300+ REAL TIME NEET Biology Objective Questions & Answers 2023

300+ TOP MCQs on Tissue Culture 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 Tissue Culture Multiple Choice Questions

MCQs on Tissue Culture :

1. In plant tissue culture medium, Agar is a gelling agent This about agar is incorrect.
(a) remains stable at incubation temperature
(b) does not react with media constituents
(c) does not use in micropropagation work
(d) not digested by plant enzymes

Answer

Answer: (c)

2. In tissue culture system, this is the main effect of cytokines
(a) shoot elongation
(b) adventitious root formation
(c) induction of somatic embryos
(d) adventitious shoot formation

Answer

Answer: (d)

3. This is not a basic component of culture media for plant cultivation
(a) amino acids
(b) sucrose/sugar
(c) complex mixture of salts
(d) serum albumin

Answer

Answer: (d)

4. This plant propagation method uses girdling
(a) cuttings
(b) grafting
(c) layering
(d) both (a) and (b)

Answer

Answer: (c)

5. The ability of single cells to divide and produce all differentiated cells in the entity
(a) Totipotency
(b) Multipotent
(c) Pluripotent
(d) Unipotent

Answer

Answer: (a)

6. This is the first transgenic crop
(a) flax
(b) tobacco
(c) plastic
(d) cotton

Answer

Answer: (b)

7. This is not a feature of plant cells
(a) consists of plastids
(b) cell wall outside cell membrane
(c) presence of centrioles
(d) cell-cell communication through plasmodesmata

Answer

Answer: (c)

8. This is a superbug
(a) virus
(b) bacteria
(c) transgenic plant
(d) worms

Answer

Answer: (b)

9. This is cellular totipotency property
(a) plants
(b) animals
(c) virus
(d) none of the above

Answer

Answer: (a)

10. Growth of plant tissues in artificial media is
(a) cell hybridization
(b) plant tissue culture
(c) transgenesis
(d) gene expression

Answer

Answer: (b)

300+ TOP MCQs on Famine and Answers

MCQs on Famine :

1. The condition wherein there is no enough food in a region to feed people is known as
(a) drought
(b) famine
(c) monsoon
(d) thunderstorm

Answer

Answer: (b)

2. The unequal distribution of food, droughts, increased population and flooding are as a result of
(a) malaria
(b) dengue fever
(c) famine
(d) typhoid

Answer

Answer: (c)

3. Self-starvation in purging type anorexia nervosa/binge-eating is linked with
(a) eating only certain food types
(b) not being bothered about weight gain
(c) not eating to help control weight gain
(d) regularly engaging in purging activities to help control weight gain

Answer

Answer: (d)

4. When a person goes hungry for a long period of time they can:
(a) Be more prone to disease
(b) be stunted in height
(c) Affects brain functioning
(d) All of these

Answer

Answer: (d)

5. Vitamin A deficiency can affect upto these many children in the middle and low income areas
(a) 1/2
(b) 1/3
(c) 1/4
(d) 1/8

Answer

Answer: (b)

6. The ‘WFP’ stands for
(a) World Food Program
(b) Wild Fire Protection
(c) Wild Fauna Protection
(d) Wild Food Program

Answer

Answer: (a)

7. Individuals with bulimia have a perceived lack of control on their eating pattern often reporting to which of these?
(a) Low self-esteem
(b) High levels of self-disgust
(c) High levels of depression
(d) All of these

Answer

Answer: (d)

8. The lesions to which part of the brain in animal research have been shown to cause appetite loss leading to self-starvation syndrome
(a) Amygdala
(b) Cerebellum
(c) Basal ganglia
(d) lateral hypothalamus

Answer

Answer: (d)

9. The Body Mass Index(BMI) measure depicts that one can be considered as overweight with a BMI of:
(a) 45-59.9
(b) 25-29.9
(c) 20.9-30.9
(d) 55-69.9

Answer

Answer: (b)

10. In the event of starvation, after consumption of glycogen and fats, the next nutrient that is to be consumed is
(a) starch
(b) cellulose
(c) proteins
(d) adenosine triphosphate

