Cell Cycle & Cell Division NCERT Level (NEET/AIIMS Online Practice Exam)

All organism start their life from
1. Single cell
2. Two cell
3. Multiple cells
4. Ten cells
Which of the following are the characteristic of all living cells?
1. Growth
2. Reproduction
3. Cell division
4. All of these
During cell division which of the following process also takes place
1. DNA replication
2. Cell growth
3. Both DNA replication and Cell growth
4. None of these
Cell division, DNA replication and cell growth processes have to take place in a coordinated way to ensure:-
1. Correct division
2. Formation of progeny cells containing intact genomes
3. Both Correct division and Formation of progeny cells containing intact genomes
4. None of these
Which of the following event is termed cell cycle?
1. Cell duplicates its genome
2. Synthesizes the other constituents of the cell
3. Eventually divides into two daughter cells
4. All of these
Cell growth in terms of cytoplasmic increase is a ……….. process?
1. Continuous
2. Discontinuous
3. Takes place only initially
4. None of these
DNA synthesis occurs during ………….specific stage in the cell cycle :-
1. One
2. Two
3. Three
4. Four
Replicated chromosomes distribution to daughter nuclei is under:-
1. Hormonal control
2. Genetic control
3. Neural control
4. None of these
Human cells in culture divide once in approximately :-
1. 24 min
2. 24 hours
3. 24 Days
4. None of these
Cell cycle duration remains same in :-
1. Organism to organism
2. Cell type to cell type
3. Both Organism to organism and Cell type to cell type
4. None of these
Duration of cell cycle in Yeast is:-
1. 9 Min
2. 9 hours
3. 90 Min
4. None of these
Except interphase the other basic phase of cell cycle is :-
1. G1
2. S phase
3. M phase
4. G2 phase
Interphase represents a phase between two successive …….. phases ?
1. G1
2. G2
3. M
4. S
In a cell cycle of Human Cell, cell division M- phase and interphase duration percentage are:-
1. 95, 5
2. 5, 95
3. 85, 15
4. 15, 85
In a cell cycle of Human Cell, cell division last about in ………. min :-
1. 120
2. 60
3. 600
4. None of these
Which of the following is the correct sequence of :-
1. Karyokinesis, Cytokinesis, Nuclear division
2. Cytokinesis, Karyokinesis, Nuclear division
3. Nuclear division, Cytokinesis, Karyokinesis
4. Nuclear division, Karyokinesis, Cytokinesis
During which of the following phases cell prepares to divide by undergoing both cell growth and DNA replication:-
1. Resting phase
2. Interphase
3. M phase
4. Both Resting phase and Interphase
Which of the following phase does not come under interphase?
1. Gap 1
2. Synthesis
3. Gap 2
4. Mitosis
Which of the following is not true about G1phase?
1. It is the interval between Mitosis and initiation of DNA replication
2. During this phase cell is metabolically active and continuously grows
3. Replication of DNA takes place
4. All are true
Which of the following is true about S phase?
1. DNA synthesis or replication takes place
2. Amount of DNA per cell becomes half
3. Even after S phase chromosome number becomes double
4. All are true
Which of the following statements are true?
1. In animal cells during S phase DNA replication begins in nucleus and centriole duplicates in Cytoplasm
2. During G1 phase proteins are synthesised and cell continues to grow
3. All cells in adult animals appear to exhibit cell division
4. All are true
Many cells divide only occasionally to ensure:-
1. Replacement of cell lost during injury
2. Replacement of cell lost during cell death
3. Both Replacement of cell lost during injury and Replacement of cell lost during cell death
4. None of these
Cells that do not divide further exit ………..phase to enter an inactive phase called …………
:-
1. G2 phase, synthesis stage
2. G1 phase, quiescent stage
3. S phase, quiescent stage
4. None of these
Cell in G0 stage is :
1. Metabolically active
2. Metabolically inactive
3. No longer proliferate unless required by organism
4. Both Metabolically active and No longer proliferate unless required by organism
Equational division is also known as :-
1. Mitotic division
2. Meiotic division
3. Both Mitotic division and Meiotic division
4. None of these
Mitosis cell division is seen in :-
1. Animal diploid somatic cells
2. Plant diploid cells
3. Plant haploid cells
4. All of these
Which of the following are the stages of Mitosis?
