Diversity in Living World Multiple Choice Questions

MCQs on Diversity in Living World :

1. Compared to genus, which of the following is less general in characters?
(a) Family
(b) Species
(c) Division
(d) Class

2. For wheat, which of the following combinations is correct?
(a) Genus Triticum, family Poaceae, order Poales, Class Monocotyledonae
(b) Genus Triticum, family Poaceae, order Poales, Class Dicotyledonae
(c) Genus Triticum, family Poaceae, order Sapindales, Class Monocotyledonae
(d) Genus Triticum, family Anacardiaceae, order Poales, Class Monocotyledonae

3. Regulation of cells’ activity takes place through
(a) Flow of substances
(b) Flow of energy
(c) Flow of hormones
(d) Flow of smoke

4. Assertion(a): “Biological species” concept helps to ask how species are formed

Reason(r): Concept of biological species is centred around the question of how reproductive isolation comes about
(a) Both (a) and (r) are correct, but (r) is not the explanation for (a)
(b) Both (a) and (r) are correct, (r) is the correct explanation for (a)
(c) (a) and (r) both are incorrect
(d) (a) is true, (r) is incorrect

5. The correct sequence of taxonomic categories is:
(a) Species -> genus -> order -> phylum
(b) Species -> order -> genus-> kingdom
(c) Genus -> species -> order -> kingdom
(d) None of these

6. Taxonomic hierarchy refer to
(a) Classification of species based on the fossil record
(b) A list of botanists or zoologists who have worked on the taxonomy of a species or group
(c) a group of senior taxonomists who decide the nomenclature of animals and plants
(d) Stepwise arrangement of all categories for classification of animals and plants

7. Which one of these categories has real existence?
(a) Species
(b) Genus
(c) Kingdom
(d) Phylum

8. A true species comprises of a population
(a) Interbreeding
(b) Sharing the same niche
(c) Reproductively isolated
(d) Feeding over the same food

9. Nicotiana sylvestris flowers only during long days while N.tabacum flowers only during short days. Under different photoperiods, they can be induced to flower at the same time and can be cross-fertilized to produce self-fertile offsprings. What is the best reason for considering Nicotiana sylvestris and N.tabacum as separate species?
(a) They are reproductively distinct
(b) They fail to interbreed in nature
(c) They are physiologically different
(d) They are distinct morphologically

10. One of the first acts in taxonomy is
(a) Identification
(b) Description
(c) Naming
(d) Classification