NEET Biology: Medical Entrance Biology Questions and Answers

Useful for Medical Entrance Exams: AIPMT / AFMC /JIPMER / AIIMS / JIPMER /Manipal UGET / CMC Vellore / AMU/ BHU

Multiple Choice Questions on Plant Physiology

1. The closure of lid of pitcher in Nepenthes is
A) A turgor movement 
B) A paratonic movement
C) A tropic movement 
D) An autonomic movement

2. Organelles involved in photorespiration are
A) Mitochondria, chloroplasts and ribosomes
B) Mitochondria, chloroplasts and peroxisomes
C) Mitochondria, nucleus and ribosomes
D) Mitochondria, peroxisomes and glyoxisomes

3. A system of growing plants with their roots supplied with moisture in the air

A) Hydroponics
B) Aeroponics
C) Bionomics
D) Geonomics

4.Oxidative phosphorylation is a process that
A) Occurs during respiration
B) Occurs during photosynthesis
C) Occurs in the thylakoid membrane
D) Involves PS I and PS II

5.In eukaryotes ATP-Synthase enzyme involved in respiration is in the
A) Cytoplasam 
B) Mitochondrial matrix
C) Oxysomes 
D) Quantasomes

6.The equilibrium attained between the electric potential and concentration gradient
in a closed system with two compartments separated by a semi-permeable
membrane
A) Hardy-Weinberg equilibrium
B) Donnan equilibrium
C) Maxwell-Boltzmann equilibrium
D) Michaelis-Menten equilibrium

7. Molecular formula of chlorophyll a is
chlorophyll a

A) C55H70O5N4Mg 
B) C55H72O6N4Mg
C) C55H70O6N4Mg 
D) C55H72O5N4Mg

8.The movement of solutes in the phloem is mainly
A) Lateral 
B) Acropetal
C) Basipetal 
D) Centripetal

9. The first stable compound in Hatch and Slack cycle is
A) Pyruvic acid 
B) Malic acid
C) Citric acid 
D) Oxalo acetic acid

10. Q10 refers to
A) Quantum recharge
B) Respiratory coefficient
C) A temperature coefficient
D) Photosynthetic active radiation (PAR) coefficient
Answers:
1. B) A paratonic movement
2. B) Mitochondria, chloroplasts and peroxisomes
3. B) Aeroponics (Refer: Aeroponics vs Hydroponics)
4. A) Occurs during respiration
5. C) Oxysomes 
6. B) Donnan equilibrium
7.  D) C55H72O5N4Mg
8. C) Basipetal 
9. D) Oxalo acetic acid
10. C) A temperature coefficient
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BCECE Medical Entrance Biology Previous Question Paper

1. Total number of pairs of cranial nerves in human is
a) 12
b) 10
c) 6
d) 20

2. The target organ for vassopressin is
a) gonad
b) kidneys
c) thyroid glands
d)mammary glands

3. Dahlia propagated through

a) roots
b) stem
c) bud
d)leaf

4. Suspension of plant growth due to exogenous control is called
a) vivipary
b) dormacy
c) germination
d)quiescence

5. These induce production of enzyme during seed germination
a)auxins
b)cytokinins
c)ethylene
d)gibberellins

6. Many xerophytes accumulate this in response to stress
a)glucose
b)proline
c)lysine
d)fatty acids

7.Whales show this adaptation strategy
a)mimicry
b)migration
c)hibernation
d)camouflage

8. The bone of the knee cap is called
a)tibia
b)femur
c)fibula
d)patella

9. Osetoporosis is a disorder of
a) kidney
b) muscle
c) bones
d) heart

10. Smell is a function of this lobe
a) frontal
b) parietal
c) occipital
d) temporal

Answers
1. a) 12
2. b) kidneys
3. a) roots
4. d)quiescence
5. d)gibberellins
6. b)proline
7. b)migration
8. d)patella
9. c) bones
10. d)temporal 
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AIPMT Biology 2014 Questions and Answers (1-11)

1. Which one of the following shows isogamy with non-flagellated gametes?
a) Sargassum
b) Ectocarpus
c) Ulothrix
d) Spirogyra


2. Five kingdom system of classification suggested by R.H. Whittaker is not based on
a) Presence or absence of a well defined nucleus
b) Mode of reproduction
c) Mode of nutrition
d) Complexity of body organization
 image
3. Which one of the following fungi contains hallucinogens?
a) Morchella esculenta
b) Amanita muscaria
c) Neurospora sp.
d) Ustilago sp.

4. Archaebacteria differ from eubacteria in
a) Cell membrane structure
b) Mode of nutrition
c) Cell shape
d) Mode of reproduction

5. Which one of the following is wrong about Chara?
a) Upper oogonium and lower round antheridium
b) Globule and nucule present on the same plant
c) Upper antheridium and lower oogonium
d) Globule is male reproductive structure

6. Which of the following is responsible for peat formation?
a) Marchantia
b) Riccia
c) Funaria
d) Sphagnum


7. Placenta and pericarp are both edible portions in
a) Apple
b) Banana
c) Tomato
d) Potato


8. When the margins of sepals or petals overlap one another without any particular direction, the
condition is termed as
a) Vexillary
b) Imbricate
c) Twisted
d) Valvate

9. You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?
a) Secondary xylem
b) Secondary phloem
c) Protoxylem
d) Cortical cells

