Q. What play the most important role in regulating temperature and determining climate on the Earth?
(A) Oceans
(B) Mountains
(C) Deserts
(D) Forests

The answer is: (A) Oceans ☑

Q. In plants, the process of pollination enables
(A) photosynthesis
(B) fertilization
(C) gymnosperm
(D) none of these

The answer is: (B) fertilization ☑

Q. Which of the following enzyme catalyses the hydrolysis of starch into sugars?
(A) Sucrose
(B) Catalase
(C) Maltase
(D) Amylase

The answer is: (D) Amylase ☑

Q. Which of the following is a tissue?
(A) Blood
(B) Lungs
(C) Kidney
(D) Ovary

The answer is: (A) Blood ☑

Q. The position of an element in the Periodic Table is determined by its __________ number.
(A) Electron
(B) Proton
(C) Neutron
(D) Positron

The answer is: (B) Proton ☑

Q. The most abundant element in the Earth’s crust is
(A) Oxygen
(B) Hydrogen
(C) Carbon Dioxide
(D) Silicon

The answer is: (A) Oxygen ☑

Q. Each day human body breathe in ________ liters of air.
(A) 5,000 to 10,000
(B) 10,000 to 15,000
(C) 15,000 to 20,000
(D) 20,000 to 25,000

The answer is: (C) 15,000 to 20,000 ☑