Explanation

• The female gametophyte of angiospermic plants is the embryo sac.
• It is also known as the megagametophyte.
• It is the haploid (containing one set of chromosomes) structure within the ovule that contains the egg cell.
• It is responsible for fertilization.

Last verified on 06-11-2026

Explanation

• Bronchitis is the inflammation of the bronchial tubes, which carry air to and from the lungs.
• It commonly causes coughing, mucus production, chest discomfort, and sometimes shortness of breath.
• Bronchitis may be acute, often caused by viruses, or chronic, commonly associated with long-term exposure to irritants such as cigarette smoke.

Last verified on 28-10-2026

Explanation

• Apomixis: Seed formation without fertilization, meaning the fusion of male and female gametes does not occur.
• The offspring are often genetically identical to the parent plant because the seed develops without normal sexual reproduction.

Additional information:

• Parthenocarpy: Fruit development without fertilization; it commonly produces seedless fruits.
• Grafting: A vegetative propagation method in which parts of two plants are joined.
• Scion: The shoot or stem piece joined to the rootstock during grafting.

Last verified on 16-10-2026

Explanation

• Genetics: Study of heredity and variation in organisms.
• An Austrian monk who experimented with pea plants in the 19th century is known as the "Father of Modern Genetics"

Additional information

• Ecology: Study of organisms and their environment.
• Anatomy: Study of the structure of organisms.
• Evolution: Study of how living organisms change over generations.

Last updated by NA on 06-11-2026

Explanation

• The cerebellum controls balance, posture, and coordination of voluntary movements.
• It helps make movements smooth, precise, and properly coordinated.
• It is located at the back of the brain, beneath the cerebrum.

Additional information:

• Cerebrum: Thinking, memory, intelligence, and voluntary actions.
• Thalamus: Relays most sensory information to the cerebral cortex.
• Medulla oblongata: Controls involuntary functions such as breathing and heartbeat.

Last verified on 10-10-2026

Explanation

• The skin is considered the largest organ of the human body.
• It covering an area of about 1.5-2 square meters (16-22 square feet).
• It weighing around 3-4 kilograms (7-9 pounds).

Last verified on 01-09-2026

Explanation

Homeostasis is the set of metabolic reactions that maintain the internal environment of an organism, regulating factors.

Such as temperature, pH, blood sugar levels, and blood pressure.

Explanation

Chondrocytes are the cells that make up cartilage, a type of connective tissue found in various parts of the body, such as joints, ears, nose, and ribs.

Chondrocytes produce and maintain the cartilage matrix, which consists of collagen and proteoglycans.

Explanation

The Frontal Lobe (part of the Cerebrum) controls reasoning, planning, and problem-solving.

More Details
Cerebellum → balance & coordination,
Medulla → involuntary actions,
Cerebrum → higher thinking functions, divided into 4 lobes (Frontal, Parietal, Temporal, Occipital).

Explanation

The respiratory surface, where gas exchange occurs, is the alveoli.

Alveoli are tiny sacs located at the end of the bronchioles, deep in the lungs.

They provide a large surface area for the exchange of oxygen and carbon dioxide between the lungs and the bloodstream.