NEET NCERT biology sample papers,botany,zoology model,mock tests

NEET Biology Model Test-6

NEET Biology Model Test-6

Question No:1
Rubisco stands for

[A] Ribulose bisphosphate carboxylase oxygenase
[B] Ribulose phosphate carboxylase oxygenase
[C] Ribulose phosphate carboxylic oxygenase
[D] None of the above

Question No:2
Agrose is a gel, which is used to separate

[A] carbohydrate
[B] fats
[C] Both (a) and (b)
[D] protein

Question No:3
Scala Naturae was written by

[A] Linnaeus
[B] Darwin
[C] Aristotle
[D] Whittaker

Question No:4
ADH controls water permeability of

[A] Distal convoluted tubule
[B] Proximal convoluted tubule
[C] Bowman’s capsule
[D] All of the above

Question No:5
Example of inhibitory gene from below options

[A] Fruit shape in Squash
[B] Coat color in mouse,
[C] Fruit color in squash
[D] Feather color in Fowls

Question No:6
In which of the following, all listed genera belong to the same class of algae?

[A] Chara, Fucus, Polysiphonia
[B] Volvox, Spirogyra, Chlamydomonas
[C] Porphyra, Ectocarpus, Ulothrix
[D] Sargassum, Laminaria, Gracillaria

Question No:7
An inexhaustible non-conventional universal source of energy is:

[A] Wind energy
[B] Solar energy
[C] Hydrothermal energy
[D] Tidal energy

Question No:8
Reproductive isolation between segments of a single population is termed:

[A] Sympatry
[B] Allopatry
[C] Population divergence
[D] Disruptive divergence

Question No:9
All flat worms differ from all round worms in having:

[A] Triploblastic body
[B] Solid mesoderm
[C] Bilateral symmetry
[D] Metamorphosis in the life history

Question No:10
ABA can be bioassayed by

[A] Triple pea test
[B] Root inhibition test
[C] Inhibition of a- amylase synthesis in barley endosperm test
[D] Tobacco pith culture

Question No:11
During normal respiration without any effort the volume of air inspired or expired is called:

[A] Tidal volume
[B] Reserve volume
[C] Residual volume
[D] None of these

Question No:12
Testosterone is secreted by

[A] Leydig cell
[B] Sertoli cell
[C] Spermatogenic cell
[D] All of the above

Question No:13
Depict the correct site of hormone:

[A] α-glucagons, β-insulin, δ-somatostatin
[B] α-insulin, β-glucagons, δ-somatostatin
[C] δ-insulin, α-somatostatin, β-glucagons
[D] α -somatostatin, β-insulin, δ-glucagons

Question No:14
Incorrect character of brown algae is:

[A] Chl a and b present
[B] They remain attached
[C] Chl a and c present
[D] Presence of fucoxanthin

Question No:15
de Vries proposed mutation theory on the basis of his observation on the wild variety of which plant

[A] Pisum Sativum
[B] Lathyrus odoratus
[C] Oenothera lamarckiana
[D] Solanum tuberosum

Question No:16
Yeast poison themselves to death when the concentration of alcohol reaches about ____ percent during fermentation,

[A] 10
[B] 13
[C] 25
[D] 20

Question No:17
Amount of residual volume (RV) in ml is

[A] 1100-1200
[B] 1000-1100
[C] 2500-3000
[D] 500

Question No:18
How much % of CO2 is carried in a dissolved state through plasma?

[A] 70
[B] 7
[C] 20-25
[D] 3

Question No:19
Heart of crocodile posses how many chambers?

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

Question No:20
What is the molarity of outer part of inner medulla in Kidney (in m 0% mol / litre)?

[A] 1200
[B] 600
[C] 900
[D] 300

Question No:21
One example of animals having a single opening to the outside that serves both mouth as well as anus is

[A] Octopus
[B] Asterias
[C] Ascidia
[D] Dugesia

Question No:22
ABO blood groups in humans are controlled by the gene I. It has three alleles-lA,IBand i. Since there are three different alleles, six different genotypes are possible. How many pheno-types can occur?

