Explanation

Explanation

In a cloudburst, rainfall specifically exceeds 100 millimetres (about 4 inches) per hour over a localized area. 

Explanation

• The shoulder is primarily a ball-and-socket joint (glenohumeral joint),
• The elbow is a hinge joint (ulnohumeral joint).
• Both are classified as synovial joints,
• Freely movable and surrounded by a fluid-filled capsule. 

Explanation

• Limiting factors are environmental conditions that restrict the growth, abundance, or distribution of organisms.
• They determine which species can survive and how many individuals of each species can exist in an ecosystem.
• Limiting factors can be abiotic (non-living) like sunlight, water, or temperature.
• They can also be biotic (living) like competition, predation, or disease.

Last verified on 15-03-2026

Explanation

• During swallowing, the epiglottis (a flap of cartilage) folds down.
• It closes the opening of the trachea (windpipe) so that food enters the esophagus instead of the airway.
• This protective mechanism prevents choking and food entering the lungs.

Last verified on 15-03-2026

Explanation

• Ribosomes are small cell organelles responsible for protein synthesis.
• They read the genetic information from mRNA and join amino acids to form proteins.
• Ribosomes are found free in the cytoplasm or attached to the rough endoplasmic reticulum.
• They are present in both plant and animal cells.

Last verified on 15-03-2026

Explanation

• In cellular respiration, glucose reacts with oxygen to release energy.
• It producing carbon dioxide and water as main products.
• Respiration occurs mainly in the mitochondria of cells.
• The general respiration equation:
• Glucose + Oxygen → Carbon dioxide + Water + Energy (ATP).

Last verified on 15-03-2026

Explanation

• Stomata are tiny pores present mainly on the surface of leaves.
• They allow carbon dioxide (CO₂) to enter the plant for photosynthesis and release oxygen.
• Stomata are controlled by guard cells, which open and close the pores.

Last verified on 15-03-2026

Explanation

• The outer ear (pinna and ear canal) collects sound vibrations from the environment.
• These vibrations travel through the auditory canal to the eardrum (tympanic membrane).

Additional information:

Main Parts of the Ear

• Outer Ear – Pinna and auditory canal
• Middle Ear – Eardrum and three ossicles (malleus, incus, stapes)
• Inner Ear – Cochlea and semicircular canals (hearing and balance)

Last verified on 15-03-2026

Explanation

The correct order of the alimentary canal, also known as the gastrointestinal (GI) tract:

• Mouth: Food enters the mouth, where it's chewed and mixed with saliva.
• Oesophagus: Food passes through the oesophagus, a muscular tube that transports it to the stomach.
• Stomach: The stomach secretes gastric juices to digest proteins and fats.
• Small Intestine: Nutrient absorption occurs in the small intestine, where specialized structures like villi and microvilli increase the surface area.

Last verified on 15-03-2026