Pre-Admission Test in Agriculture Universities-Practice-4

Prepare for Agriculture University entry tests in Pakistan with practice MCQs covering Biology, Chemistry, Physics, Mathematics, English, and Agriculture, with answers and explanations.

Practice questions

1 Which scientist proposed the theory of evolution by natural selection?
- Gregor Mendel
- Charles Darwin
- Louis Pasteur
- Robert Hooke
2 Which structure connects a muscle to a bone?
- Ligament
- Tendon
- Cartilage
- Synovial membrane
3 Which organelle is the principal site of aerobic cellular respiration?
- Ribosome
- Mitochondrion
- Golgi apparatus
- Vacuole
4 Which phase of mitosis involves the separation of sister chromatids?
- Prophase
- Metaphase
- Anaphase
- Telophase
5 Which blood group is commonly described as the universal red blood cell donor when Rh compatibility is considered?
- AB positive
- A positive
- O negative
- B negative
6 Which part of the eye controls the amount of light entering it?
- Retina
- Iris
- Cornea
- Optic nerve
7 Which cells are primarily responsible for producing antibodies?
- Red blood cells
- Plasma cells
- Platelets
- Neutrophils
8 Which structure is the basic functional unit of the kidney?
- Neuron
- Nephron
- Alveolus
- Villus
9 Which enzyme begins the digestion of starch in the human mouth?
- Pepsin
- Salivary amylase
- Trypsin
- Lipase
10 Which part of a neuron receives most incoming signals?
- Axon terminal
- Dendrites
- Myelin sheath
- Node of Ranvier
11 Which plant tissue transports manufactured sugars from leaves to other parts?
- Xylem
- Phloem
- Epidermis
- Sclerenchyma
12 Which gas is released during photosynthesis?
- Carbon dioxide
- Nitrogen
- Oxygen
- Methane
13 Which type of reproduction requires only one parent and no fusion of gametes?
- Sexual reproduction
- Asexual reproduction
- Cross-pollination
- Double fertilisation
14 Which molecule carries amino acids to the ribosome during translation?
- mRNA
- tRNA
- DNA
- ATP synthase
15 Which part of the human brain controls vital functions such as breathing and heart rate?
- Cerebrum
- Medulla oblongata
- Cerebellum
- Hippocampus
16 Which hormone helps regulate the body's metabolic rate?
- Thyroxine
- Insulin
- Oxytocin
- Melatonin
17 Which type of cell division is responsible for growth and tissue repair?
- Meiosis
- Mitosis
- Fertilisation
- Conjugation
18 Which human organ produces bile?
- Pancreas
- Liver
- Stomach
- Small intestine
19 Which structure in a plant seed develops into the shoot?
- Radicle
- Plumule
- Testa
- Hilum
20 Which process describes the movement of water through a selectively permeable membrane from higher water potential to lower water potential?
