Biology · NDA previous year questions

In prokaryotic organisms, nuclear region is not surrounded by a membrane. This undefined nuclear region is known as

1. A.Nucleic acid
2. B.Nucleoid
3. C.Nucleolus
4. D.Nucleosome

Which one of the following plant tissues has dead cells ?

1. A.Epidermis
2. B.Parenchyma
3. C.Collenchyma
4. D.Sclerenchyma

Which one of the following statements regarding Bleaching powder and D.D.T. is correct ?

1. A.Both are inorganic compounds
2. B.Both are organic compounds
3. C.Both contain chlorine
4. D.Both contain calcium

Which one of the following statements regarding Ohm’s law is not correct?

1. A.Ohm’s law is an assumption that current through a conductor is always directly proportional to the potential difference applied to it.
2. B.A conducting device obeys Ohm’s law when the resistance of a device is independent of magnitude and polarity of applied potential difference.
3. C.A conducting material obeys Ohm’s law when the resistance of material is independent of the magnitude and direction of applied electric field.
4. D.All homogeneous materials obey Ohm’s law irrespective of whether the field is within range or strong.

Blood is a type of

1. A.Epithelial tissue
2. B.Muscular tissue
3. C.Nervous tissue
4. D.Connective tissue

Mitochondria are able to produce their own

1. A.Nucleus
2. B.Proteins
3. C.Chloroplasts
4. D.Digestive enzymes

Which one of the following statements is correct?

1. A.Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres.
2. B.Flexibility in plants is due to sclerenchyma.
3. C.Parenchyma have no intercellular spaces.
4. D.Xylem consists of sieve plate, sieve tube and companion cells.

Thyroid gland produces a hormone called “Thyroxine” which

1. A.controls blood glucose levels.
2. B.controls ovulation.
3. C.controls metabolic rate.
4. D.maintains pregnancy.

Which one of the following is a bacterium that causes disease in the human body?

1. A.Varicella zoster
2. B.Trypanosoma gambiense
3. C.Salmonella typhi
4. D.Plasmodium falciparum

Which one of the following statements regarding viruses is not true?

1. A.Viruses need living cells to reproduce.
2. B.All viruses are parasites.
3. C.Viruses can synthesize their food through photosynthesis.
4. D.Viruses are similar to chemical substances outside the host.

Which one of the following diseases may be caused by the deficiency of vitamin C?

1. A.Rickets
2. B.Rabies
3. C.Hepatitis
4. D.Scurvy

Which one of the following is an organic acid ?

1. A.Hydrochloric acid
2. B.Nitric acid
3. C.Acetic acid
4. D.Sulphuric acid

Which one of the following cell organelles does NOT possess nucleic acid?

1. A.Nucleolus
2. B.Chloroplast
3. C.Ribosome
4. D.Plasma Membrane

Which one of the following cell organelles does NOT possess its own genetic material encoding proteins?

1. A.Ribosome
2. B.Nucleus
3. C.Mitochondria
4. D.Chloroplast

Which one of the following is NOT a component of conducting tissue in plants?

1. A.Fibres
2. B.Tracheids
3. C.Pericycle
4. D.Sieve tubes

Which one of the following organisms has vascular tissues?

1. A.Cladophora
2. B.Penicillium
3. C.Marsilea
4. D.Anabaena

Which one of the following organisms represents the primary consumer category in an ecosystem?

1. A.Caterpillar
2. B.Crabapple tree
3. C.Frog
4. D.Sparrowhawk

Which one of the following statements regarding Electrocardiogram is correct?

1. A.Electrocardiogram is graphical representation of electrical activity of cornea
2. B.Electrocardiogram is graphical representation of activity of kidney
3. C.Electrocardiogram is graphical representation of activity of brain
4. D.Electrocardiogram is graphical representation of electrical activity of heart

Which one of the following statements regarding Penicillin is correct?

1. A.Penicillin resistant bacteria can store this antibiotic in vacuole
2. B.Penicillin resistant bacteria can degrade this antibiotic by an enzyme called β-lactamase
3. C.Penicillin resistant bacteria can degrade this antibiotic by an enzyme called lactic acid dehydrogenase
4. D.Penicillin is not absorbed by bacteria; so most bacteria are resistant

Which one of the following organelles of mammalian cell is rich in hydrolytic enzymes?

1. A.Mitochondria
2. B.Ribosomes
3. C.Lysosome
4. D.Nucleus

Which one of the following statements regarding Cholera is correct?

1. A.Cholera is a disease that causes loss of memory
2. B.Cholera is a disease of muscles due to consumption of alcohol
3. C.Cholera is a disease due to consumption of contaminated food or water
4. D.Cholera is a genetic disease

Which one of the following is a heterogeneous mixture?

1. A.Hydrochloric acid
2. B.Vinegar
3. C.Milk
4. D.Soda water

Directions : The following six (6) items consist of two statements, Statement I and Statement II. Examine these two statements carefully and select the correct answer using the code given below. Code : Statement I : Phytoplankton produce most of the organic carbon in the ocean. Statement II : Algae are produced in the cold water biome.

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 of the following groups of cellular organelles contains DNA?

1. A.Mitochondria, nucleus, chloroplast
2. B.Mitochondria, Golgi bodies, nucleus
3. C.Mitochondria, plasma membrane, nucleus
4. D.Chloroplast, nucleus, ribosomes

MCQ (More than One Correct Answer) One of the additional functions of Smooth Endoplasmic Reticulum (SER) is

1. A.protein synthesis
2. B.lipid synthesis
3. C.storage of biomolecules
4. D.detoxification of toxic substances