MCQs

Q221: Pollen grains are microscopic structure located in _____ of flower.

• A) Stamen
• B) Anther
• C) Pistil

Q222: Zygote forms after the fusion of different ____?

• A) Gametes
• B) Embryo
• C) Fetus

Q223: Which structure prevents the food from entering the larynx during swallowing?

• A) Epiglottis
• B) Tongue
• C) Oesophagus

Q224: Wavelength symbol “λ” is termed as ____?

• A) Delta
• B) Gamma
• C) Lambda

Q225: Infants (children) should be immunized with BCG (Bacille Calmette-Guerin) vaccines against?

• A) Malaria
• B) Tuberculosis
• C) Measles

Q226: Water has maximum density at _____?

• A) 2°C
• B) 3°C
• C) 4°C

Q227: The _______ is made up of a double helix of two complementary strands.

• A) RNA
• B) Chromosome
• C) DNA

Q228: A chemical process that changes vegetable oil into fat is called ________?

• A) Combustion
• B) Hydrogenation
• C) Hydration

Q229: Area where river meet with sea is?

• A) Estuarine water
• B) Solid water
• C) Fresh water

Q230: A place of living according to particular environment of living things is _____?

• A) Ecosystem
• B) Habitat
• C) Community