10. Which one of the following statements is correct?
a) The seed in grasses is not endospermic
b) Mango is a parthenocarpic fruit
c) A proteinaceous aleurone layer is present in maize grain
d) A sterile pistil is called a staminode

Learn more: AIPMT Biology (2014)
Questions & Answers:  11-20 21-30 / 31-40 / 41-50 51-60 / 61-70 / 71-80 81-90
Answers
1. d) Spirogyra
2. a) Presence or absence of a well defined nucleus
3. b) Amanita muscaria
4. a) Cell membrane structure
5. c) Upper antheridium and lower oogonium
6. d) Sphagnum
7. c) Tomato
8. b) Imbricate
9. c) Protoxylem
10. c) A proteinaceous aleurone layer is present in maize grain
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2014 AIPMT Biology Questions and Answers (11-20)

11. Tracheids differ from other tracheary elements in :
a) Having casparian strips
b) Being imperforate
c) Lacking nucleus
d) Being lignified
 
12. An example of edible underground stem is
a) Carrot
b) Groundnut
c) Sweet potato
d) Potato
 
13. Which structures perform the function of mitochondria in bacteria?
a) Nucleoid
b) Ribosomes
c) Cell wall
d) Mesosomes
 
14. The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as
a) Microtubules
b) Microfilaments
c) Intermediate filaments
d) Lamins
 
15. The osmotic expansion of a cell kept in water is chiefly regulated by
a) Mitochondria
b) Vacuoles
c) Plastids
d) Ribosomes

16. If 20 J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain?                                          
                              Plant –> Mice –> Snake ->Peacock
a) 0.02 J
b) 0.002 J
c) 0.2 J
d) 0.0002 J

17. A scrubber in the exhaust of a chemical industrial plant removes 
a) Gases like sulphur dioxide
b) Particulate matter of the size 5 micrometer or above
c) Gases like ozone and methane
d) Particulate matter of the size 2.5 micrometer or less

18.  Given below is the representation of the extent of global diversity of invertebrates. What groups the four portions (A-D) represent respectively?










19. Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks


20. Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other extremely cold northern regions move to a) Western Ghat
b) Meghalaya
c) Corbett National Park
d) Keolado National Park
Learn more: AIPMT Biology (2014)
Questions & Answers: 1-11 21-30 / 31-40 / 41-50 51-60 / 61-70 / 71-80 81-90
Answers
11. b) Being imperforate
12. d) Potato
13. d) Mesosomes
14. b) Microfilaments
15. b) Vacuoles
16. a) 0.02 J
17. a) Gases like sulphur dioxide
18. d) Insects- Molluscs –Crustceans-other animal groups
19.c) Detritus- Rock minerals- Producers-Litter fall
20. d) Keolado National Park
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AIPMT Biology Questions and Answers 2014 (21-30)

21. Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of : 
a) Analogous organs
b) Adaptive radiation
c) Homologous organs
d) Convergent evolution


22. Which one of the following are analogous structures
a) Wings of bat and wings of pigeon
b) Gills of prawn and lungs of man
c) Thorns of Bougainvillea and tendrils of Cucurbita
d) Flippers of dolphin and legs of horse

23. Which is the particular type of drug that is obtained from the plant whose one flowering branch is shown below?
Datura plant
a) Hallucinogen
b) Depressant
c) Stimulant
d) Pain-killer

24. What gases are produced in anaerobic sludge digesters? 
a) Methane and CO2 only
b) Methane, hydrogen sulphide and CO2
c) Methane, hdyrogen sulphide and O2
d) Hydrogen sulphide and CO2

25. To obtain virus-free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken? 
a) Apical meristem only
b) Palisade parenchyma
c) Both apical and axillary meristems
d) Epidermis only

26. Commonly used vectors for human genome sequencing are 
a) T-DNA
b) BAC and YAC
c) Expression Vectors
d) T/A Cloning Vectors

27. During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C? 
a) G0 and G1
b) G1 and S
c) Only G2
d) G2 and M

28. Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly cut coleoptile stumps. Of what significance is this experiment? 
a) It made possible the isolation and exact identification of auxin
b) It is the basis for quantitative determination of small amounts of growth-promoting substances
c) It supports the hypothesis that IAA is auxin
d) It demonstrated polar movement of auxins

29. Deficiency symptoms of nitrogen and potassium are visible first in 
a) Senescent leaves
b) Young leaves
c) Roots
d) Buds

30. Match the following and select the correct answer
Column I             Column II 

a. Centriole         (i) Infoldings in mitochondria
b. Chlorophyll     (ii) Thylakoids
c. Cristae            (iii) Nucleic acids
d. Ribozymes      (iv) Basal body cilia or flagella
      (a) (b) (c) (d)
(A) (iv) (ii) (i) (iii)
(B) (i) (ii) (iv) (iii)
(C) (i) (iii) (ii) (iv)
(D) (iv) (iii) (i) (ii)

Learn more: AIPMT Biology (2014)
Questions & Answers: 1-11 / 11-20 31-40 / 41-50 51-60 / 61-70 / 71-80 81-90
Answers
21. c) Homologous organs
22. b) Gills of prawn and lungs of man
23. a) Hallucinogen
24. b) Methane, hydrogen sulphide and CO2
25.c) Both apical and axillary meristems
26.b) BAC and YAC
27. c) Only G2
28. a) It made possible the isolation and exact identification of auxin
29. a) Senescent leaves
30. (A)
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