Hey folks,

Are you preparing for NEET 2020 examination seriously, let’s test your knowledge with 30 neet biology questions which are twisted to answer.

Neet Questionnaire contains a major portion (approx. 40%) of twisted questions.

These questions are easy but confusing as they are twisted.

Most of the aspirants commit mistakes in this portion and lose marks.

skkopi.com attempts to familiarise the type of twisted questions and answers with the help of professionals to the NEET aspirant readers to avoid confusion and score highest marks.

Let’s Starts, go through the questions

1.      Seed formation without fertilization in flowering plants involves the process of

 

a.    Sporulation

b.    Budding

c.    Somatic hybridization

d.    Apomixis

D – Apomixis is the special mechanism of plants to produce seeds without fertilization.

2.      In the stomach, parietal cells secrets

 

a.    Peptic acid

b.    folic acid

c.    Gastric acid

d.    Acidic acid

C – Gastric acid or HCL(Hydrochloric acid) is secreted by parietal cells

3.      Specialized epidermal cells surrounded by subsidiary cells are called 

 

a.    Complementary cells

b.    Bulliform cells

c.    Lenti cells

d.    Guard cells

D – Guard cells & Subsidiary cells both are the modification of Epidermal cells in which Guard cells are surrounded by subsidiary cells.

4.      Stems modified into flat green organs performing the function of leaves are known as

 

a.    Phyllodes

b.    Phylloclades

c.    Cladodes

                   d.  Scales

B – A flattened stem or branch that functions as leaves are called Phylloclades.

5.      Phyllode is the modification of 

 

a.    Petioles

b.    Phylloclades

c.    Cladodes

d.    Scales

A – Phyllodes are the modification of petioles or leaf stem.

6.      Death of fish due to lack of oxygen in rivers is caused by

 

a.    Algal bloom in the river

b.    Inflow of domestic sewage rich in organic waste

c.    Increased population of aquatic food web organisms

d.    An increased production of fish due to biodegradable nutrients

 B – Inflow of domestic sewage rich in organic waste reduces the dissolved oxygen that result in the death of fish due to lack of oxygen.

7.      Which of the following statements is incorrect?

 

a.    Prions consist of abnormally folded proteins

b.    Viroids are protein coated

c.    Infective constituent in virus is either DNA or RNA

d.  Viruses are obligate parasites

B – Viroids are lack of protein coated.

8.      Select the correct option

 

a.    Vertebrosternal ribs articulate directly with the sternum

b.    8th, 9th and 10th pairs of ribs joins the 7th ribs with the help of hyaline cartilage

c.    11th and 12th pair of ribs are connected to the sternum with the help of hyaline cartilage.

d.    There are 7 pairs of vertebrochondral, 3 pairs of vertebrosternal and 2 pairs of vertebral ribs

B – 8th , 9th and 10th pairs of ribs joins the 7th ribs with the help of hyaline cartilage. These are false ribs.

9.      Monascus purpureus yeast produces which commercial blood cholesterol lowering agent

a.    Lipases

b.   Streptokinase

c.    Statin

d.    Cyclosporin A

C –  Monascus purpureus yeast (Fungi) Produces Statin.

10.      The Organism with feeding mechanism called Radula is

 

a.    Taenia

b.    Bombyx

c.    Pila

d.    E Coli

C – Pila is a mollusc(soft body organisms).Its mouth contains a file like organ for feeding called Radula.

11.      Syngamy and triple fusion occurs in 

 

a.    Algae

b.    Angiosperms

c.    Fungi

d.    Gymnosperms

B – Angiosperms exhibits double fertilization. It involves Syngamy and triple fusion.

12.      Which of the following organisms found in high salty water (saline habitats)

 

a.    Halophiles

b.    Eubacteria

c.    Mycophiles

d.    Archaebacteria.

A – Halophiles are the microorganisms found in high salty water like the dead sea..

13.      All Gymnosperms are

 

a.    Hydrophilous

b.    Anemophilous

c.    Entomophilous

d.    Malacophilous

B – Anemophilous is the type of pollination where pollen is distributed by wind.

