Class 9 Science : Practice Questions and Answers

Adipose tissue stores fat and provides insulation and cushioning.

Bone tissue stores minerals such as calcium and phosphorus.

Parenchyma is a simple permanent tissue involved in storage and photosynthesis.

Vessel elements are important conducting components of xylem.

Tendons connect muscles to bones and help in movement.

Phloem fibers provide mechanical support and strength to plants.

Stomata help in gaseous exchange and regulate water loss through transpiration.

Neurons are specialized cells that transmit electrical signals in the nervous system.

Cardiac muscle is involuntary, striated, and found only in the heart.

Simple squamous epithelium lines blood vessels and allows diffusion of gases and nutrients.

Canal irrigation distributes water through a network of canals to agricultural fields.

Organic farming relies on natural fertilizers and biofertilizers instead of synthetic chemicals.

Crop rotation involves growing different crops in a planned sequence to maintain soil fertility.

Maize is a Kharif crop grown during the rainy season.

Nervous tissue transmits electrical impulses through neurons.

Muscular tissue contracts and relaxes to produce movement.

Xylem transports water and minerals from roots to other parts of the plant.

Apical meristem is responsible for growth in length at root and shoot tips.

Mitochondria generate ATP and contain their own DNA.

Lysosomes are commonly found in animal cells and are rare in plant cells.