High Order Thinking Skills (HOTs) - 4 - Free MCQ Test with solutions

• a. Roots → (ii) Absorb water and nutrients: Roots absorb water and nutrients from the soil.
• b. Stem → (iii) Transport water and nutrients: The stem transports water and nutrients throughout the plant.
• c. Leaves → (iv) Make food using sunlight: The leaves carry out photosynthesis, making food using sunlight.
• d. Flowers → (v) Reproduction: Flowers are involved in the reproductive process.
• e. Fruits → (i) Store food: Fruits store food for the plant, often after it has been produced in the leaves.

Thus, the correct answer is Option B: (v) (iv) (ii) (i) (iii).

Here is the correct matching of scientific instruments with their uses:

• a. Microscope → (iii) Magnify objects: A microscope is used to magnify very small objects.
• b. Thermometer → (i) Measure temperature: A thermometer is used to measure temperature.
• c. Telescope → (iv) Observe distant objects: A telescope is used to observe objects that are far away.
• d. Stethoscope → (v) Listen to heart sounds: A stethoscope is used by doctors to listen to heartbeats and other body sounds.
• e. Loudspeaker → (ii) Amplify sound: A loudspeaker amplifies sound to make it louder.

Thus, the correct answer is Option A: (iii) (i) (iv) (v) (ii).

(i) The main gas in the Earth's atmosphere is nitrogen: This statement is correct. Nitrogen makes up about 78% of the Earth's atmosphere.

(ii) The heart is an organ that pumps blood: This statement is correct. The heart is responsible for pumping blood throughout the body.

(iii) Humans have four senses: This statement is incorrect. Humans typically have five senses: sight, hearing, taste, touch, and smell.

(iv) The sun rises in the east and sets in the west: This statement is correct. Due to the Earth's rotation, the sun appears to rise in the east and set in the west.

Thus, the correct answer is Option B: (i), (ii), and (iv) only.

(i) It is a celestial body that orbits a planet: The Moon is a celestial body that orbits the Earth.

(ii) It is the force that attracts objects towards the center of the Earth: This is gravity, the force that pulls objects towards the Earth's center.

Thus, the correct answer is Option B: Moon Gravity.

(i) It is a type of animal that gives birth to live young: Mammals are animals that give birth to live young (with some exceptions like monotremes).

(ii) It is a structure that protects the brain: The skull is the structure that protects the brain in vertebrates.

Thus, the correct answer is Option C: Mammal Skull.

(i) It is a change of state from liquid to gas: This describes evaporation, which is the process where a liquid turns into a gas.

(ii) It is the part of the plant where photosynthesis mainly occurs: Leaves are the primary part of the plant where photosynthesis takes place, using sunlight to produce food for the plant.

Thus, the correct answer is Option C: Evaporation Leaf.

(i) It is the body system responsible for transporting blood throughout the body: This refers to the circulatory system, which includes the heart, blood, and blood vessels, responsible for transporting blood and nutrients throughout the body.

(ii) It is the organ that pumps blood: The heart is the organ that pumps blood throughout the body.

Thus, the correct answer is Option C: Circulatory system Heart.

(i) Birds have hollow bones to help them fly: True (T). Birds have hollow bones, which make their bodies lighter and help them fly.

(ii) Sound travels faster in air than in water: False (F). Sound actually travels faster in water than in air because water is denser than air.

(iii) Plants get their green color from chlorophyll: True (T). Chlorophyll is the pigment in plants that gives them their green color and helps with photosynthesis.

(iv) The Moon produces its own light: False (F). The Moon does not produce its own light; it reflects the light from the Sun.

Thus, the correct answer is Option A: T, F, T, F.

Here is the correct matching of body parts and their functions:

• a. Heart → (ii) Pump blood: The heart is responsible for pumping blood throughout the body.
• b. Tongue → (i) Sense of taste: The tongue is responsible for the sense of taste.
• c. Nose → (iv) Smell odors: The nose is responsible for the sense of smell.
• d. Ear → (iii) Hear sounds: The ear is responsible for hearing sounds.
• e. Brain → (v) Balance: The brain helps maintain balance in the body.

Thus, the correct answer is Option A: (ii) (i) (iv) (iii) (v).

• a. Rose — (v) Shrub
  Roses are woody perennial shrubs with multiple stems coming from the base.
• b. Pine — (i) Coniferous
  Pine trees belong to the family Pinaceae, which is a family of conifer trees.
• c. Tulip — (ii) Herbaceous
  Tulips are herbaceous plants, meaning they have non-woody stems and their foliage dies back each year to an underground bulb.
• d. Oak — (iii) Deciduous
  Most oak species are deciduous, shedding their leaves annually in the autumn.
• e. Cactus — (iv) Succulent
  Cacti are succulents, a type of plant adapted to store water in their thickened stems or leaves.