300+ REAL TIME NEET Biology Objective Questions & Answers 2023

300+ TOP MCQs on Spirogyra and Answers Quiz Exam [Latest]

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 Spirogyra Multiple Choice Questions

MCQs on Spirogyra :

1. Find the incorrect match
(a) Nostoc – water blooms
(b) Basidiomycetes – puffballs
(c) Spirogyra – motile gametes
(d) Sargassum – Chlorophyll

Answer

Answer: (c)

2. Which of the following does not have a sexual mode of reproduction?
(a) Volvox
(b) Spirogyra
(c) Nostoc
(d) Ulothrix

Answer

Answer: (c)

3. Spirogyra belongs to which of the following classes?
(a) Chlorophyceae
(b) Phaeophyceae
(c) Cyanophyceae
(d) Rhodophyceae

Answer

Answer: (a)

4. Which of the following is false about Spirogyra?
(a) nucleolus is complex
(b) heterothallism
(c) each chloroplast contains a single pyrenoid
(d) chromosomes are polycentric

Answer

Answer: (c)

5. The ladder-like structure formed in Spirogyra is the result of
(a) Asexual reproduction
(b) Direct conjugation
(c) Lateral conjugation
(d) Scalariform conjugation

Answer

Answer: (d)

6. Ribbon-shaped chloroplast is the characteristic feature of
(a) Spirogyra
(b) Chlamydomonas
(c) Riccia
(d) Ulothrix

Answer

Answer: (a)

7. The type of sexual reproduction in Spirogyra is
(a) isogamous
(b) anisogamous
(c) oogamous
(d) cleistogamous

Answer

Answer: (a)

8. In Spirogyra, pyrenoids are present in
(a) cell wall
(b) cytoplasm
(c) nucleus
(d) chloroplast

Answer

Answer: (d)

9. Spirogyra reproduce sexually by
(a) fragmentation
(b) conjugation
(c) somatogamy
(d) akinetes formation

Answer

Answer: (b)

10. Which of the following is also known as pond silk
(a) Ulothrix
(b) Spirogyra
(c) Nostoc
(d) Anabaena

Answer

Answer: (b)

300+ TOP MCQs on Paramecium and Answers

MCQs on Paramecium :

1. Unicellular eukaryotes are grouped in
(a) Protista
(b) Monera
(c) Fungi
(d) Archaea

Answer

Answer: (a)

2. In Paramecium, osmoregulation occurs through
(a) body surface
(b) pseudopodia
(c) nucleus
(d) contractile vacuole

Answer

Answer: (d)

3. In Paramecium, genetic information is stored in
(a) all the nuclei present
(b) mitochondria
(c) micronucleus
(d) macronucleus

Answer

Answer: (c)

4. Phylum Protozoa is classified based on
(a) size
(b) shape
(c) number of nuclei
(d) locomotory organ

Answer

Answer: (d)

5. Conjugation as a mode of reproduction is present in
(a) ciliata
(b) flagellata
(c) sarcodina
(d) sporozoa

Answer

Answer: (a)

6. In Paramecium, food is ingested through
(a) cytoproct
(b) cytopyge
(c) cytosome
(d) cytopharynx

Answer

Answer: (c)

7. Trichocyst of Paramecium is required for
(a) osmoregulation
(b) nutrition
(c) reproduction
(d) defence

Answer

Answer: (d)

8. Paramecium are
(a) holophytic
(b) holozoic
(c) parasitic
(d) saprobiotic

Answer

Answer: (b)

9. In Paramecium, metabolic activities and growth is regulated by
(a) macronucleus
(b) micronucleus
(c) both (a) and (b)
(d) contractile vacuole

Answer

Answer: (a)

10. In Paramecium, both autogamy and conjugation are called sexual reproduction because of
(a) rejuvenation
(b) gene combination
(c) the fusion of haploid gametes
(d) involvement of two individuals

Answer

Answer: (c)

300+ TOP MCQs on Species Diversity and Answers

MCQs on Species Diversity :

