NCERT Class-11 Class-12 Biology Questions,answers,solutions,model tests

NEET Biology Model Test-4

NEET Biology Model Test-4

Question No:1
The stored food in animals is called

[A] cellulose
[B] starch
[C] glucose
[D] glycogen



Question No:2
Which one of the following is not a plastid?

[A] Mitoplast
[B] Chromoplast
[C] Chloroplast
[D] Leucoplast



Question No:3
The inherent maximum capacity of an organism to reproduce or increase in number is called as

[A] biotic potential
[B] ecosystem
[C] population
[D] ecology



Question No:4
An important evidence in favour of organic evolution is the occurrence

[A] Homologous and vestigial organs
[B] Analogous and vestigial organs
[C] Homologous organs only
[D] Homologous and analogous organs



Question No:5
Which part is edible in Jack fruit.

[A] Bracts
[B] Seeds
[C] Perianth
[D] All of these



Question No:6
Which of the following is true?

[A] Vessels are unicellular and with narrow lumen
[B] Vessels are multi cellular and with wide lumen
[C] Tracheids are unicellular and with wide lumen
[D] Tracheids are multi cellular and with narrow lumen



Question No:7
Jute fibres are obtained from the:

[A] Secondary phloem
[B] Pith
[C] Xylem
[D] Endodermis



Question No:8
Which of the following combinations of characters is true for slime moulds?

[A] Parasitic, plasmodium with true walls, spores dispersed by air currents
[B] Saprophytic, plasmodium without walls, spores dispersed by water
[C] Parasitic, plasmodium without walls, spores dispersed by water
[D] Saprophytic, plasmodium without walls, spores dispersed by air currents



Question No:9
In an aquatic ecosystem, the trophic level equivalent to cows in grasslands is:

[A] Phytoplankton
[B] Zooplankton
[C] Nekton
[D] Benthos



Question No:10
Transplant between different species is

[A] Isograft
[B] Allograft
[C] Xenograft
[D] None of these



Question No:11
Which of the following is balancing organ?

[A] Organ of Corti
[B] Cochlea
[C] Vestibular region
[D] All of these



Question No:12
Zygospore is:

[A] Give rise to zoospores on meiosis
[B] Equivalent to Ascus, Brasilia
[C] Dormant stage
[D] Give raise to asexual spore



Question No:13
Bones become fragile in:

[A] Osteoporosis
[B] Gout
[C] Arthritis
[D] None of these



Question No:14
Each immunoglobin has two heavy chains and two light chains; the antigen binding is present in:

[A] Variable region of heavy chain
[B] Variable region of both heavy and light chain
[C] Variable region of light chain
[D] Constant region of both light and heavy chain



Question No:15
Haversian system is found in

[A] Bone
[B] Blood
[C] Cartilage
[D] Muscles



Question No:16
If 4 individuals in a laboratory population of 40 fruit flies died during specified time interval, say a week, the death rate in the population during that period is ______ individuals per fruit fly per weeks

[A] 0.01
[B] 0.1
[C] 1
[D] 10



Question No:17
There are lymphoid tissues located within the lining of the major tract (respiratory, digestive and urogenital tracts) called mucosal associated lymphoid tissue (MALT). It constitutes how much percent of lymphoid tissue in human body?

[A] 30
[B] 40
[C] 50
[D] 60



Question No:18
Macronutrients are generally present in the plant tissues in large amounts (in excess of _______ m mole Kg1 of the dry weight)

[A] 5
[B] 10
[C] 15
[D] 20



Question No:19
In which year, T.O. Diener discovered viroids?

[A] 1971
[B] 1961
[C] 1981
[D] 1991



Question No:20
How much % of Plasma is water?

[A] 95-97
[B] 90-92
[C] 80-85
[D] 75-80



Question No:21
Leydig cells are found in

[A] ovaries and secrete progesterone
[B] adrenal cortex and secrete adrenalin
[C] seminiferous tubules and provide nutrition to germ cells
[D] seminiferous tubules and secrete androgens



Question No:22
PGA as the first CO2 fixation product was discovered in photosynthesis of

[A] pteridophyte
[B] gymnosperm
[C] angiosperm
[D] alga



Question No:23
Which one of the following is an example of in situ conservation?