1. Prophase and Metaphase
2. Anaphase
3. Telophase
4. All of these
Which of the following are characteristic event of Prophase?
1. Chromosomal material condenses to form compact mitotic chromosomes
2. Chromosomes are seen to be composed of two chromatids attached at centromere
3. Initiation of assembly of Mitotic Spindle with the help of Microtubules
4. All of these
Which of the following is the first stage of Mitosis?:-
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase
Prophase follows which of the following phases of interphase?
1. G1
2. G2
3. G0
4. S
Cells at the end of prophase, when viewed under microscope do not show :-
1. Golgi complex and Endoplasmic reticulum
2. Nucleolus
3. Nuclear envelop
4. All of these
Complete disintegration of nuclear envelop marks the start of ………… phase of Mitosis:-
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase
Which of the following statement are true?
1. Metaphase chromosome is made up of two sister chromatids held together by centromere
2. Small disc shaped structures at the surface of centromere are called kinetochore
3. Kinetochore serves as site of attachment of spindle fibre
4. All are true
During which of the following phase chromosome lie at equator with one chromatid connected by kinetochore to spindle fibre of one pole and sister chromatid connected by kinetochore of spindle fibre of opposite pole :-
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase
Which of the following statements are true regarding Anaphase?
1. Each chromosome arranged at Metaphase plate split simultaneously
2. Two daughter chromatids begin to migrate towards two opposite poles
3. Centromere of each chromosome is towards the pole with the arms trailing behind
4. All are true
The following diagrams represent which phases of Mitosis
1. Prophase, Anaphase
2. Metaphase, Anaphase
3. Prophase, Metaphase
4. Metaphase, Telophase
Onion root tip cell have 14 chromosomes in each cell. During mitosis how many chromosomes will be in G1, S & after M phase cell will have:-
1. 14, 14, 14
2. 14, 28, 14
3. 14, 14, 28
4. 28, 28, 14
Onion root tip cell have 2C DNA content after M phase of mitosis in each cell. How much DNA content will be in G1, G2, S phase cell will have:-
1. 4C, 2C, 4C
2. 2C, 4C, 4C
3. 4C, 4C, 2C
4. None of these
The following diagrams represent which phases of Mitosis:-
1. Prophase, Anaphase
2. Metaphase, Anaphase
3. Prophase, Metaphase
4. Anaphase, Telophase
Which of the following are the key events of telophase?
1. Chromosomes cluster at opposite spindle poles
2. Nuclear envelop assembles around chromosomes clusters
3. Nucleolus, Golgi complex and ER reforms
4. All of these
When two genes are situated close to each other in a chromosome :-
1. The percentage of crossing over between them is very high
2. Hardly any crossover is deteched
3. No crossing over can take place between them
4. Only double cross overs can take place between them
Read the following statements :-
(i) Acute chest pain appears
(ii) The heart stops beating
(iii) No enough oxygen is reaching the heart muscle.
(iv) congestion of the lungs is one of the main symptoms of this disease.
(v) It is more common among the middle aged and elderly.
(vi) It occurs due to conditions that affect the blood flow.
How many statements correct about Angina.
1. Two
2. Three
3. Four
4. Five
In which of the following inheritance phenotype of F1–hybrid does not resemble with either of it's parents :-
1. Incomplete dominance
2. Codominace
3. Polygenic inheritance
4. All of above
Read the following statements :-
(I) Dialysis fluid contain all the constituents as in plasma except ----(a)-----
(II) A chordate animal having flame cells as excretory structure is ------(b)-------
(III) Reabsorption of water from distal parts of the tubule is facilitated by hormone -----(c)---In above statements (a), (b), (c) are :-
1. Glucose, Planaria, ADH
2. Nitrogenous wastes, Planaria, ADH
3. Nitrogenous wastes, Amphioxus, ADH
4. NaCl, Rotifers, Aldosterone
How many different type of gametes are produced by M/M, g/g, B/b, C/c, D/d genotype :-
1. 2
2. 4
3. 8
4. 16
The epidermis of mammals is characterized by the absence of:-
1. Mucous glands
2. Femoral glands
3. Poison gland
4. All of these
The end product, whose addition will check the synthesis of biosynthetic enzyme is known as :-
1. Aporepressor
2. Co-repressor
3. Inducer
4. Suppressor
In humans at the end of the first meiotic division, the male germ cells differentiate into the :-
1. new spermatogonia
2. spermatids
3. secondary spermatocytes
4. primary spermatocytes
The expression of genes, for the production of milk in only female is :-
1. Sex linked trait
2. Y-linked trait
3. Sex limited trait
4. Sex influenced trait
Emergency contraceptives are effective if used within :-
1. 72 hrs of coitus
2. 72 hrs of ovulation
3. 72 hrs of menstruation
4. 72 hrs of implantation
Which of the following match is/are correct ?
