Explanation

• Molds and yeasts belong to the kingdom Fungi.
• Molds are multicellular fungi that grow as thread-like structures called hyphae.
• Yeasts are mostly unicellular fungi that reproduce mainly by budding.
• Fungi obtain nutrients by absorbing dissolved organic matter from their surroundings.

Last verified on 02-11-2026

Explanation

• The skeleton provides structural support and maintains the body's shape.
• It protects vital internal organs, such as the brain, heart and lungs.
• It helps in movement by providing attachment points for muscles.
• The adult human skeleton consists of 206 bones.

Last verified on 02-11-2026

Explanation

• Chemotropism is the directional growth of a plant or its parts in response to a chemical stimulus.
• The growth of a pollen tube towards the ovule due to chemical signals is an example of positive chemotropism.

Additional information:

• Thigmotropism is a response to touch, hydrotropism to water and phototropism to light.
• Chemotropism helps in plant reproduction, especially during fertilization.

Last verified on 02-11-2026

Explanation

• The axial skeleton forms the central supporting axis of the human body.
• It includes the skull, vertebral column, ribs and sternum.
• The adult human axial skeleton consists of 80 bones.
• The appendicular skeleton consists of the limbs and the shoulder and pelvic girdles, containing 126 bones.

Last verified on 02-11-2026

Explanation

• Nephridiopore is the external opening of the nephridium in an earthworm.
• Nephridia are the excretory organs that remove metabolic waste and help regulate water balance.
• Nephrostome is the funnel-shaped internal opening of a nephridium.
• Earthworms use nephridia to eliminate nitrogenous waste from their bodies.

Last verified on 02-11-2026