Questions · Page 2 of 3

1 Marks Question

Question 511 Mark
Following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describes each process. Transport of digested and soluble food from the intestine to blood vessels.
Answer
Absorption.
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Question 521 Mark
Where is the bile produced? Which component of the food does it digest?
Answer
Liver secretes bile juice that is stored in a sac called the gall bladder. The bile plays an important role in the digestion of fats.
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Question 531 Mark
Fill in the blanks: The inner wall of the small intestine has many finger-like outgrowths called ___________.
Answer
The inner wall of the small intestine has many finger-like outgrowths called villi.
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Question 541 Mark
Which part of the digestive canal is involved in: Formation of faeces _____________.
Answer
Formation of faces large intestine.
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Question 551 Mark
Define egestion.
Answer
The process of removal of faecal matter from the body through the anus is called egestion.
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Question 561 Mark
Suggest the organ of digestive system where the digestive juices from liver and pancreas is poured.
Answer
The digestive juices from liver and pancreas is poured into small intestine which helps in complete digestion and absorption of food.
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Question 571 Mark
Where is liver found in Human digestive system?
Answer
The liver is a reddish-brown gland present in the upper part of the abdomen on the right side.
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Question 581 Mark
Identify the location of salivary gland.
Answer
Salivary gland is present in the buccal cavity and it secretes saliva.
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Question 591 Mark
Choose the odd one out from each group and give reasons. stomach, liver, pancreas, salivary gland.
Answer
Stomach is the odd one. It is a digestive organ. All others are glands.
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Question 601 Mark
In which part of the human digestive system are bacteria present in the food killed? Explain how.
Answer
Bacteria in food are killed in stomach. The inner lining of stomach secretes hydrochloric acid and digestive juices which kill the bacteria in food.
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Question 611 Mark
Which part of the digestive canal is involved in:
Killing of bacteria _____________.
Answer
Killing of bacteria stomach.
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Question 621 Mark
Which part of the digestive canal is involved in:
Chewing of food _____________.
Answer
Chewing of food buccal cavity.
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Question 631 Mark
Choose the odd one out from each group and give reasons. oesophagus, small intestine, large intestine, rectum.
Answer
Small intestine is the odd one. It releases intestinal juices and is involved in digestion. All others do not take part in the digestion process.
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Question 641 Mark
Following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describes each process. Removal of undigested and unabsorbed solid residues of food from the body.
Answer
Egestion.
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Question 651 Mark
Define digestion.
Answer
The process of breakdown of complex substances of food into simpler form is called digestion.
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Question 661 Mark
Name the secretions of stomach which digest food.
Answer
The inner lining of stomach secretes mucous hydrochloric acid and digestive juices.
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Question 671 Mark
Fill in the blanks with suitable words: Digestion of food starts in and gets completed in .
Answer
Digestion of food starts in buccal cavity and gets completed in small intestine.
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Question 681 Mark
Explain the role of mucus secreted by stomach.
Answer
The function of mucus is to protect the lining of stomach from the action of hydrochloric acid secreted by stomach lining.
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Question 701 Mark
What is rumination?
Answer
The partially digested food in ruminants goes to rumen and then to second chamber from where it is returned to the mouth for thorough chewing. This is called rumination.
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Question 711 Mark
Following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describes each process. Breaking of complex food substances into simpler and soluble substances.
Answer
Digestion.
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Question 721 Mark
Choose the odd one out from each group and give reasons. Tongue, absorption, taste, swallow.
Answer
Absorption is the odd one. It is a digestive process that occurs in small intestine. All others are related to mouth.
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Question 731 Mark
Fill in the blanks: The largest gland in the human body is __________.
Answer
The largest gland in the human body is liver.
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Question 741 Mark
What is the function of digestive juices?
Answer
The digestive juices convert complex substances of food into simpler ones.
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Question 751 Mark
Mark the following statements as True or False. If false, write the correct statements. Tongue is attached to the roof of the mouth cavity at the back.
Answer
False.
Tongue is attached to the floor of the mouth cavity at the back.
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Question 761 Mark
Name different modes of feeding in animals?
