NEET Biology Model Test-3

Question No:1
What is the typical size of bacteria?

[A] 1-2 µm
[B] 2-3 µm
[C] 3-4 µm
[D] 0.1-1.0 µm



Question No:2
Nitrogenase requires how many molecules of ATP for each molecule of NH3 produced?

[A] 8
[B] 4
[C] 16
[D] 2



Question No:3
Adrenal cortex cab be histologically divide in to how many layers?

[A] 1
[B] 2
[C] 3
[D] 4



Question No:4
In which year, Ribosome was first observed by George Palade?

[A] 1926
[B] 1869
[C] 1953
[D] 1952



Question No:5
How many ATP are produced when 16H⁺ ion passed through F-unit of F₀— F₁ particle?

[A] 16
[B] 8
[C] 4
[D] 2



Question No:6
Ovary is one chambered but it become two chambered due to the formation of false septum in

[A] mustard
[B] dianthus
[C] merigold
[D] sunflower



Question No:7
Transfer of pollen grains from the anther to the stigma of same flower of the same plant is called

[A] xenogamy
[B] geitonogamy
[C] karyogamy
[D] autogamy



Question No:8
Which one of the following is used as vector for cloning genes into higher plants?

[A] Baculovirus
[B] Agrobacterium tumifaciens
[C] Rhizopus nigricans
[D] Retrovirus



Question No:9
The principal nitrogenous excretory compound in humans is synthesised

[A] in kidneys but eliminated mostly through liver
[B] in kidneys as well as eliminated by kidneys
[C] in liver and also eliminated by the same through bile
[D] in the liver, but eliminated mostly through kidneys



Question No:10
Algae have cell wall made up of

[A] cellulose, galactans and mannans
[B] hemicellulose, pectins and proteins
[C] pectins, cellulose and proteins
[D] cellulose, hemicellulose and pectins



Question No:11
Which one of the following would not lead to formation of clones?

[A] Double fertilization
[B] Apomixis
[C] Vegetative reproduction
[D] Tissue culture



Question No:12
A polygenic trait is controlled by 3 genes: A, B and C. In a cross AaBbCc x AaBbCc, the phenotypic ratio of the off springs was observed as 1:6:x:20:x:6: What is the possible value of x?

[A] 3
[B] 9
[C] 15
[D] 25



Question No:13
Mendel’s principle of segregation means that the gametes always receive

[A] one pair of alleles
[B] one quarter of the genes
[C] one of the paired alleles
[D] any pair of alleles



Question No:14
The arthropod exoskeleton is composed of

[A] Globulin
[B] Chitin
[C] several kinds of proteins
[D] single complex protein called arthropodin



Question No:15
Thymosin hormone is secreted by

[A] thyroid gland
[B] parathyroid gland
[C] thymus gland
[D] hypothalamus gland



Question No:16
Subunits of SOS ribosome are

[A] 40S
[B] 60S
[C] Both (a) and (b)
[D] None of these



Question No:17
Which one of the following does not belong to kingdom-Monera?

[A] Mycoplasma
[B] Archaebacteria
[C] Slime mould
[D] Eubacteria



Question No:18
One of these is associated with terminator codon?

[A] AGO
[B] UAA
[C] UUA
[D] AUG



Question No:19
Bowman’s glands are found in

[A] olfactory epithelium
[B] external auditory canal
[C] cortical nephrons only
[D] juxta medullary nephrons



Question No:20
The RNA primer is used in

[A] Translation
[B] Replication
[C] Conjugation
[D] Transformation



Question No:21
Which of following mineral-nutrients plays an important role in biological nitrogen fixation?

[A] Zinc
[B] Iron
[C] Molybdenum
[D] Magnesium



Question No:22
One advantage of cleistogamy is:

[A] It leads to greater genetic diversity
[B] Seed dispersal is more efficient and widespread
[C] Seed set is not dependent on pollinators
[D] Each visit of a pollinator results in transfer of hundreds of pollen grains



Question No:23
The final stable community in ecological succession is:

[A] Pioneers
[B] Sere
[C] Climax
[D] carnivores



Question No:24
Erythropoiesis starts in:

[A] Kidney
[B] Liver
[C] Spleen
[D] Red bone marrow



Question No:25
Which of the following is unique to mitosis and not a part of meiosis?

