Life Processes in Animals
CBSE · Class 7 · Science
Flashcards for Life Processes in Animals — CBSE Class 7 Science. Quick Q&A cards covering key concepts, definitions, and formulas.
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What are life processes? Give examples.
Answer
Life processes are essential activities that living beings perform to survive. Examples include nutrition, respiration, excretion, and reproduction. These processes work together to keep organisms ali…
Define digestion and explain where it occurs in humans.
Answer
Digestion is the process of breaking down complex food components into simpler forms that the body can use. In humans, it occurs in the alimentary canal, which is a long tube starting from the mouth a…
What is mechanical digestion? Where does it begin?
Answer
Mechanical digestion is the physical breakdown of food into smaller pieces by crushing and chewing. It begins in the mouth where teeth break down food into fine pieces, making it easier to swallow and…
Why does chapati taste sweet when chewed for a long time?
Answer
Chapati contains starch (carbohydrate). Saliva contains digestive enzymes that break down starch into sugar. When you chew chapati for a long time, the starch is converted to sugar by saliva, making i…
What is the function of the food pipe (oesophagus)?
Answer
The food pipe or oesophagus is a flexible tube that carries food from the mouth to the stomach. Its walls contract and relax in wave-like motions to push food downward through a process called perista…
List three functions of stomach secretions.
Answer
1. Digestive juice breaks down proteins into simpler components 2. Acid helps break down proteins and kills harmful bacteria 3. Mucus protects the stomach lining from acid damage…
Why is the small intestine called 'small' when it's 6 meters long?
Answer
The small intestine is called 'small' because of its narrow diameter, not its length. Despite being about 6 meters long (the longest part of the alimentary canal), it has a smaller width compared to t…
What are the three sources of digestive secretions in the small intestine?
Answer
1. The inner lining of the small intestine itself 2. The liver (secretes bile) 3. The pancreas (secretes pancreatic juice)…
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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