(A) PCR Technique–Taq & Vent polymerase
(B) Tetra & Andi–Cloned monkey
(C) SCID disorder–ADA Enzyme
(D) First transgenic animal–Mouse
1. All are correct
2. Only C is correct
3. Only A & D are correct
4. Only B is correct
Mature graafian follicle is generally present in the ovary of a healthy human female around stet:
1. 5-8 day of menstrual cycle
2. 11-17 day of menstrual cycle
3. 18-23 day of menstrual cycle
4. 24-28 day of menstrual cycle
The given pedigree chart shows the inheritance of which of the following Mendelian disorder ?
1. Autosomal dominant trait - Myotonic dystrophy.
2. X-linked dominant trait - Pseudoricketes
3. Autosomal recessive trait - Sickle cell anaemia
4. X-linked recessive trait - Haemophilia.
Match the following and choose the correct options :
(A) Trophoblast (i) Embeding of blastocyst in the endometrium
(B) Cleavage (ii) Group of cells that would differentiate as embryo
(C) Inner cells mass (iii) outer layer ofblastocyst attached to the endometrium
(D) Implantation (iv) mitotic division of zygote
1. A-ii, B-i, C-iii, D-iv
2. A-iii, B-iv, C-ii, D-i
3. A-iii, B-i, C-ii, D-iv
4. A-ii, B-iv, C-iii,, D-i
Allelic sequence variations, where more than one varient (allele) at a locus in a human population with a frequency greater than 0.01 is referred to as:-
1. Incomplete dominance
2. EST
3. SNP
4. DNA polymorphism
Catalytic converters are fitted into automobiles to reduce emission of harmful gases. Catalytic converters change unburnt hydrocarbons into:-
1. carbon dioxide and water
2. carbon mono oxide
3. methane
4. carbon dioxide and methane
The restriction endonuclease enzyme binds to the DNA & cut -
1. any one strand of the double helix
2. each of the two strands at specific points in their base - sugar bonds.
3. each of the two strands at specific points in their base - phosphate bonds.
4. each of the two strands at specific points in their sugar - phosphate, back bones.
Match correctly the following and choose the correct option :
(i) Environment Protection Act A. 1974
(ii) Air Prevention & Control of B. 987 pollution Act
(iii) Water Act C. 1986
(iv) Amendment of Air Act to D. 1981include noise
The correct matches is ;
1. i-C, ii-D, iii-A, iv-B
2. i-A, ii-C, iii-B, iv-D
3. i-D, ii-A, iii-B, iv-C
4. i-C, ii-D, iii-B, iv-A
Read the following statement having two blanks (A & B) :-
"A drug used for------(A)---- patients is obtained from a species of the rganism -----(B)----.
The one correct option for the two blanks is - Blank - A Blank - B
1. Heart , Streptococus
2. Heart , Monascus
3. Organ - transplant, Trichoderma
4. Swine flu , Monascus
Choose the incorrect statement :-
1. The Montreal protocol is associated with the control of emission of ozone depleting substances
2. Methane and carbon dioxide are green house gases
3. Dobson units are used to measure oxygen content
4. Use of incinerators is crucial to disposal of hospital wastes
Consider the following four statements (a-d) and select the option which includes all the correct ones only.
(a) Cross-breeding allows the desirable qualities of two different species to be combined.
(b) Wax is used in the preparation of cosmetics and polishes of various kinds.
