NTSE Biology sample questions

1. Binomial nomenclature means

(a)   One name given by two scientists

(b)   Two names, one scientific and other local

(c)   Two names, one latinized and other of a person

(d)   Scientific name of an organism consisting of a generic and specific name

2. The science of classification of organisms is

(a)   Taxonomy

(b)   Taxidermy

(c)   Evolutionary biology

(d)  Biodiversity

3. Taxon is a unit of classification used in
(a)   Genera                (b)   Species
(c)   Orders                (d)   Taxonomy

4. The natural system of plant classification was given by

(a)   Huxley

(b)   Linnaeus

(c)   Bentham and Hooker

(d)   Engler and Prantl

5. The five kingdom classification of living organisms was proposed by

(a)  Whittaker

(b)  Bentham and Hooker

(c)  Engler and Prantl

(d)  Linnaeus

6. All the prokaryotes are included under the kingdom
(a)   Protozoa         (b)   Protista
(c)   Monera             (d)   Fungi

7. All the unicellular eukaryotes are under the kingdom
(a)   Protozoa             (b)   Protista
(c)   Fungi                 (d)   Monera

8. Radially symmetrical diploblastic animal is

(a)   Coelenterata                                                           (b)   Platyhelminthes

(c)   Round worm                                                           (d)   Porifera

1.         d	2.         a	3.         d	4.         c	5.         a
6.         c	7.         b	8.         a

Exercise 2

1.         The hard outer covering in microorganisms is gener­ally called

(a)   Cyst                                   (b)   Capsule

(c)   Spore                                 (d)   Endospore

2.         The ancient anaerobic bacterial forms are called

(a)   Eubacteria                          (b)   Archaebacteria

(c)   Cyanobacteria                     (d)  Mycoplasma

3.             The Moneran that is devoid of cell wall is

(a)   Virus                                   (b)   Cyanobacteria

(c)   PPLO (Mycoplasma)              (d)   Rickettsios

4.             Spirulina is

(a)   a blue green alga                   (b)   Cyanobacteria

(c)   Single cell protein                   (d)   a, b and c

5.         The bacteria that is commonly found living in animal and human intestine is

(a)   Vibrio cholera                     (b)   Salmonella typhi

(c)   Bacillus subtilis                   (d)   Escherichia coli

6.         The extra nuclear material in a bacterial cell that is capable of replication is called

(a)   Plasmid                              (b)   Mesosome

(c)   Genome                             (d)   Chromosome

7.         The highly resistant thick walled spores produced within bacterial cells during unfavorable conditions are called

(a)   Endospores                         (b)   Zoospores

(c)   Conidia                              (d)   Gemmules

8.             A free living nitrogen fixing bacterium is

(a)   Acetobacter                                  (b)   Azotobacter

(c)   Rhizobium                                    (d)   Oscillatoria

9.             Diatomaceous earth is the fossil remains of the cell wall of an alga called

(a)   Chlorella                                        (b)   Blue green alga

(c)   Diatoms                                         (d)   Spirulina

1.         a	2.         b	3.         c	4.         d	5.         d
6.         a	7.         a	8.         b

Exercise 3

1.             Plasmalemma is a term that refers to

(a)   Cell wall                                         (b)     Middle lamella

(c)   Plasma membrane                      (d)     Plasmids

2.             Cell membrane is up made of

(a)   Glycoproteins                       (b)  Protein bilayer

(c)   Lipid bilayer                         (d)   Phospholipids and proteins

3.             Carbohydrates of the plasma membrane is in the form of

(a) Starch                                   (b) Cellulose

(c) Glycoproteins and glycolipids    (d) Glucose

4.             The biomolecule that is present in least quantity in the plasmalemma is

(a) Lipids                                   (b) Carbohydrates

(c) Protein                                  (d) All are in equal proportion

5.             Fluid mosaic model of the cell membrane was given by

(a)   Robertson                            (b)   Singer and Nicolson

(c)   Danielli and Daveson             (d)   Flemming

6.             Osmosis is denned as

(a)   The flow of solute molecules from a higher concentration to lower concentration

(b)   The flow of solute molecules from a lower con­centration to higher concentration

(c)   The flow of solvent molecules across a semi per­meable membrane from a region of lower solute

concentration to a region of higher solute con­centration

(d)   The flow of solute molecules across a semi per­meable membrane from a region of higher sol­ute concentration to a region of lower solute concentration

1.         c	2.         d	3.         c	4.         b	5.         b
6.         c

Exercise 4

1.         CO₂ + H₂O are necessary for _______ while O₂ + H₂O are essential for ________

(a)        Animal and plant life                 

(b) Plant life and Animal life

(c) Producing food and producing off springs

(d) both (b) and ((c)

2.         The food from the mouth enters the stomach via the

(a)   Trachea                                          (b)   Small intestine

(c)   Buccal cavity                                  (d)   Oesophagus

3.         A common region to both the digestive and respira­tory passage is

(a)   Pharynx                                         (b)   Larynx

(c)   Oesophagus                                    (c)   Trachea

4.         The main function of the large intestine is

(a)   To produce digestive enzymes

(b)   Absorb water, salt and some vitamins

(c)   To store the undigested waste

(d)  Absorption and assimilation of food

5.         Which part of our body contains bacteria that pro­duce a vitamin required for blood clotting?

(a)   Stomach                                         (b)   Small intestine

(c)   Large intestine                                (d)  Muscles

6.         The region where the complete digestion of food takes place is the

(a)   Stomach                                         (b)  Small intestine

(c)   Large intestine                                (d)   Pancreas

7.         All the enzymes produced in the digestive tract are basically

(a) Proteins                                            (b) Proteins and fats

(c) Monosaccharide                                (d) Nucleotides

8.         A concentrated acid produced by the stomach is

(a)   Nitric acid                                      (b)   Hydrochloric acid

(c)   Sulphuric acid                                 (d)   A mixture of hydrochloric and nitric acid

1.         b	2.         d	3.         a	4.         b	5.         c
6.         b	7.         a	8.         b