1. The following practice has led to the maximum damage to the diversity of Indian forests
(a) Block cutting
(b) Selective harvesting
(c) Jhum cultivation
(d) Taungya cultivation

Answer

Answer: (c)

2. Plant species on the verge of extinction as a result of over-exploitation is
(a) Gloriosa
(b) Centella
(c) Podophyllum
(d) All of the above

Answer

Answer: (c)

3. This endangered animal is the source of the world’s finest, lightest, warmest and the most expensive wool – the shahtoosh
(a) Cheetal
(b) Kashmiri goat
(c) Nilgai
(d) Chiru

Answer

Answer: (d)

4. This group of vertebrates comprises of the highest number of endangered species
(a) Fishes
(b) Birds
(c) Reptiles
(d) Mammals

Answer

Answer: (d)

5. Indri-indri lemur is found in
(a) India
(b) Sri lanka
(c) Madagaskar
(d) Mauritius

Answer

Answer: (c)

6. This is not under situ conservation
(a) Botanic Garden
(b) National park
(c) Statuary
(d) Biosphere reserve

Answer

Answer: (a)

7. One of the endangered species of the Indian medicinal plants is
(a) Garlic
(b) Ocimum
(c) Nependenthes
(d) Podophyllum

Answer

Answer: (d)

8. Siberian crane is a regular visitor of bird sanctuary
(a) Bharatpur (Rajasthan)
(b) Ranaganathittu (Karnataka)
(c) Lalbagh (Karnataka)
(d) Vedanthangal (T.N)

Answer

Answer: (a)

9. Sacred groves are useful in
(a) Preventing soil erosion
(b) generating environmental awareness
(c) conservation rare and threatened species
(d) year-round flow of water in rivers

Answer

Answer: (c)

10. Species very near to extinction if conservation measures are promptly not take up are
(a) Rare species
(b) threatened species
(c) endangered species
(d) vulenrable species

Answer

Answer: (c)

300+ TOP MCQs on Amoebiasis and Answers

MCQs on Amoebiasis :

1. Amoebiasis causes
(a) Headache and cold
(b) Dysentry
(c) Fever
(d) Severe cold

Answer

Answer: (b)

2. Amoebiasis is caused by
(a) Toxoplasma gondii
(b) Entamoeba histolytica
(c) Ascaris lumbricoides
(d) None of these

Answer

Answer: (b)

3. Entamoeba histolytica can be cultured in
(a) Diamond’s medium
(b) CLED medium
(c) NNN medium
(d) MacConkey agar

Answer

Answer: (a)

4. Presence of ingested RBCs is a characteristic feature of
(a) Entamoeba histolytica
(b) Dientamoeba fragilis
(c) Entamoeba coli
(d) Iodamoeba butcheli

Answer

Answer: (a)

5. The most common site for amoebiasis is:
(a) Cecum
(b) Sigmoid colon
(c) Transverse colon
(d) Hepatic flexure

Answer

Answer: (a)

6. Amoebiasis is transmitted by
(a) Direct contact with dirty hands
(b) Sexual contact
(c) Faecal contamination of drinking water and food
(d) All of these

Answer

Answer: (d)

7. Differentiation between pathogenic and non-pathogenic strains can be done by
(a) Phagocytic activity
(b) Use of genetic markers
(c) Zymodeme analysis
(d) All of these

Answer

Answer: (d)

8. In tissues, amoebiasis is treated with
(a) Tinidazole
(b) Nitazoxanide
(c) Metronidazole
(d) Any of these

Answer

Answer: (d)

9. The karyosome of Entamoeba histolytica is
(a) liver
(b) progressive
(c) central
(d) even

Answer

Answer: (c)

10. Entamoeba histolytica cysts have _________ nuclei
(a) 1-4
(b) 5
(c) 9
(d) 6-8

Answer

Answer: (a)

300+ TOP MCQs on Plant Hormones and Answers

MCQs on Plant Hormones :

1. Indole-3-acetic acid is the most common naturally occurring plant hormone of _______ class
(a) Gibberellin
(b) Auxin
(c) Ethylene
(d) Cytokinin

Answer

Answer: (b)