14.      The hepatic portal vein drains blood from Intestine to

 

a.    Heart

b.    Kidneys

c.    Stomach

                   d.   Liver

15.      Suberin rich casparian strip of the root

 

a.    Epidermis

b.    Cortex

c.    Endodermis

                   d.  Pericycle

C – Endodermis have casparian strip rich in suberin.

16.      Lipids are esters of the

 

a.    Fatty acid and alcohol

b.    Amino acid and alcohol

c.    Acetic acid and alcohol

d.    Nucleic acid and alcohol

A – Lipids are esters of fatty acid and alcohol.

17.      The region of Biosphere reserve which is legally protected and where limited human activity allowed is known as

 

a.    Core zone

b.    Transition zone

c.    Limited zone

d.    Buffer zone

D – Biosphere reserve  where limited human activity allowed is known as Buffer zone.

18.      Mitochondria are responsible to form ATP by extracting energy from 

 

a.    Carbohydrates

b.    Proteins

c.    MCT

d.    Fats

A – Mitochondrion is the place of aerobic oxidation of carbohydrates to generate ATP.

19.      Lerma Rojo and Sharbati sonora are the varieties of

 

a.    Rice

b.    Wheat

c.    Basmati rice

d.    Millets

B – Lerma Rojo and Sharbati sonora are the varieties of wheat.

20.      T.H Morgan worked on Drosophila and developed the

 

a.    Theory of cell structure

b.    Theory of heredity

c.    Theory of evolution

d.    Theory of genesis

B – T.H Morgan worked on Drosophila(Vinegar fly) and developed the theory of heredity.

21.      G. Mendel founder of modern genetics experiments on 

 

a.    Plant germination

b.    Plant hybrids cross

c.    Cell structure

d.    Root structure.

B – G.Mendel experiments on pea plant hybrid cross for transmission of hereditary trait.

22.      Emigration refers to

 

a.   Number of individuals entering a habitat

b.   Number of individuals leaving a habitat

c.   Death rate

d.   Birth rate

B – Number of individuals leaving a habitat

 

23.      Which of the following is a product of plant respiration process?

 

a.   NADPH

b.   ATP

c.   NADH

d.   Oxygen

C – NADH is a product of plant respiration process,while ATP , NADPH and Oxygen are the product of light reaction.

24.      Which of the following is a baker’s yeast?

 

a.   Nostoc

b.   Scillatoria

c.   E coli

d.   Saccharomyces

D –  Saccharomyces are considered very important in food production. It is known as the brewer’s yeast or baker’s yeast.

25.      Which fungus multiply asexually by the method of sporulation

 

a.   Alternaria

b.   Neurospora

c.   Agaricus

d.   Saccharomyces

A – Alternaria is a fungus & have no sexual stage.It multiply asexually by the method of sporulation.

 

26.      which of the following characteristics not represent ‘Inheritance of blood group’ in humans?

 

a.    Dominance

b.    Multiple allelic

c.    Polygenic inheritance

d.    Codominance

C – Polygenic inheritance

27.      Which of the following is In-situ conservation?

 

a.    Seed banks

b.    Sacred groves

c.    Botanical gardens

d.    Wildlife safari parks

B – Sacred groves represent part of the forest protected by Tribal groups.

28.      Which of the following is a form of food poisoning?

 

a.    Silicosis

b.    Emphysema

c.    Anthracis

d.    Botulism

D – Botulism is a form of food poisoning caused by clostridium botulinum.

 

29.      Which one of these animals is a poikilothermic?

 

a.   Loin

b.   Turtle

c.   Earthworm

d.   Fish

B – Turtle belongs to class reptilia which is cold blooded or poikilothermic animal.

30.      Which of the following element is responsible for maintaining turgor pressure in cells?

 

a.    Potassium

b.    Magnesium

c.    Sodium

d.    Calcium

A – Potassium helps in maintaining turgidity or tension of cell.

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