Sense Organs
ICSE · Class 10 · Biology
Flashcards for Sense Organs — ICSE Class 10 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.
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Explore the full setWhat are sense organs and what is their alternate name?
Answer
Sense organs are specialized organs which receive external or internal changes. They are also called receptors because they receive and detect various stimuli from the environment or within the body.
Define stimulus and response with their relationship.
Answer
Stimulus: Any change, external or internal, which may affect body function. Response: An activity of an organism which results due to a stimulus. The body responds to stimulus only when it receives in…
What is the difference between exteroceptors and interoceptors?
Answer
Exteroceptors: Receptors present outside the body that receive environmental changes like light, temperature, pressure, touch, and pain. Interoceptors: Receptors situated within the body that sense in…
List the five types of receptors based on stimuli they receive.
Answer
1. Mechanoreceptors - detect sound, touch, vibrations, and pressure (e.g., ears, skin) 2. Thermoreceptors - sense temperature changes (e.g., nerve endings in skin) 3. Chemoreceptors - sense chemical s…
Name the three coats of the eyeball and their components.
Answer
1. Outer fibrous coat: Sclera and Cornea 2. Middle vascular coat: Choroid, Ciliary body, and Iris 3. Inner nervous coat: Retina…
What are the functions of sclera and cornea?
Answer
Sclera: The white part of the eye that provides shape to the eyeball and protects it. Cornea: The anterior transparent part (1/6th of total eyeball) that allows light to enter the eye. It has no blood…
What is the function of choroid and why does it contain melanin pigment?
Answer
Choroid contains numerous blood vessels and supplies nourishment and oxygen to the retina. It contains melanin pigment which prevents light reflection inside the eye to avoid dazzling sensation, ensur…
Explain the power of accommodation and which part of the eye is responsible for it.
Answer
Power of accommodation is the ability to change the focal length of the lens according to the distance of the object. The ciliary body with its suspensory ligaments holds the lens and changes its foca…
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