Answer

Answer: (c)

300+ TOP MCQs on Mitosis and Answers

MCQs on Mitosis :

1. DNA synthesis takes place during_________ phase
(a) M phase
(b) G₂ phase
(c) G₁ phase
(d) S phase

Answer

Answer: (d)

2. Where does spindle fibres attach to during metaphase?
(a) kinetochore of the chromosome
(b) kinetosome of the chromosome
(c) centromere of the chromosome
(d) telomere of the chromosome

Answer

Answer: (a)

3. Nucleolus and endoplasmic reticulum start disappearing at
(a) late prophase
(b) early prophase
(c) late metaphase
(d) early metaphase

Answer

Answer: (b)

4. Early prophase of a diploid cell has_____ sets of chromosomes; telophase of a diploid cell has ____ sets of chromosomes
(a) 1;2
(b) 2;1
(c) 2;2
(d) 1;1

Answer

Answer: (c)

5. A protein complex, that links sister chromatids, is
(a) actin
(b) cohesin
(c) myosin
(d) actomyosin

Answer

Answer: (b)

6. Formation of cell plate starts at
(a) G₂ phase
(b) prophase
(c) telophase
(d) S phase

Answer

Answer: (c)

7. If you want to count the number of chromosomes, which is the best stage to do so?
(a) telophase
(b) interphase
(c) prophase
(d) metaphase

Answer

Answer: (d)

8. Mitotic anaphase and metaphase have
(a) chromosomes are halved at anaphase
(b) chromatids are halved at anaphase
(c) the same number of chromosomes and chromatids
(d) both chromosomes and chromatids are halved at anaphase

Answer

Answer: (a)

9. Colchicine arrests cell division at
(a) interphase
(b) prophase
(c) metaphase
(d) anaphase

Answer

Answer: (c)

10. Cell division occurring during cleavage
(a) meiosis
(b) mitosis
(c) amitosis
(d) closed mitosis

Answer

Answer: (d)

300+ TOP MCQs on Chromosome Structure and Answers

MCQs on Chromosome Structure :

1. The least level of chromosome organization is
(a) 30nm fibre
(b) solenoid
(c) nucleosome
(d) none of the above

Answer

Answer: (c)

2. This has the largest number of chromosomes
(a) Pisum sativum
(b) Giant redwood tree
(c) Haplopappus gracilis
(d) Ophioglossum reticulatum

Answer

Answer: (d)

3. A chromosome with a very short arm and a very long arm is referred to as
(a) Metacentric
(b) telocentric
(c) Acrocentric
(d) Sub-metacentric

Answer

Answer: (c)

4. A chromosome is the thickest during
(a) anaphase
(b) prophase
(c) interphase
(d) metaphase

Answer

Answer: (d)

5. The diagrammatic representation of karyotype (morphological representation of chromosomes) of a species is known as
(a) Cladogram
(b) Ecogram
(c) Chromogram
(d) Idiogram

Answer

Answer: (d)

6. If Bb is a gene pair of an individual then the alleles for this gene pair are
(a) A and B
(b) a and A
(c) a and b
(d) b and B

Answer

Answer: (d)

7. Euchromatin
(a) stains lightly
(b) is partially condensed
(c) genetically active chromatin with genes
(d) all of the above

Answer

Answer: (d)

8. The point at which polytene chromosomes appear to be attached together is known as
(a) centriole
(b) centromere
(c) chromomere
(d) chromocenter

Answer

Answer: (d)

9. In which typical stage are Lampbrush chromosomes observed?
(a) meiotic prophase
(b) mitotic metaphase
(c) mitotic prophase
(d) mitotic anaphase

Answer

Answer: (a)

10. Each of the chromosome at the anaphase stage of a bone marrow cell in our body has
(a) one chromatid
(b) two chromatids
(c) several chromatids
(d) no chromatids

Answer

Answer: (a)

300+ TOP MCQs on Life Processes and Answers

MCQs on Life Processes :

1. Entities exhibiting properties of both non-living and living are:
(a) diatoms
(b) lichens
(c) bacteria
(d) viruses

Answer

Answer: (d)