[A] a) botanical garden
[B] Seed bank
[C] Sacred groves
[D] zoological park



Question No:24
Which two of the following changes (1—4) usually tend to occur in the plain dwellers when they move to high altitudes (3,500 m or more)?
(1) Increase in red blood cell size
(2) Increase in red blood cell production
(3) Decreasing breathing rate
(4) Decreasing the binding affinity of hemoglobin

[A] (2) and (3)
[B] (3) and (4)
[C] (2) and (4)
[D] (l)and(2)



Question No:25
Genetic engineering has been successfully used for producing

[A] transgenic mice for testing safety of polio vaccine before use in humans
[B] transgenic models for studying new treatments for certain cardiac diseases
[C] transgenic cow-Rosie which produces high fat milk for making ghee
[D] animals like bulls for farm work as they have super power



Question No:26
If two pea plants having red (dominant) coloured flowers with unknown genotypes are crossed, 75% of the flowers are red and 25% are white. The genotypic constitution of the parents having red coloured flowers will be

[A] both homozygous
[B] one homozygous and other heterozygous
[C] both heterozygous
[D] both hemizygous



Question No:27
When the conditions are dry, a grass leaf curls inward to minimize water loss due to presence of

[A] thick cuticle
[B] large xylem cavities
[C] parallel venation
[D] bulliform cells



Question No:28
Somatostatin

[A] stimulates glucagon release while inhibits insulin release
[B] stimulates release of insulin and glucagon
[C] inhibits release of insulin and glucagon
[D] inhibits glucagon release while stimulates insulin release



Question No:29
Maltose gives rise to two molecules of _____ on hydrolysis

[A] fructose
[B] lactose
[C] glucose
[D] sucrose



Question No:30
Phagocytosis and pinocytosis are collectively termed as

[A] endocytosis
[B] suspension feeding
[C] c) omnivores
[D] mucous trap



Question No:31
The cellular respiration first takes place in the

[A] cytoplasm
[B] Golgi bodies
[C] ER
[D] lysosomes



Question No:32
In retroviruses, RNA dependent DNA polymerase synthesizes

[A] RNA-DNA
[B] DNA
[C] RNA
[D] None of these



Question No:33
Which of the following is best suited for co-dominance?

[A] Both are recessive
[B] Both are dominance
[C] One is recessive
[D] One is dominance



Question No:34
Eutrophication is the result of

[A] Bryophyte
[B] Algae and aquatic plants
[C] Gymnosperm
[D] Pteridophyte



Question No:35
Bands generally used for plant karyotyping.

[A] Q and C band
[B] Q and R band
[C] G and C band
[D] N and C band



Question No:36
In C4 plants, the bundle sheath cells:

[A] Have thin walls to facilitate gaseous exchange
[B] Have large intercellular spaces
[C] Are rich in PEP carboxylase
[D] Have a high density of chloroplasts



Question No:37
A chromosome in which the centromere is situated close to its end so that one arm is very short and the other very long is:

[A] Acrocentric
[B] Metacentric
[C] Sub-metacentric
[D] Telocentric



Question No:38
Which is an organic compound found in most cells?

[A] Glucose
[B] Water
[C] Sodium chloride
[D] Oxygen



Question No:39
Oxidative phosphorylation refers to:

[A] Anaerobic production of ATP
[B] The citric acid cycle production of ATP
[C] Production of ATP by chemiosmosis
[D] Alcoholic fermentation



Question No:40
The UN conference of Parties on climate change in the year 2016 was held at

[A] Warsow
[B] Lima
[C] Marrakech
[D] Paris



Question No:41
Glenoid cavity is found in:

[A] Pelvic girdle
[B] Pectoral girdle
[C] Sternum
[D] Humerus



Question No:42
Which disaccharide has different linkage?

[A] Maltose
[B] Starch
[C] Sucrose
[D] Lactose



Question No:43
During repolarization of nerve:

[A] K+ gate closed and Na+ gate open
[B] Na+ channels are closed K+ channels are open
[C] Both gates remain open
[D] Both K+ and Na+ gates are closed



Question No:44
Extension of plasma membrane in prokaryotic cell is:

[A] Mesosome
[B] Hapnoid
[C] Ribosome
[D] None of these



Question No:45
Who firmly establish Germ theory of disease

[A] Darwin
[B] A.Weismann
[C] L.Pasteur
[D] Cuvier