(c) Pisciculture is catching processing and selling of fishes
(d) Inbreeding helps in accumulation of superior genes.
Options :
1. Statement (b), (c) and (d)
2. Statement (a) and (d)
3. Statement (a) and (c)
4. Statement (a), (c) and (d)
Amensalism is an association between two species where :
1. one species is harmed and other is benefitted
2. one species is harmed and other is unaffected
3. one species is benefitted and other is unaffected
4. both the species are harmed
How many enzymes in the list given below are protein digesting enzyme found in pancreatic juice?

Lactase, Trypsin, Pepsin, Chymotrypsin, Aminopeptidase, Rennin, Carboxypeptidase, Nuclease, Maltase.
1. Six
2. Three
3. Four
4. Five
Formation of tropical forests needs mean annual temperature and mean annual precipitation as :
1. 18-25ºC and 150-400 cm
2. 5-15ºC and 50-100 cm
3. 30-50ºC and 100-150cm
4. 5-15ºC and 100-200 cm
Read the following five statement and answer as asked next to them ?
(a) Peptic cells secrete the proenzyme pepsinogen
(b) Enterokinase is a digestive enzyme of pancreatic juice
(c) Haustra are found in large intenstine
(d) For its activity carboxypeptidase requires zinc
(e) Spicy food may cause indigetion
How many of the above statements are incorrect ?
1. Four
2. One
3. Two
4. Three
According to Allen's Rule, the mammals from colder climates have :
1. shorter ears and longer limbs
2. longer ears and shorter limbs
3. longer ears and longer limbs
4. shorter ears and shorter limbs
Read the following four statements (a-d) :-
(a) A single out cross often helps to overcome inbreeding depression
(b) Artificial insemination helps to overcome several problems of normal matings
(c) Bee keeping is easy and do not require any specialised knowledge
(d) Catla, rohu and common carp are fresh water fish.
How many of the above statements are :-correct?
1. One
2. Two
3. Three
4. Four
Ecological niche is :-
1. the surface area of the ocean
2. an ecologically adapted zone
3. the physical position and functional role of a species within the community
4. formed of all plants and animals living at the bottom of a lake
When the resources are limited, which are the phases exhibited by an organism during growth?
1. Lag, Log, exponential, deacceleration,asymptomatic
2. Lag, log, asymptomatic, deacceleration,exponential
3. Lag, log, deacceleration, exponential,asymptomatic
4. None of these
Function of stem is :-
1. To bear leaves, flowers and branches.
2. Conduction of water and minerals to leaves.
3. Conduction of food (photosynthates)
4. All of the above
The density of a population in a given habitat during a given period, fluctuates due to changes in?
1. Immgration, Natility
2. Mortality
3. Emigration
4. All the above
Conjoint, bicollateral, open vascular bundles arranged in two rings are characteristic of :-
1. Cucurbita
2. Cocos
3. Asparagus
4. Yucca
Type of ovule in Pea :-
1. Hemianatropous
2. Amphitropous
3. Anatropous
4. Campylotropous
A T.S. of monocot stem can be distinguished from that of a dicot stem by observing the :-
1. Vascular bundles, which are scattered in monocot stem.
2. Sunken stomata
3. Radial vascular bundles
4. Concentric vascular bundles
Formation of embryo from egg cell without fertilization ?
1. Parthenogenesis
2. Parthenocarpy
3. Apospory
4. Apomixis
Which modification is reported in Asparagus and Ruscus?
1. Cladodes
2. Phyllodes
3. Leaf spines
4. Phylloclades
Filiform apparatus is present in :
1. Suspensor cell
2. Egg cell
3. Synergids
4. Zygote
A flower having many free carpels will develop into :-
1. Schizocarpic fruit
2. Sorosis
3. Simple fruit
4. Etaerio
1. A-iii, B-iv, C-v, D-i, E-ii
2. A-iv, B-iii, C-ii, D-v, E-i
3. A-iii, B-iv, C-v, D-ii, E-i
4. A-iii, B-iv, C-ii, D-v, E-i
Which of the following character is shown by Australian Acacia and Parkinsonia ?
