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Cork cells are made impervious to water and gases due to presence of
(a) Cork cells are made impervious to water and gases due to the presence of suberin. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-6/
(a) Cork cells are made impervious to water and gases due to the presence of suberin.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-6/
See lessCommercial fibres like jute and flax are derived from
(b) Commercial fibers like jute and flax are derived from the collenchyma tissue, which provides mechanical support and flexibility to plants. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-6/
(b) Commercial fibers like jute and flax are derived from the collenchyma tissue, which provides mechanical support and flexibility to plants.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-6/
See lessWhat are some common problems faced with bicycles and how can they be fixed?
Bicycles face issues like rusting, loose parts, stiff wheels, and flat tyres. Rust can be cleaned using sandpaper and oil. Loose parts should be tightened with appropriate tools. Wheels that don’t move freely require lubrication. Flat tyres need regular air pressure checks and proper inflation. ReguRead more
Bicycles face issues like rusting, loose parts, stiff wheels, and flat tyres. Rust can be cleaned using sandpaper and oil. Loose parts should be tightened with appropriate tools. Wheels that don’t move freely require lubrication. Flat tyres need regular air pressure checks and proper inflation. Regular maintenance, cleaning, and lubrication can prevent these problems, ensuring smooth and efficient performance.
See lessDescribe the role of rims and tyres in a bicycle.
The rims hold the tyres in place and provide a braking surface for rim brakes. Tyres ensure traction, grip, and cushioning, absorbing shocks from rough roads. Properly inflated tyres reduce rolling resistance, making pedaling easier and increasing efficiency. Together, rims and tyres ensure stabilitRead more
The rims hold the tyres in place and provide a braking surface for rim brakes. Tyres ensure traction, grip, and cushioning, absorbing shocks from rough roads. Properly inflated tyres reduce rolling resistance, making pedaling easier and increasing efficiency. Together, rims and tyres ensure stability, control, and a comfortable ride, preventing skidding and improving the bicycle’s performance on different terrains.
See lessExplain how different simple machines work together in a bicycle.
A bicycle combines multiple simple machines for efficient movement. Pedals work as levers to transfer force, chains and sprockets function as pulleys to transmit power, and wheels and axles reduce friction for smooth riding. Brakes also use the lever principle to slow down the bicycle. These machineRead more
A bicycle combines multiple simple machines for efficient movement. Pedals work as levers to transfer force, chains and sprockets function as pulleys to transmit power, and wheels and axles reduce friction for smooth riding. Brakes also use the lever principle to slow down the bicycle. These machines work together to transform the rider’s effort into motion, making cycling easier, faster, and more energy-efficient.
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