NEET : Biology (Zoology) : 2020- Exam Mode

Biology – NEET 2020 – Exam Mode – Zoology

This quiz is in the format of Exam, has 45 questions. Results are displayed at end.

Total time duration : 45 Minutes
Points to remember
- Right answer : +4
- Wrong Answer : -1
- Number of attempts : Unlimited

1 / 45

By which method was a new breed ‘Hisardale’ of sheep formed by using Bikaneri ewes and Marino rams ?

Out crossing

Mutational breeding

Cross breeding

Inbreeding

2 / 45

Identify the correct statement with reference to human digestive system.

Ileum opens into small intestine.

Serosa is the innermost layer of the alimentary canal.

Ileum is a highly coiled part.

Vermiform appendix arises from duodenum

3 / 45

Match the following columns and select the correct option.

Column – I	Column – II
a) Clostridium butylicum	i) Cyclosporin-A
b) Trichoderma polysporum	ii) Butyric Acid
c) Monascus purpureus	iii) Citric Acid
d) Aspergillus niger	iv) Blood cholesterol lowering agent

a-> (iii) , b->(iv) , c->(ii) , d->(i)

a->(ii) , b->(i) , c->(iv) , d->(iii)

a->(i) , b->(ii) , c->(iv) , d->(iii)

a->(iv) , b->(iii) , c->(ii) , d->(i)

4 / 45

Presence of which of the following conditions in urine are indicative of Diabetes Mellitus ?

Uremia and Ketonuria

Uremia and Renal Calculi

Ketonuria and Glycosuria

Renal calculi and Hyperglycaemia

5 / 45

Floridean starch has structure similar to :

Starch and cellulose

Amylopectin and glycogen

Mannitol and algin

Laminarin and cellulose

6 / 45

Select the option including all sexually transmitted diseases.

Gonorrhoea, Syphilis, Genital herpes

Gonorrhoea, Malaria, Genital herpes herpes

AIDS, Malaria, Gonorrhoea, Genital herpes

Cancer, AIDS, Syphilis

7 / 45

Match the following with respect to meiosis :

Column – I	Column – II
(a) Zygotene	(i) Terminalization
(b) Pachytene	(ii) Chiasmata
(c) Diplotene	(iii) Crossing over
(d) Diakinesis	(iv) Synapsis

Select the correct option from the following :

a->(iii) , b->(iv) , c->(i) , d->(ii)

a->(iv) , b->(iii) , c->(ii) , d->(i)

a->(i) , b->(ii) , c->(iv) , d->(iii)

a->(ii) , b->(iv) , c->(iii) , d->(i)

8 / 45

Which of the following pairs is of unicellular algae ?

Laminaria and Sargassum

Gelidium and Gracilaria

Anabaena and Volvox

Chlorella and Spirulina

9 / 45

Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle ?

High concentration of Estrogen

High concentration of Progesterone

Low concentration of LH

Low concentration of FSH

10 / 45

Match the following columns and select the correct option.

	Column – I		Column – II
a	Bt cotton	i	Gene therapy
b	Adenosine deaminase deficiency	ii	Cellular defence
c	RNAi	iii	Detection of HIV infection
d	PCR	iv	Bacillus thuringiensis

a->(iv),b-> (i), c->(ii) ,d->(iii)

a->(iii),b-> (ii), c-> (i) ,d-> (iv)

a->(ii) ,b-> (iii), c-> (iv) ,d->(i)

a->(i) ,b-> (ii) , c->(iii) ,d->(iv)

11 / 45

Montreal protocol was signed in 1987 for control of :

Transport of Genetically modified organisms from one country to another

Emission of ozone depleting substances

Release of Green House gases

Disposal of e-wastes

12 / 45

Which of the following is correct about viroids ?

They have RNA with protein coat.

They have free RNA without protein coat.

They have DNA with protein coat.

They have free DNA without protein coat.

13 / 45

The ovary is half inferior in

Brinjal

Mustard

Sunflower

Plum

14 / 45

The enzyme enterokinase helps in conversion of :

protein into polypeptides

trypsinogen into trypsin

caseinogen into casein

pepsinogen into pepsin

15 / 45

Match the trophic levels with their correct species examples in grassland ecosystem.

	Column – I		Column – II
a	Fourth trophic level	i	Crow
b	Second trophic level	ii	Vulture
c	First trophic level	iii	Rabbit
d	Third trophic level	iv	Grass

Select the correct option :

a->(ii) ,b>(iii) ,c>(iv) ,d->(i)

a->(iii) ,b>((ii) ,c>(i) ,d->(iv)

a->(iv) ,b>((iii) ,c>(ii) ,d->(i)

a->(i) ,b>((ii) ,c>(iii) ,d->(iv)

16 / 45

How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits ?

4

2

14

8

17 / 45

Match the following columns and select the correct option.

	Column – I		Column – II
a	Organ of Corti	i	Connects middle ear and pharynx
b	Cochlea	ii	Coiled part of the labyrinth
c	Eustachian tube	iii	Attached to the oval window
d	Stapes	iv	Located on the basilar membrane

a->(ii), b-> (iii), c-> (i), d-> (iv)

a->(iii, b->) (i), c-> (iv), d-> (ii)

a->(iv), b-> (ii), c-> (i), d-> (iii)

a->(i), b-> (ii), c-> (iv), d-> (iii)

18 / 45

In water hyacinth and water lily, pollination takes place by

Insects or wind

Water currents only

Wind and waterwind and water

Insects and water

19 / 45

Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.

Cytokinin

Gibberellin

Ethylene

Abscisic acid

20 / 45

In light reaction, plastoquinone facilitates the transfer of electrons from :

PS-II to Cytb6 f complex

Cytb6 f complex to PS-I

PS-I to NADP+

PS-I to ATP synthase

21 / 45

Which of the following is not an inhibitory substance governing seed dormancy ?

