Biology · NDA previous year questions

Which one among the following statements is correct?

1. A.All arteries carry oxygenated blood
2. B.All veins carry oxygenated blood
3. C.Except the pulmonary artery, all other arteries carry oxygenated blood
4. D.Except the pulmonary vein, all other veins carry oxygenated blood

What are cold-blooded animals?

1. A.Animals with blood without haemoglobin
2. B.Animals who are not ferocious
3. C.Animals whose body temperature remains constant
4. D.Animals whose body temperature varies according to the temperature of atmosphere

Sickle-cell anaemia is a disease caused due to the abnormality in

1. A.white blood cells
2. B.red blood cells
3. C.thrombocytes
4. D.blood plasma composition

Carbohydrates are stored in plants and animals in the form of

1. A.cellulose and glucose respectively
2. B.starch and glycogen respectively
3. C.starch and glucose respectively
4. D.cellulose and glycogen respectively

Certain parts of a plant can be bent easily without breaking. This flexibility in certain parts, like leaf and stem, can be attributed to the abundance of

1. A.parenchyma
2. B.collenchyma
3. C.sclerenchyma
4. D.xylem and phloem

Which of the following is not a micronutrient for a plant?

1. A.Iron
2. B.Magnesium
3. C.Molybdenum
4. D.Manganese

Cell membrane is selectively permeable because

1. A.it is made up of selected organic molecules
2. B.it does not allow transport of some substances from region of higher concentration to the region of lower concentration
3. C.the movement of organic molecules occurs only at specific concentration
4. D.it allows the movement of certain molecules in and out of the cell while the movement of other molecules is prevented

The main function of the inner bark of a woody plant is to

1. A.transport minerals and water from the roots to the leaves
2. B.act as a membrane impermeable to water and gas
3. C.transport food from the leaves to the other parts of the plant
4. D.protect the plant from herbivorous animals

A man was trapped in a room of a building which was up in flames. Fire-fighters had to break window panes which were filled in smoke to take him out. Once the injured person is out, he should be observed/treated for

1. A.Superficial burn wound
2. B.Electric burn wound
3. C.Respiratory burn
4. D.Internal organ injury

MCQ (More than One Correct Answer) AIDS is caused by Human Immunodeficiency Virus (HIV) which is

1. A.Retro virus
2. B.Lente virus
3. C.Arbo virus
4. D.Immune virus

With regard to animal breeding, which one among the following is not correct?

1. A.In-breeding: Mating of more closely related animals within the same breed for 1 – 2 generations
2. B.Out-breeding: Breeding of unrelated animals of the same breed without common ancestors for 4 – 6 generations
3. C.Cross-breeding: Superior males of one breed are mated with superior females of another breed
4. D.Out-crossing: Offspring is called an ‘out-cross’

Which one among the following statements regarding heart sound is correct?

1. A.Heart sounds are caused by the internal blood flow inside the heart
2. B.Heart sounds are caused by the external blood flow outside the heart
3. C.Heart sounds are caused by opening and closing of heart valves
4. D.Normal sounds are called ‘murmurs’

MCQ (More than One Correct Answer) Which one among the following cell organelles is semi-permeable?

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

Which one among the following is not a source of renewable energy?

1. A.Hydroelectricity
2. B.Solar energy
3. C.Fuel cell
4. D.Wind energy

Which one of the following organs breaks fat to produce cholesterol?

1. A.Intestine
2. B.Liver
3. C.Lungs
4. D.Kidneys

An individual whose blood type is B may in an emergency donate blood to a person whose blood type is:

1. A.B or A
2. B.AB or A
3. C.A or O
4. D.AB or B

Venkataraman Ramakrishnan was jointly awarded Nobel Prize in Chemistry in the year 2009 for the:

1. A.theory of electron transfer.
2. B.studies of the structure and function of the ribosome.
3. C.palladium catalyzed cross couplings in organic synthesis.
4. D.work in the area of olefin metathesis.

Which one among the following statements regarding cell is not correct?

1. A.Shape and size of cells are related to specific function
2. B.Some cells have changing shapes
3. C.Each cell has its own capacity to perform
4. D.Same type of cells are present in all body tissues

Which one among the following Indian scientists proposed a theory for long distance transport of water in plants?

1. A.J.C. Bose
2. B.Birbal Sahni
3. C.P. Maheshwari
4. D.N.S. Parihar

Statement I : Oxidation in our body cell releases dangerous free radicals Statement II : Our body itself produces anti-oxidants to neutralize harmful free radicals

1. A.Both the statements are individually true and statement II is the correct explanation of statement I
2. B.Both the statements are individually true but statement II is not the correct explanation of statement I
3. C.Statement I is true but Statement II is false
4. D.Statement I is false but statement II is true

Consider the following items 1. Proteins, Carbohydrates, and Fats 2. Vitamins 3. Minerals 4. Water Which of the above are considered as the constituents of food?

1. A.1, 2 and 4 only
2. B.1 and 3 only
3. C.2 and 3 only
4. D.1, 2, 3 and 4

Statement II : Photosynthesis is the process of converting water into food using sunlight and oxygen

1. A.Both the statements are individually true and statement II is the correct explanation of statement I
2. B.Both the statements are individually true but statement II is not the correct explanation of statement I
3. C.Statement I is true but statement II is false
4. D.Statement I is false but statement II is true

Statement I : Reproduction is the process by which living organisms produce young ones of their species. There are different forms of reproduction Statement II : Sex organs, male and female, are mandatory for reproduction

1. A.Both the statements are individually true and statement II is the correct explanation of statement I
2. B.Both the statements are individually true but statement II is not the correct explanation of statement I
3. C.Statement I is true but statement II is false
4. D.Statement I is false but statement II is true

Statement I : Human beings have 23 pair of chromosomes, one of which is the sex chromosome and the remaining 22 autosomes. The X-linked diseases are related to mutations on a sex chromosome Statement II : Colour blindness results from a mutation in X chromosome

1. A.Both the statements are individually true and statement II is the correct explanation of statement I
2. B.Both the statements are individually true but statement II is not the correct explanation of statement I
3. C.Statement I is true but statement II is false
4. D.Statement I is false but statement II is true

Which one among the following statements regarding the properties of mixtures and compounds is not correct?

1. A.A mixture shows the properties of its constituents but the properties of a compound are entirely different from its constituents
2. B.A mixture may be homogeneous or heterogeneous but a compound is a homogeneous substance
3. C.The constituents of a mixture can be separated by physical methods but those of a compound can not be separated by physical method
4. D.Energy is either absorbed or evolved during the preparation of a mixture but not in the preparation of a compound