Answer
Scraping, chewing, brewing, capturing and swallowing, sucking etc. are the different mode of feeding in animals.
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Question 771 Mark
Where is the bile produced? Which component of the food does it help to digest?
Answer
Liver secretes the bile juice which is stored in the gall bladder. Bile plays an important role in the digestion of fats.
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Question 781 Mark
Following statements describe the five steps in animal nutrition.
Read each statement and give one word for each statement.
Write the terms that describes each process.
Transportation of absorbed food to different parts of body and their utilisation.
Answer
Assimilation.
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Question 791 Mark
Name the organ responsible for removal of undigested and unabsorbed residues from human body.
Answer
Anus.
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Question 801 Mark
Windpipe runs adjacent to the foodpipe. What will happen if food particles enter the windpipe? Explain.
Answer
The windpipe carries air from the nostrils to the lungs. It runs adjacent to the foodpipe. If, by chance, food particles enter the windpipe, we feel choked, get hiccups or cough.
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Question 811 Mark
Mark $‘T’$ if the statement is true and $‘F’$ if it is false:
The tongue helps in mixing food with saliva. $(T/ F)$
Answer
True.
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Question 821 Mark
Fill in the blanks with suitable words: The alimentary canal stretches from to .
Answer
The alimentary canal stretches from mouth to anus.
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Question 831 Mark
Why does a doctor put a glucose drip to a patient who has just been operated?
Answer
This is because the patient cannot digest the food and glucose being the simplest form, get easily absorbed and provide necessary energy to patient.
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Question 841 Mark
Fill in the blanks with suitable words: is the largest gland in the human body.
Answer
liver is the largest gland in the human body.
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Question 851 Mark
Name the simple forms of carbohydrates, fats and proteins.
Answer
The food components and their simple forms are carbohydrates (glucose), fatty (fats) acids and glycerol, proteins (amino acids).
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Question 881 Mark
Name the parts of alimentary canal.
Answer
Buccal cavity, oesophagus, stomach, small intestine, large intestine, rectum and anus.
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Question 891 Mark
Name the parts of the alimentary canal where: Bile juice is produced.
Answer
Liver (produce bile, that is stored in gall bladder and helps in fats digestion).
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Question 901 Mark
Discuss the role of hydrochloric acid secreted by gastric glands.
Answer
It helps in the breakdown of food particles. It creates an acidic environment which facilitates the action.
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Question 911 Mark
Mark $‘T’$ if the statement is true and $‘F’$ if it is false: The product of photosynthesis is not a protein. $(T/ F)$
Answer
True.
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Question 931 Mark
Fill in the blanks: In photosynthesis solar energy is absorbed by the pigment called ___________.
Answer
In photosynthesis solar energy is captured by the pigment called chlorophyll.
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Question 941 Mark
Name the parts of the alimentary canal where: Taste of the food is perceived.
Answer
Tongue (contain taste buds).
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Question 951 Mark
Choose the odd one out from each group and give reasons.
liver, salivary gland, starch, gall bladder.
Answer
Starch is the odd one. It is a type of carbohydrate. All others are parts of digestive system of human.
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Question 971 Mark
Mark $‘T’$ if the statement is true and $‘F’$ if it is false:
The gall bladder temporarily stores bile. $(T/ F)$
Answer
True.
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Question 981 Mark
Fill in the blanks using the words listed below.
water, front, intestinal, salts, pseudopodia, back, vacuole
Tongue is attached at the ___________ to the floor of the mouth cavity and is free at the ___________.
Answer
Tongue is attached at the back to the floor of the mouth cavity and is free at the front.
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Question 991 Mark
Fill in the blanks using the words listed below.
water, front, intestinal, salts, pseudopodia, back, vacuole
The digestion of all food components is completed by the ____________ juice.
Answer
The digestion of all food components is completed by the intestinal juice.
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Question 1001 Mark
Fill in the blanks:
The stomach releases hydrochloric acid and ___________ juices which act on food.
Answer
The stomach releases hydrochloric acid and digestive juices which act on food.
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1 Marks Question - Page 2 - Science STD 7 Questions - Vidyadip