[A] Three
[B] One
[C] Four
[D] Two

Question No:23
Which of the following is used to initiate flowering and synchronising fruit-set in pineapples

[A] gibberellin
[B] phytochrome
[C] ethylene
[D] auxin

Question No:24
The loose sheath of glycocalyx known as

[A] capsule
[B] cell wall
[C] slime layer
[D] mesosome

Question No:25
Satellite DNA is useful tool in

[A] organ transplantation
[B] Sex determination
[C] forensic science
[D] genetic engineering

Question No:26
In a flowering plant, the pollen tube first arrives in

[A] egg
[B] an antipodal cell
[C] a synergid
[D] central cell

Question No:27
Tendril in cucurbita & Thorn in Bougainvillea are example of

[A] convergent evolution
[B] radiation
[C] divergent evolution
[D] co-evolution

Question No:28
‘Complete competitors cannot coexist’ is true for

[A] character displacement
[B] competitive exclusion
[C] primary succession
[D] Secondary succession

Question No:29
DNA has equal number of adenine and thymine residues (A = T) and equal number of guanine and cytosine (G = C). These relationships are known as

[A] Chargaffs rule
[B] Coulomb’s law
[C] Le-Chatelier’s principle
[D] Van’t Hoff plot

Question No:30
Which of the following organs is devoid of glands?

[A] uterus
[B] vagina
[C] vulva
[D] oviduct

Question No:31
Net gain of ATP molecules per hexose during aerobic respiration is

[A] 12
[B] 18
[C] 36
[D] 30

Question No:32
The process of reverse transcription was discovered by

[A] Temin and Baltimore
[B] Watson and Crick
[C] Alfred Hershey
[D] None of the above

Question No:33
The gene which masks the effect of another gene is called

[A] Epistasis
[B] Lethal gene
[C] Multiple allele
[D] Complementary gene

Question No:34
The cause of decline in the population of reptiles and birds is

[B] bio-fertilizer
[C] bio-insecticides
[D] biodegradable

Question No:35
Failure of chloride ion transport mechanism is seen in

[B] Cystic fibrosis
[C] Huntington’s disease
[D] Sickle cell anemia

Question No:36
In root nodules of legumes, leg-haemoglobin is important because:

[A] It transports oxygen to the root nodule
[B] It acts as an oxygen scavenger
[C] It provides energy to the nitrogen fixing bacterium
[D] It acts as a catalyst in transamination

Question No:37
Which one of the following periods is largely associated with extinction of dinosaurs and the increase in flowering plants and reptiles?

[A] Jurassic
[B] Triassic
[C] Cretaceous
[D] Permian

Question No:38
Steroid hormones easily pass through the plasma membrane by simple diffusion because they:

[A] Are water soluble
[B] Contain carbon and hydrogen
[C] Enter through pores
[D] Are lipid soluble

Question No:39
Deserts, grasslands, forests and tundra are the examples of:

[A] Biomes
[B] Biogeographical regions
[C] Ecosystems
[D] Biospheres

Question No:40
Polytene chromosome first reported by

[A] Kollar
[B] Balbiani
[C] Hemming
[D] Ruckert

Question No:41
Synaptic vesicle is found in:

[A] Pre synaptic neuron
[B] Post synaptic neuron
[C] Synaptic cleft
[D] None of the above

Question No:42
Hypothyroidism causes

[A] Myxoderna
[B] Cretinism
[C] Both (a) and (b)
[D] Exopthalmic goiter

Question No:43
Insulin receptors are:

[A] Extrinsic protein
[B] Intrinsic protein
[C] G-protein
[D] Trimeric protein

Question No:44
Digestive enzymes are:

[A] Hydroplanes
[B] Oxido reductases
[C] Transferases
[D] Lyases

Question No:45
Phenetics is

[A] Cytotaxonomy
[B] Cheinotaxonomy
[C] Numerical taxonomy
[D] Classification