Gibberellic acid

Abscisic acid

Phenolic acid

Para-ascorbic acid

22 / 45

Name the enzyme that facilitates opening of DNA helix during transcription.

DNA ligase

DNA helicase

DNA polymerase

RNA polymerase

23 / 45

Which of the following would help in prevention of diuresis ?

More water reabsorption due to undersecretion of ADH

Reabsorption of Na+ and water from renal tubules due to aldosterone

Atrial natriuretic factor causes vasoconstriction

Decrease in secretion of renin by JG cells

24 / 45

In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct ?

Gross primary productivity is always less than net primary productivity.

Gross primary productivity is always more than net primary productivity.

Gross primary productivity and Net primary productivity are one and same.

There is no relationship between Gross primary productivity and Net primary productivity.

25 / 45

Match the following columns and select the correct option.

	Column – I		Column – II
a	Placenta	i	Androgens
b	Zona pellucida	ii	Human Chorionic Gonadotropin (hCG)
c	Bulbo-urethral glands	iii	Layer of the ovum
d	Leydig cells	iv	Lubrication of the Penis

a->(iv), b-> (iii), c-> (i), d-> (ii)

a->(i), b-> (iv), c-> (ii), d-> (iii)

a->(iii), b-> (ii), c-> (iv), d-> (i)

a->(ii), b-> (iii), c-> (iv), d-> (i)

26 / 45

Strobili or cones are found in :

Salvinia

Pteris

Marchantia

Equisetum

27 / 45

Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G₀).

This process occurs at the end of :

M phase

G₁ phase

S phase

G₂ phase

28 / 45

Flippers of Penguins and Dolphins are examples of :

Adaptive radiation

Convergent evolution

Industrial melanism

Natural selection

29 / 45

If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6×10⁹ bp, then the length of the DNA is approximately :

2.0 meters

2.5 meters

2.2 meters

2.7 meters

30 / 45

The QRS complex in a standard ECG represents

Repolarisation of auricles

Depolarisation of auricles

Repolarisation of ventricles

Depolarisation of ventricles

31 / 45

Match the following columns and select the correct option.

	Column – I		Column – II
a	Eosinophils	i	Immune response
b	Basophils	ii	Phagocytosis
c	Neutrophils	iii	Release histaminase, destructive enzymes
d	Lymphocytes	iv	Release granules containing histamine

a->(iii), b-> (iv), c-> (ii), d-> (i)

a->(iv), b-> (i), c-> (ii), d-> (iii)

a->(i), b-> (ii), c-> (iv), d-> (iii)

a->(ii), b-> (i), c-> (iii), d-> (iv)

32 / 45

Which of the following statements is correct ?

Adenine pairs with thymine through two H-bonds.

Adenine pairs with thymine through one H-bond.

Adenine pairs with thymine through three H-bonds.

Adenine does not pair with thymine

33 / 45

The sequence that controls the copy number of the linked DNA in the vector, is termed :

Selectable marker

Ori site

Palindromic sequence

Recognition site

34 / 45

Identify the basic amino acid from the following.

Tyrosine

Glutamic Acid

Lysine

Valine

35 / 45

Match the following columns and select the correct option.

	Column – I		Column – II
a	Pituitary gland	i	Grave’s disease
b	Thyroid gland	ii	Diabetes mellitus
c	Adrenal gland	iii	Diabetes insipidus
d	Pancreas	iv	Addison’s disease

a->(iv), b-> (iii), c-> (i), d-> (ii)

a->(iii), b-> (ii), c-> (i), d-> (iv)

a->(iii), b-> (i), c-> (iv), d-> (ii)

a->(ii), b-> (i), c-> (iv), d-> (iii)

36 / 45

Select the correct statement.

Glucocorticoids stimulate gluconeogenesis.

Glucagon is associated with hypoglycemia.

Insulin acts on pancreatic cells and adipocytes.

Insulin is associated with hyperglycemia.

37 / 45

Which one of the following is the most abundant protein in the animals ?

Haemoglobin

Collagen

Lectin

Insulin

38 / 45

Experimental verification of the chromosomal theory of inheritance was done by :

Mendel

Sutton

Boveri

Morgan

39 / 45

Match the following columns and select the correct option.

	Column – I		Column – II
a	Floating Ribs	i	Located between second and seventh ribs
b	Acromion	ii	Head of the Humerus
c	Scapula	iii	Clavicle
d	Glenoid cavity	iv	Do not connect with the sternum

(a) (b) (c) (d) ->(ii) (iv) (i) (iii)

(a) (b) (c) (d) ->(i) (iii) (ii) (iv)

(a) (b) (c) (d) ->(iii) (ii) (iv) (i)

(a) (b) (c) (d) ->(iv) (iii) (i) (ii)

40 / 45

The number of substrate level phosphorylations in one turn of citric acid cycle is :

Zero

one

Two

Three

41 / 45

Dissolution of the synaptonemal complex occurs during :

Pachytene

Zygoten

Diplotene

Leptotene

42 / 45

Bilaterally symmetrical and acoelomate animals are exemplified by

Ctenophora

Platyhelminthes

Aschelminthes

Annelida

43 / 45

The body of the ovule is fused within the funicle at

Hilum

Micropyle

Nucellus

Chalaza

44 / 45

Goblet cells of alimentary canal are modified from

Squamous epithelial cells

Columnar epithelial cells

Chondrocytes

Compound epithelial cells

45 / 45

Snow-blindness in Antarctic region is due to :

Freezing of fluids in the eye by low temperature

Inflammation of cornea due to high dose of UV-B radiation

High reflection of light from snow

Damage to retina caused by infra-red ray

Your score is