NCERT Class-11 Class-12 Biology sample Questions,NEET MCQs,PDFs

NEET Biology Model Test-7

NEET Biology Model Test-7

Question No:1
Xylem formed by how many different kinds of elements?

[A] 1
[B] 3
[C] 4
[D] 5

Question No:2
Which of the following is the number of chromosomes present in gamete of rat?

[A] 12
[B] 21
[C] 19
[D] 24

Question No:3
Stomatal apparatus is made of how many components?

[A] 1
[B] 3
[C] 4
[D] 5

Question No:4
How many carpels are present in flower of sem?

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

Question No:5
Cranial bones are ___ ___ in number.

[A] 6
[B] 8
[C] 4
[D] 10

Question No:6
Select the correct statement from the ones given below

[A] Barbiturates when given to criminals make them tell the truth
[B] Morphine is often given to persons who have under gone surgery as a pain killer
[C] Chewing tobacco lowers blood pressure and heart rate
[D] Cocaine is given to patients after surgery as it stimulates recovery

Question No:7
Which variety of wheat has high protein content?

[A] Himgiri
[B] P 1542
[C] Sonalika
[D] Atlas 66

Question No:8
Find the total number of algae belongs to class phaeophyceae from the following
Volvox, ectocarpus gelidium, dictyota, ficus, laminaria, porphyra, chara, gracilaria, cladophora

[A] 3
[B] 4
[C] 2
[D] 5

Question No:9
Which one of the following statements about all the four of Physalia, obelia, ctenoplana and sea fan is correct?

[A] all are tribloblastic
[B] digestion is both intra cellular and extra cellular
[C] all posses cnidoblast
[D] All are bilaterally symmetrical

Question No:10
The second maturation division of the mammalian ovum occurs

[A] shortly after ovulation before the ovum makes entry into the Fallopian tube
[B] until after the ovum has been penetrated by a sperm
[C] until the nucleus of the sperm has fused with that of the ovum
[D] in the Graafian follicle following the first maturation division

Question No:11
A peculiar odour that prevails in marshy areas and cow-sheds is on account of a gas produced by

[A] mycoplasma
[B] archaebacteria
[C] slime moulds
[D] cyanobacteria

Question No:12
Haemoglobin is

[A] an oxygen carrier in human blood
[B] a protein used as food supplement
[C] an oxygen scavenger in root nodules
[D] a plant protein with high lysine content

Question No:13
mRNA directs the building of proteins through a sequence of

[A] introns
[B] codons
[C] exons
[D] anticodons

Question No:14
‘Balancing selection’ promotes

[A] homozygotes
[B] heterozygotes
[C] polyploids
[D] recessive traits

Question No:15
Primary spermatocyte differs from spermatogonium in

[A] number of chromosomes
[B] size and volume
[C] DNA content
[D] size of chromosomes

Question No:16
The term “hot dilute soup” was used by

[A] Haldane
[B] von Helmont
[C] Redi
[D] Louis Pasteur

Question No:17
Which one of the following animal has pseudocoelome?

[A] Cockroach
[B] Ancylostoma
[C] Aurelia
[D] Fasiola

Question No:18
In a DNA molecule, the adenine is 1 5%. What will be the percentage of guanine in this DNA?

[A] 15%
[B] 35%
[C] 70%
[D] 30%

Question No:19
Which one of the following shows detritus food chain?

[A] Organic waste —> Bacteria —» Mollusc
[B] Grass —»Insects —> Snakes
[C] Plankton —> Small fishes —> Large fishes
[D] All of the above

Question No:20
Match the column
Antibiotic— Effect
A. Tetracycline—– (i) Inhibits translocation of m RNA along ribosome
B. Chloramphenicol ——(ii) Inhibit interaction between tRNA and m-RNA
C. Erythromycin —— (iii) Inhibit binding amino-acyl tRNA to ribosome
D. Neomycin—- (iv) Inhibit peptidyl transferase

[A] A-i, B-ii, C-iii, D-iv
[B] A-iii, B-iv, C-i, D-ii
[C] A – ii, B – iii, C – iii, D – i
[D] A – iv, B – i, C – ii, D – iii

Question No:21
Darwin judged the fitness of an individual by:

[A] Ability to defend itself
[B] Strategy to obtain food
[C] Number of off springs
[D] Dominance over other individuals

Question No:22
Which type of water is used by the plants?