[A] Homologous chromosomes behave independently
[B] Chromatids are separated during anaphase
[C] Homologous chromosomes pair and form bivalents
[D] Homologous chromosomes crossover



Question No:26
The sequence of ear ossicles from outside to inside is:

[A] Malleus —>Incus —> Stapes
[B] Incus —> Stapes —> Malleus
[C] Stapes -> Incus —>Malleus
[D] Malleus -> Stapes —> Incus



Question No:27
Which is correct?

[A] Slime moulds are haploid
[B] Protozoan lack cell wall
[C] Dinoflagellates are immotile
[D] Pellicle is absent in Euglena



Question No:28
RAAS secrets which of the following hormone?

[A] Mineralo corticoids
[B] Gluco corticoids
[C] Both (a) and (b)
[D] None of these



Question No:29
Branch of biology dealing with study of organism in outer space is:

[A] Exobiology
[B] Ethology
[C] Euphenics
[D] Ethnology



Question No:30
Example of holocrine gland is

[A] Pancrease
[B] Mammary gland
[C] Salivary gland
[D] Sebaceous gland



Question No:31
How many metameric segments present in earthworm?

[A] 100-200
[B] 100-150
[C] 120-150
[D] 100-120



Question No:32
Penicillin was extensively used to treat American soldiers wounded in World War II. Fleming, Chain and Florey were awarded the Nobel Prize in which year?

[A] 1945
[B] 1935
[C] 1955
[D] 1940



Question No:33
How many genes are present in chromosomes X and chromosome Y, respectively?

[A] 2,968,213
[B] 2,896,231
[C] 2,869,312
[D] 2,968,231



Question No:34
How much filtrate is reabsorbed by renal tubules?

[A] 70-80
[B] 90
[C] 99
[D] 95



Question No:35
At which thoracic vertebra, trachea is divided into 1⁰ bronchi-

[A] 6th
[B] 5th
[C] 4th
[D] 7th



Question No:36
Which of the following are free living nitrogen fixer in soil

[A] Rhizobium
[B] Alnus
[C] Frankia
[D] Nostoc



Question No:37
The genotype of a plant showing the dominant phenotype can be determined by

[A] test cross
[B] dihybrid cross
[C] pedigree analysis
[D] back cross



Question No:38
Select incorrect matching

[A] GCA-Ala
[B] GUU-Val
[C] AAU-Asn
[D] UCC-Leu



Question No:39
Carrier ions like Na⁺ facilitate the absorption of substance like

[A] amino acids and glucose
[B] glucose and fatty acids
[C] fatty acids and glycerol
[D] fructose and Some amino acids



Question No:40
Some hyperthermophilic organisms that grow in highly acidic (pH 2) habitats belong to the two groups called

[A] eubacteria and archaea
[B] cyanobacteria and diatoms
[C] protists and mosses
[D] liverworts and yeasts



Question No:41
The variation/difference in the off springs of a species from their parents constitutes an important component of

[A] genetics
[B] speciation
[C] species fixation
[D] heredity



Question No:42
A transgenic rice (golden rice) has been developed for increased content of

[A] vitamin A
[B] vitamin Bf
[C] vitamin C
[D] vitamin D



Question No:43
Which of the following vitamins help in absorption of calcium ion from intestine

[A] Vitamin A
[B] Vitamin D
[C] Vitamin C
[D] Vitamin B



Question No:44
C-DNA is

[A] Copy DNA
[B] Conjugated DNA
[C] Chimeric DNA
[D] Complex DNA



Question No:45
Which of the following groups is absolutely essential functional component of the ecosystem?

[A] Producers
[B] Producers and herbivores
[C] Producers and detritivores
[D] Detritivores