- Active transport
- Osmosis
- Endocytosis
- Transcription
21 Which of the following is a communicable disease caused by a virus?
- Diabetes mellitus
- Influenza
- Scurvy
- Rickets
22 Which type of organism obtains nutrients by living on or inside a host and harming it?
- Mutualist
- Parasite
- Producer
- Decomposer only
23 Which cells in plants contain chloroplasts in large numbers and carry out much of photosynthesis?
- Root cap cells
- Palisade mesophyll cells
- Xylem vessels
- Cork cells
24 What is the main role of stomata in leaves?
- Absorbing minerals from soil
- Gas exchange and regulation of water loss
- Producing pollen
- Transporting sugars through roots
25 Which molecule stores hereditary information in most living organisms?
- DNA
- Cellulose
- Glycogen
- Triglyceride
26 Which vitamin deficiency can cause scurvy?
- Vitamin A
- Vitamin B12
- Vitamin C
- Vitamin K
27 Which human blood component carries most oxygen?
- White blood cells
- Platelets
- Haemoglobin in red blood cells
- Blood plasma proteins
28 Which evolutionary process describes the random change in allele frequencies, especially in small populations?
- Natural selection
- Genetic drift
- Artificial selection
- Gene expression
29 Which plant hormone promotes fruit ripening?
- Auxin
- Ethylene
- Cytokinin
- Abscisic acid
30 What is the primary role of decomposers in an ecosystem?
- Capturing sunlight
- Recycling nutrients from dead matter
- Producing all atmospheric oxygen
- Preventing all competition
31 What is the atomic number of an element?
- Number of neutrons
- Number of protons
- Number of protons plus neutrons
- Number of electron shells
32 Which element has the electronic configuration 2,8,7?
- Neon
- Chlorine
- Argon
- Sulphur
33 Which of the following is a strong base?
- Sodium hydroxide
- Ethanoic acid
- Carbonic acid
- Ammonium chloride
34 What is the chemical formula of ammonia?
- NH₄
- NH₃
- NO₂
- N₂H₄
35 Which gas is commonly used in fire extinguishers because it does not support combustion and can displace oxygen?
- Oxygen
- Carbon dioxide
- Hydrogen
- Chlorine
36 What is the approximate molar mass of oxygen gas, O₂?
- 8 g/mol
- 16 g/mol
- 32 g/mol
- 64 g/mol
37 Which element is the most abundant in Earth's atmosphere by volume?
- Oxygen
- Nitrogen
- Carbon dioxide
- Argon
38 What is the usual oxidation number of hydrogen in compounds with non-metals?
- −2
- −1
- +1
- +2
39 Which method is most suitable for separating an insoluble solid from a liquid?
- Filtration
- Fractional distillation
- Chromatography
- Sublimation
40 Which of the following is an example of a chemical change?
- Melting ice
- Breaking glass
- Rusting iron
- Dissolving sugar in water
41 What is the chemical formula of sulphuric acid?
- H₂SO₃
- H₂SO₄
- HSO₄
- H₂S
42 Which type of reaction releases heat to the surroundings?
- Endothermic
- Exothermic
- Photolytic only
- Reversible only
43 Which of these is a saturated hydrocarbon?
- Ethene
- Ethyne
- Ethane
- Benzene
44 Which element is the main constituent of organic compounds as traditionally defined in introductory chemistry?
- Carbon
- Sodium
- Calcium
- Helium
45 What is the approximate pH of pure water at 25°C?
- 2
- 5
- 7
- 12
46 Which particle is emitted during beta-minus radioactive decay?
- Proton
- Electron
- Helium nucleus
- Neutron only
47 Which element is commonly added to iron to produce stainless steel?
- Chromium
- Mercury
- Lead
- Calcium
48 Which gas is produced when an acid reacts with a carbonate?
- Hydrogen
- Carbon dioxide
- Nitrogen
- Ammonia
49 What is the principal solvent in an aqueous solution?
- The dissolved solid
- Water
- The precipitate
- The catalyst
50 Which term describes compounds that have the same molecular formula but different arrangements of atoms?
- Isomers
- Ions
- Polymers
- Catalysts
51 What is the SI unit of power?
- Joule
- Watt
- Newton
- Pascal
52 A body travels 100 metres in 20 seconds. What is its average speed?
- 2 m/s
- 4 m/s
- 5 m/s
- 10 m/s
53 Which law states that every action has an equal and opposite reaction?
- Newton's first law
- Newton's second law
- Newton's third law
- Kepler's first law
54 What is the SI unit of electrical resistance?
- Volt
- Ampere
- Ohm
- Farad
55 Which lens is thicker at the centre than at the edges?
- Concave lens
- Convex lens
- Cylindrical concave lens only
- Plane glass
56 What happens to the gravitational force between two masses when the distance between their centres doubles, with the masses unchanged?