[A] Gravitational water
[B] Capillary water
[C] Hygroscopic water
[D] Bound water

Question No:23
Industrial melanism is an example of:

[A] Defensive adaptation of skin against UV radiations
[B] Drug resistance
[C] Protective resemblance with the surrounding
[D] Darkening of skin due to industries

Question No:24
Which of the following is a free living nitrogen fixing bacterium present in the soil?

[A] Nitrosomonas
[B] Rhizobium
[C] Azotobacter
[D] Psendomonas

Question No:25
What happens when sperm enters hi secondary oocyte in humans

[A] Breaking of MPF
[B] Turning of APC
[C] Both of above
[D] None of the above

Question No:26
3-PGA is first stable product in

[A] carbon-reduction cycle
[C] Malic acid

Question No:27
Which of the following controls the function of Sertoli cell?

[B] Estrogen
[D] Testosterone

Question No:28
Mode of feeding in free living protozoan is:

[A] Holozoic
[B] Saprozoic
[C] Both (a) and (b)
[D] None of these

Question No:29
Protein found in eye lens is:

[A] Crystalline
[B] Collagen
[C] Opsin
[D] Rhodopsin

Question No:30
Most well known natural system of classification of angiosperm was proposed by

[A] Bentham and Hooker
[B] Aristotle
[C] Schleiden and Schwann
[D] Beadle and Tatum

Question No:31
A mere ______ per cent impurities make domestic sewage unfit for human use.

[A] 0.001
[B] 0.1
[C] 1
[D] 10

Question No:32
How many parathyroid glands are present in humans?

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

Question No:33
Administration of progestogens or progestogen-estrogen combination or lUDs within _______ hours(max) of coitus have found to be very effective emergency contraceptives as they could be used to avoid possible pregnancy due to rape or causal unprotected intercourse,

[A] 24
[B] 36
[C] 72
[D] 84

Question No:34
How many petals are present in one flower of Makoi?

[A] 4
[B] 5
[C] 3
[D] 6

Question No:35
Coxal bone is formed by fusion of how many bones?

[A] 3
[B] 6
[C] 4
[D] 2

Question No:36
Select correct statement from the following
A: Wheezing sound is produced hi asthma
B: Emphysema is chronic disorder and one of its major cause is cigarette smoking
C: Pneumotaxic cetre present in medulla

[A] A and B
[B] A and C
[C] B and C
[D] A, B and C

Question No:37
True about Nucleopolyhedrovirus (biocontrol agent)

[A] species-non specific
[B] narrow spectrum
[C] harmful to non target insect also
[D] has negative impact on plant, mammals, birds

Question No:38
The technical term used for the androecium in a flower of Pea (Pisum sativum) is

[A] monadelphous
[B] diadelphous
[C] polyandrous
[D] polyadelphous

Question No:39
The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy?

[A] Fourth month
[B] Fifth month
[C] Sixth month
[D] Third month

Question No:40
Which one of the following does not follow the central dogma of molecular biology?

[A] Pea
[B] Mucor
[C] Chlamydomonas

Question No:41
A germplasm collection is a

[A] Collection of specimens of all the species of an area in a herbarium or botanical garden
[B] Collection of modern varieties of a crop
[C] Collection of plants or seeds having diverse alleles of all genes in a crop
[D] Collection of seeds or pollen of rare and threatened species of a group or area

Question No:42
Stomatal opening is affected by

[A] Nitrogen concentration, carbon dioxide concentration and light
[B] carbon dioxide concentration, temperature and light
[C] nitrogen concentration, light and temperature
[D] carbon dioxide concentration, nitrogen concentration and temperature

Question No:43
Foramen ovale

[A] connects the two atria in the foetal heart
[B] is a condition in which the heart valves do not completely close
[C] is a shallow depression in the interventricular septum
[D] is a connection between the pulmonary trunk and the aorta in the foetus

Question No:44
Vomiting centre is located in the

[A] medulla oblongata
[B] stomach and sometimes in duodenum
[C] GI tract
[D] hypothalamus

Question No:45
In human, cleavage divisions are

[A] slow and synchronous
[B] fast and synchronous
[C] slow and asynchronous
[D] fast and asynchronous