Skeleton, Movement and Locomotion - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of bones, joints, muscles, and biomechanics.
Respiratory System - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of lung capacity, gas exchange, and respiratory pathways.
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Practice questions testing deep understanding of the integumentary system, thermoregulation, and skin layers.
Q1. During an intense workout on a hot day, your face becomes visibly flushed (red) and you start sweating profusely. Explain the two biological mechanisms the skin is using here to prevent your core body temperature from rising to dangerous levels.
Q2. Assertion (A): People living in equatorial regions naturally have higher amounts of melanin in their skin compared to people living near the poles. Reason (R): Melanin acts as a natural sunscreen, absorbing harmful Ultraviolet (UV) radiation from the intense equatorial sun and protecting the DNA in underlying skin cells from damage.
/Class-9/Competency-Based-Questions/5_5_Skin_Structure_and_Function_CBQ.mdxSkeleton, Movement and Locomotion - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of bones, joints, muscles, and biomechanics.
Respiratory System - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of lung capacity, gas exchange, and respiratory pathways.