2. This hormone is not a growth inhibitor
(a) Dormin
(b) Abscisic acid
(c) Ethylene
(d) IAA

Answer

Answer: (d)

3. ___________ is a gaseous plant hormone
(a) IBA
(b) Ethylene
(c) Abscisic acid
(d) NAA

Answer

Answer: (b)

4. A widely used rooting hormone is
(a) 2,4, -D
(b) NAA
(c) 2,4,5 – T
(d) Cytokinin

Answer

Answer: (b)

5. The leaf defoliator utilized in the Vietnam war by the USA known as “Agent Orange” was
(a) 2,4, -D and 2,4,5 – T
(b) Ethylene
(c) 2,4, -D and NAA
(d) 2,4,5 – T, ethylene and NAA

Answer

Answer: (a)

6. Transport of auxin is
(a) non-polar
(b) symplast
(c) apoplast
(d) polar

Answer

Answer: (d)

7. Formation of the nodule is induced by
(a) IAA
(b) NAA
(c) IBA
(d) Both (a) and (c)

Answer

Answer: (a)

8. This is the precursor of Indole-3-acetic acid
(a) Methionine
(b) Tryptophan
(c) Glycine
(d) Isopentynyl pyrophosphate

Answer

Answer: (b)

9. This bioassay is used to detect the presence of auxin
(a) Only tobacco pith culture
(b) Tobacco pith culture and Avena curvature test
(c) Tobacco pith culture and Split pea stem curvature test
(d) Split pea stem curvature test and Avena curvature test

Answer

Answer: (d)

10. Which of these is not a function of auxin?
(a) inducing callus formation
(b) inducing dormancy
(c) enhancing cell division
(d) maintaining apical dominance

Answer

Answer: (b)

300+ TOP MCQs on Peroxisomes and Answers

MCQs on Peroxisomes :

1. These activities are characteristics of peroxisomes
I. Catalase activity
II. Possess a glyoxylate cycle
III. Degradation of very long chain fatty acids
IV. Produce dihydrogen
(a) I and II
(b) I and III
(c) III and IV
(d) II and IV

Answer

Answer: (b)

2. Pick the odd one out in context of their surrounding membrane systems
(a) Mitochondria
(b) Chloroplasts
(c) Endoplasmic reticulum
(d) Nucleus

Answer

Answer: (c)

3. Pick the odd one out
(a) Glycosomes
(b) Mitochondria
(c) Hydrogenosomes
(d) Mitosomes

Answer

Answer: (a)

4. This organelle is involved in lipid metabolism
(a) RER
(b) SER
(c) Golgi apparatus
(d) Peroxisomes

Answer

Answer: (b)

5. The organelle helping in penetrating of sperm into egg during fertilization is
(a) peroxisome
(b) nucleus
(c) lysosome
(d) mitochondrion

Answer

Answer: (c)

6. Inside the cell, H₂O₂ clearance is brought about by
(a) Peroxisome with enzyme amino oxidase
(b) Glyoxysome with enzyme catalase
(c) Peroxisome with enzyme catalase
(d) Glyoxysome with enzyme isocitrate lyase

Answer

Answer: (c)

7. Organelle – Glyoxysomes is involved in
(a) conversion of fatty acids to lipids
(b) conversion of amino acids to carbohydrates
(c) conversion of fatty acids to carbohydrates
(d) conversion of amino acids to proteins

Answer

Answer: (c)

8. This forms the crystalline core inside peroxisome
(a) condensed ammonium chloride
(b) salt crystals
(c) highly condensed oxidative enzymes
(d) collection of phospholipids

Answer

Answer: (c)

9. The name of the group of proteins in the peroxisomal membrane is
(a) Peroxins
(b) Transporters
(c) Translocation proteins
(d) Peroxisomal membrane proteins

Answer

Answer: (a)

10. This enzyme embedded in the peroxisomal membrane is responsible to activate fatty acids before undergoing beta-oxidation.
(a) Fatty acid dehydrogenase
(b) 3-ketothiolase
(c) Acyl- CoA oxidase
(d) Acyl – CoA synthase

Answer

Answer: (d)