Biology · NDA previous year questions

Damage to the apical meristem of a growing young plant will affect the

1. A.length of the plant
2. B.colour of the flower
3. C.colour of the leaves
4. D.taste of the fruits

Which of the following kingdoms has/have only unicellular organisms?

1. A.Monera only
2. B.Protista only
3. C.Monera and Protista both
4. D.Protista and Fungi both

Which one of the following is a waterborne disease?

1. A.Jaundice
2. B.Tuberculosis
3. C.Rabies
4. D.Arthritis

The oxygenated blood from the lungs is received by the

1. A.left auricle
2. B.left ventricle
3. C.right auricle
4. D.right ventricle

The oxygen evolved during photosynthesis comes from splitting of

1. A.water
2. B.carbon dioxide
3. C.oxygen
4. D.light

If one set of chromosomes for a given plant is represented as N; in case of double fertilization, the zygote and the endosperm nucleus of a diploid plant would have how many sets of chromosomes respectively?

1. A.$N$ and $2N$
2. B.$2N$ and $2N$
3. C.$N$ and $3N$
4. D.$2N$ and $3N$

Which one of the following metals is used in the filaments of photo-electric cells that convert light energy into electric energy?

1. A.Tungsten
2. B.Copper
3. C.Rubidium
4. D.Aluminium

AIDS is caused by a virus whose genetic material is

1. A.single stranded circular DNA
2. B.double stranded DNA
3. C.single stranded RNA
4. D.double stranded RNA

Which one of the following is an organelle that is NOT found in prokaryotic cells?

1. A.Cell wall
2. B.Mitochondria
3. C.Plasma membrane
4. D.Ribosome

Which one of the following statements about classification of plants is correct?

1. A.Thallophytes have well differentiated body design
2. B.Funaria is a fungus
3. C.All Pteridophytes are Phanerogams
4. D.Vascular system is not found among Bryophytes

Which one of the following is the correct sequence of levels of hierarchy of classification of organisms from higher to lower?

1. A.Phylum – Class – Order – Family – Genus
2. B.Phylum – Class – Family – Order – Genus
3. C.Family – Order – Class – Species – Genus
4. D.Class – Family – Order – Species – Genus

Which one of the following statements about meristematic tissues in plants is correct?

1. A.These are dead tissues and form wood
2. B.They provide flexibility to plant due to their thickened walls
3. C.These are present in the bark of a tree only
4. D.Growth occurs in plants due to division of cells of these tissues

Which one of the following elements is needed in the human body to transfer electrical signals by nerve cells?

1. A.Lithium
2. B.Sodium
3. C.Rubidium
4. D.Caesium

Who among the following first discovered cell?

1. A.Robert Brown
2. B.Robert Hooke
3. C.Leeuwenhoek
4. D.Rudolf Virchow

Which one of the following group of organisms forms a food chain?

1. A.Grass, human and fish
2. B.Grass, goat and human
3. C.Tree, tree cutter and tiger
4. D.Goat, cow and human

Which one of the following types of tissues will have contractile proteins?

1. A.Nervous tissue
2. B.Muscle tissue
3. C.Bone tissue
4. D.Blood tissue

If by an unknown accident the acid secreting cells of the stomach wall of an individual are damaged, digestion of which one of the following biomolecule will be affected to a greater extent?

1. A.Protein only
2. B.Lipid
3. C.Carbohydrate only
4. D.Protein and Carbohydrate

Which one of the following statements is not correct?

1. A.Human eye is a refracting system containing a diverging lens.
2. B.The retina of the human eye contains millions of light sensitive cells, called rods and cones, which convert the light into electrical messages.
3. C.Every image that is focused on the retina is upside down.
4. D.We need both eyes to judge the relative positions of objects accurately.

The principal use of hydrofluoric acid is

1. A.in etching glass
2. B.as a bleaching agent
3. C.as an extremely strong oxidizing agent
4. D.in the preparation of strong organic fluorine compounds

Which one of the following vitamins has a role in blood clotting?

1. A.Vitamin A
2. B.Vitamin D
3. C.Vitamin E
4. D.Vitamin K

The term ‘Probiotic’ is applied to

1. A.Organic food
2. B.Antacid
3. C.Antibiotic
4. D.Live microbial food supplement

Tendons through which muscles are connected to bones are tightly compacted bundles of which one of the following long fibrous protein?

1. A.Fibrin
2. B.Collagen
3. C.Elastin
4. D.Cellulose

Which one of the following is the scientific name of the causal organism of elephantiasis?

1. A.Ascaris lumbricoides
2. B.Culex pipiens
3. C.Wuchereria bancrofti
4. D.Fasciola hepatica

Which one of the following statements about microbes is not correct?

1. A.They are used in sewage treatment plants.
2. B.They are used in industrial fermenters for the production of beverages.
3. C.No antibiotic has been obtained from any microbe.
4. D.They are used to get many bioactive molecules for the treatment of diseases.

Golden rice is a genetically-modified crop plant where the incorporated gene is meant for biosynthesis of

1. A.Omega-3 fatty acids
2. B.Vitamin A
3. C.Vitamin B
4. D.Vitamin C