2. This has a smaller intestine
(a) carnivore
(b) herbivore
(c) both (a) and (b)
(d) none of the above

Answer

Answer: (a)

3. Which of these substances is transported by the blood plasma?
(a) Carbon dioxide
(b) Nitrogenous waste
(c) Food
(d) All of the above

Answer

Answer: (d)

4. Here, the maximum exchange of material between blood and surrounding cells takes place
(a) Veins
(b) Heart
(c) Capillaries
(d) Arteries

Answer

Answer: (c)

5. In photosynthesis, the chlorophyll is used for
(a) No function
(b) reduction of carbon dioxide
(c) breaking down the water molecule
(d) absorbing light

Answer

Answer: (d)

6. The enzymes found in intestinal juice finally convert
(a) fats into fatty acids and glycerol
(b) proteins to amino acids
(c) complex carbohydrates into glucose
(d) all of these

Answer

Answer: (d)

7. The respiratory pigment in human beings is
(a) insulin
(b) enzymes
(c) haemoglobin
(d) none of these

Answer

Answer: (c)

8. This structure guards the opening of the hepatopancreatic duct into the duodenum
(a) Pyloric sphincter
(b) Sphincter of Oddi
(c) Semilunar valve
(d) Ileocaecal valve

Answer

Answer: (b)

9. Pick the correct one
(a) Serum = Blood + Fibrinogen
(b) Lymph = Plasma + RBC + WBC
(c) Plasma = Blood – Lymphocytes
(d) Blood = Plasma + RBC + WBC

Answer

Answer: (d)

10. Reduction of blood pH will
(a) reduces the rate of heartbeat
(b) reduces the blood supply to the brain
(c) releases bicarbonate ions by the liver
(d) decrease the affinity of haemoglobin with oxygen

Answer

Answer: (d)

300+ TOP MCQs on Meiosis and Answers

MCQs on Meiosis :

1. The evolutionary advantage of meiosis can be best explained by which of these statements?
(a) Meiosis alternates with mitosis from one to the next generation
(b) Meiosis is essential for sexual reproduction
(c) Passing of the same genetic system from one to next generation
(d) Genetic recombination is possible from one to next generation

Answer

Answer: (d)

2. One of these events does not take place during meiosis
(a) One successive division without any DNA replication
(b) Chiasmata formation and crossing over
(c) Segregation of homologous chromosomes
(d) Separation of sister chromatids

Answer

Answer: (a)

3. The meiotic division takes place in
(a) Meristematic cells
(b) Conductive cells
(c) Reproductive cells
(d) Vegetative cells

Answer

Answer: (c)

4. Name the event wherein the paternal and maternal chromosomes change their material with each other in cell division
(a) Crossing over
(b) Synapsis
(c) Dyad forming
(d) Bivalent forming

Answer

Answer: (a)

5. The reason for daughter cells to differ from parent cells and also each other in meiosis is;
(a) Segregation and crossing over
(b) Segregation and independent assortment
(c) Segregation, crossing over and independent assortment
(d) Independent assortment and crossing over

Answer

Answer: (c)

6. Continuous variations are due to
(a) Mutation
(b) Crossing over
(c) Polyploidy
(d) Chromosomal aberrations

Answer

Answer: (b)

7. Synapsis takes place between
(a) Spindle fibre and centromere
(b) mRNA and ribosomes
(c) a female and a male gamete
(d) Two homologous chromosomes

Answer

Answer: (d)

8. Mendelian factor (Aa) is segregated during
(a) Anaphase I
(b) Anaphase II
(c) Diplotene
(d) Zygotene/Pachytene

Answer

Answer: (a)

9. The stage of prophase I wherein crossing over occurs is
(a) Zygotene
(b) Diplotene
(c) Leptotene
(d) Pachytene

Answer

Answer: (d)

10. Meiosis I is reductional division and meiosis II is equational division because of
(a) Separation of chromatids
(b) Crossing over
(c) The disjunction of homologous chromosomes
(d) The pairing of homologous chromosomes

Answer

Answer: (a)