1. Developmental heterophylly.
2. Climb up to a support with the help of spines
3. Leaf part petiole gets modified into phyllode.
4. Vegetative propagation occurs by bulbils
Metagenesis is present in :-
1. Corals
2. Anemones
3. Hydra
4. None
The plant hormone which is basic in nature:-
1. Auxin
2. Gibberellins
3. Cytokinin
4. Abscisic acid
Select the incorrect statement among the following :-
1. Flat worms are mostly endoparasites
2. Ctenophora are exclusively marine
3. Arthropods are mostly oviparous with direct or indirect development
4. Many cartilagenous fishes are oviparous
An example of non-competitive inhibition is:-
1. The inhibition of succinic dehydrogenase by malonate
2. Cyanide action on cytochrome oxidase
3. Sulpha drug on folic acid synthesizing bacteria
4. None of above
Worm like marine animals are :-
1. Protochordates
2. Ctenophores
3. Cephalochordata
4. Hemichordata
Lencelet is :-
1. Hemichordata
2. Vertebrata
3. Urochordata
4. None
Identify the product marked (A) and (B) in the following pathway :-
1. (A) 2 phospho glycerate; (B) Acetyl CoA
2. (A) PEP; (B) Ethyl alcohol
3. (A) PEP (B) Lactic acid
4. (A) PEP (B) acetyl CoA
OEC is located in/on :-
1. Outer surface of grana membrane
2. Lumen of stroma lamellae
3. Inner surface of thylakoid membrane
4. Stroma
Transport proteins of are control points where a plant adjust the quantity and types of solutes that reach the xylem :-
1. Pericycle
2. Hypodermis
3. Endodermis
4. Pith
(a) Essential elements are components of energy related compounds
(b) Essential elements are components of structural element of cells
(c) Mn²⁺ is an activator of alcohol dehydrogenase
1. All are correct
2. Only (a) is incorrect
3. Only (b) is incorrect
4. Only (c) is incorrect
Given below is a diagrammatic cross section of a single loop of human cochlea

Which one of the following options correctly represents the names of three different parts?
1. A : Perilymph, B : Tectorial membrane, C : Endolymph
2. B : Tectorial membrane, C : Perilymph, D : Secretory cells
3. C : Endolymph, D : Sensory hair cells, A : Serum
4. D : Sensory hair cells, A : Endolymph, B : Tectorial membrane
What is vital capacity of our lungs?
1. Total lungs capacity minus residual volume
2. Inspiratory reserve volume plus tidal volume
3. Total lungs capacity minus expiratory reserve volume
4. Inspiratory reserve volume plus expiratory reserve volume
Which one of the following items gives its correct total number?
1. Cervical vertebrae in humans – 8
2. Floating ribs in humans – 4
3. Amino acids found in proteins – 16
4. Types of diabetes – 3
What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?
1. Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin
2. Gastric juice will be deficient in chymosin
3. Gastric juice will be deficient in pepsinogen
4. In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin.
During the propagation of a nerve impulse, the action potential results from the movement of
1. Na+ ions from extracellular fluid to intracellular fluid
2. Ka+ ions from extracellular fluid to intracellular fluid
3. Na+ ions from intracellular fluid to extracellular fluid
4. Ka+ ions from intracellular fluid to extracellular fluid
The blood calcium level is lowered by the deficiency of
1. Calcitonin
2. Parathormone
3. Thyroxine
4. Both Calcitonin and Parathormone
The most active phagocytic white blood cells are
1. Neutrophils and monocytes
2. Neutrophils and eosinophils
3. Lymphocytes and macrophages
4. Eosinophils and lymphocytes
Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to
1. Setae
2. Coelomic fluid
3. Blood
4. Gut peristalsis
In humans, blood passes from the post caval to the diastolic right atrium of heart due to
1. Pressure difference between the post caval and atrium
2. Pressure difference between the post caval and atrium
3. Suction pull
4. Stimulation of the sino auricular node
Which extraembryonic membrane in humans prevents desiccation of the embryo inside the utrerus?
1. Amnion
2. Chorion
3. Allantois
4. Yolk sac

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Cell Cycle & Cell Division NCERT Level (NEET/AIIMS Online Practice Exam)

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