- It doubles
- It becomes four times as great
- It becomes half
- It becomes one-quarter
57 Which instrument is used to measure atmospheric pressure?
- Ammeter
- Barometer
- Calorimeter
- Voltmeter
58 What is the approximate speed of light in a vacuum?
- 3 × 10⁴ m/s
- 3 × 10⁶ m/s
- 3 × 10⁸ m/s
- 3 × 10¹⁰ m/s
59 Which form of heat transfer can occur through a vacuum?
- Conduction
- Convection
- Radiation
- Conduction and convection equally
60 What is the momentum of a 4 kg body moving at 3 m/s?
- 7 kg·m/s
- 12 kg·m/s
- 16 kg·m/s
- 24 kg·m/s
61 Which quantity is measured in hertz?
- Force
- Frequency
- Energy
- Pressure
62 What is the SI unit of work?
- Watt
- Newton
- Joule
- Ampere
63 Which type of mirror is commonly used as a rear-view mirror in vehicles?
- Plane mirror
- Concave mirror
- Convex mirror
- Parabolic mirror only
64 If the voltage across a resistor is 12 V and its resistance is 4 Ω, what current flows through it?
- 2 A
- 3 A
- 4 A
- 6 A
65 Which physical quantity is a measure of the inertia of a body?
- Speed
- Mass
- Acceleration
- Temperature
66 What happens to the kinetic energy of a body when its speed doubles, while its mass remains constant?
- It doubles
- It becomes three times
- It becomes four times
- It remains unchanged
67 Which phenomenon explains the bending of light when it passes from one medium into another?
- Reflection
- Refraction
- Diffraction
- Polarisation
68 Which instrument measures electric current?
- Voltmeter
- Ammeter
- Barometer
- Thermometer
69 What is the approximate value of acceleration due to gravity near Earth's surface?
- 4.9 m/s²
- 8.0 m/s²
- 9.8 m/s²
- 12.5 m/s²
70 Which form of energy is stored in a stretched spring?
- Chemical energy
- Elastic potential energy
- Nuclear energy
- Sound energy
71 What is 25% of 240?
- 40
- 50
- 60
- 80
72 Solve: 3x + 5 = 20.
- 3
- 5
- 7
- 10
73 What is the area of a rectangle with length 12 cm and width 5 cm?
- 17 cm²
- 34 cm²
- 60 cm²
- 120 cm²
74 What is the value of 2⁵?
- 10
- 16
- 25
- 32
75 A bag contains 3 red balls and 7 blue balls. What is the probability of selecting a red ball at random?
- 3/7
- 3/10
- 7/10
- 1/2
76 What is the average of 8, 12, 16, and 20?
- 12
- 14
- 16
- 18
77 If a triangle has angles of 60° and 70°, what is its third angle?
- 40°
- 50°
- 60°
- 70°
78 Simplify: 3/4 + 1/8.
- 4/12
- 5/8
- 7/8
- 1
79 A vehicle travels 180 km in 3 hours. What is its average speed?
- 45 km/h
- 50 km/h
- 60 km/h
- 90 km/h
80 What is the circumference of a circle with radius 7 cm? Use π = 22/7.
- 22 cm
- 44 cm
- 49 cm
- 154 cm
81 If 2x - 5 = 9, what is x?
- 2
- 5
- 7
- 9
82 What is the value of 1/3 + 1/6?
- 1/9
- 1/2
- 2/9
- 2/3
83 A bag contains 4 red balls and 6 blue balls. What is the probability of randomly selecting a red ball?
- 1/5
- 2/5
- 3/5
- 4/5
84 Find the simple interest on Rs. 2,000 at 5% per year for 3 years.
- Rs. 100
- Rs. 200
- Rs. 300
- Rs. 500
85 If the ratio of boys to girls is 3:2 and there are 25 students, how many are boys?
- 10
- 12
- 15
- 20
86 Choose the synonym of “accurate.”
- Incorrect
- Precise
- Vague
- Careless
87 Choose the antonym of “temporary.”
- Brief
- Short-lived
- Permanent
- Occasional
88 Choose the correct sentence.
- Neither of the answers are correct.
- Neither of the answers is correct.
- Neither answers is corrects.
- Neither of answer are correct.
89 Choose the correct preposition: “The farmer depends ___ rainfall.”
- at
- on
- from
- with
90 Choose the correctly spelled word.
- Agriculture
- Agriculter
- Agricultur
- Agreculture
91 What does “feasible” mean?
- Impossible
- Practical and possible
- Uncertain in every case
- Unnecessary
92 Change to reported speech: He said, “I am busy.”
- He said that I am busy.
- He said that he was busy.
- He says that he was busy yesterday.
- He said he is being busy.
93 Choose the correct word: “The principal gave me useful ___.”
- Advices
- Advice
- Advises
- Advising
94 What does the idiom “hit the nail on the head” mean?
- Make a serious mistake
- Describe exactly what is right
- Avoid answering a question
- Work very slowly
95 Choose the correct completion: “By the time we arrived, the lecture ___.”
- begins
- has begin
- had begun
- will begin
96 Which soil type generally retains the greatest amount of water?
- Coarse sand
- Gravel
- Clay
- Coarse sand mixed with gravel
97 Which nutrient is especially important for root development and energy transfer in plants?
- Phosphorus
- Sodium
- Chlorine
- Aluminium
98 Which agricultural practice involves growing different crops on the same land in a planned sequence over seasons?
- Monocropping only
- Crop rotation
- Overgrazing
- Land levelling
99 A seed lot contains 200 seeds, of which 170 germinate. What is the germination percentage?
- 75%
- 80%
- 85%
- 90%
100 Which agricultural practice helps maintain soil fertility by adding decomposed organic matter?
- Applying only non-nutrient sand
- Incorporating well-decomposed compost
- Burning all crop residues
- Removing all plant matter from the field