CBSE Class 7 Science Nutrition in Animals Worksheet

CBSE Class 7 Science Nutrition in Animals Worksheet with Solution by Expert Science Mam. Students of 7th Grade can solve this worksheet for extra preparation before exam. Private Teacher or Guardians of the Students can copy all the questions of this chapter and will match after solve their students.

Nutrition in Animals Class 7 Worksheet

Nutrition in Animals Class 7 Worksheet

Worksheet for Chapter No.2): – Nutrition in Animals

The following questions are important for your exams for 1 mark 2 mark or 5 marks. First solve the questions on your own and then saw the solution for understanding it better.

Practice worksheet for class 7

Section A

Q.1.)  What is digestion ?

The breakdown of complex components of food into simpler substances is called as digestion.

 

Q.2.) What is the mode of taking food into the body in bees and humming birds?

Bees and hummingbirds suck the nectar of plants and taking it inside the body.

 

Q.3.) What is digestive system?

The digestive track and the associated glands together constitute the digestive system.

 

Q.4.) What is milk teeth and permanent teeth ?

 The milk teeth are the first set of teeth grows during infancy and They fall off at the age between 6 to 8 years. The second Set of teeth that replaces milk teeth called as permanent teeth and they may last throughout the life or fall off during old age or due to some dental disease.

 

Q.5.) Define ingestion?

Food is taken into the body through the mouth the process of taking food inside the body is called as ingestion.

 

Q.6.) What is the tooth decay?

The bacteria present in the mouth after eating breakdown the sugar present from the leftover food and releases acid. That is it is gradually damage the teeth if not treated in time. This is called as tooth decay.

 

Q.7.) What is assimilation ?

  The absorbed food substances are transported via blood vessels to the different organs of the body where they are used to build complex substances such as proteins required by the body. This is called assimilation.

 

Q.8.) What is egestion ?

The remaining West product present in the rectum and remain there as a semisolid face. The fecal matter is removed through the anus from time to time this is called as egestion.

 

Q.9.) What are the causes of diarrhea?

Diarrhea maybe caused by an infection , food poisoning or indigestion.

 

Q.10.) What is rumination ?

The grass eating animals quickly swallow the grass and stored it in a part of stomach called a rumen. Here The food gets partially digested and it is called as cud. But later the cud returns to the mouth in small lumps and animals chews it again. This process is called as rumination.

 

Q.11.) Define ruminants and give example.

  The animals which follow the rumination process called as ruminants.

E.g., cattle, goat , sheep , deer.

 

Q.12.) How ingestion and digestion take place in amoeba ?

Amoeba ingests its food with the help of its false feet or pseudopodia. The food is digested in the food vacuole.

 

Q.13.) Write the parts of human digestive system.

Human digestive system consists of elementary canal and secretary glands. Elementary canal consists of

1.) Buccal cavity

2.) Esophagus

3.) Stomach

4.) Small intestine

5.) Large intestine

6.) Rectum

7.) Anus

The main digestive glands which secret digestive juices are

1.) Salivary glands

2.) The liver

3.) The pancreas

 

Q.14.) Write the order of nutrition taking place in animals ?

1.) Ingestion

2.) Digestion

3.) Absorption

4.) Assimilation

5.) Egestion

 

Q.15.) Which part of the digestive system involved following processes.

→1.) Absorption of food – absorption of food is taking place in small intestine

2.) Formation of feces- large intestine

3.) Killing of bacteria- the stomach

4.) Completion of digestion:- small intestine

 

Q.16.) What is the location and function of Villi ?

The inner walls of small intestine have thousands of fingers like out growth these are called villi. The function of villi is to absorb the digested food material and then it is further transported to different organs via blood vessels.

 

Q.17.) What the person should do before going to the doctor when person suffering from diarrhea ?

Before a doctor is consulted the patient should be given plenty of boiled and cooled water with A pinch of salt and sugar dissolved in it this is called oral rehydration solution ( ORS ) .

 

Q.18.) how digestion in stomach takes place?

The inner lining of the stomach secretes mucous, hydrochloric acid and digestive juices. The mucus protects the lining of the stomach the acid kills many bacteria that enter along with the food and mix the medium in the stomach acidic and help the digestive juices to act. Digestive juices breakdown proteins into simpler substances.

 

Q.19.) What is the small intestine and explain the digestion takes place in it?

The small intestine is highly coiled and about 7.5 m long it received secretions from the liver and the pancreas. It is wall also secrets juices. The partly digested food reaches the lower part of the small intestine where the intestinal juices complete the digestion of all components of the food the carbohydrates get broken down into simple sugar such as glucose, fats into fatty acids and glycerol, proteins into amino acids.

 

Q.20.) Which juice is secreted by largest gland in the body?

The liver is a reddish-brown gland is the largest gland in the body and its secrets the bile juice that is stored in a sack called gall bladder the Bile plays an important role in the digestion of fats.

 

Q.21.) What are the pancreas and juice secreted by pancreas?

Pancreas is a large cream-colored gland located below the stomach. The pancreatic juice acts on carbohydrates fats and proteins and changes them into simple forms.

 

Q.22.) Where the Saliva is secreted ? Which digestion done by saliva ?

Our mouth has salivary glands which secrete saliva. The Saliva breaks down the starch into sugars.

 

Q.23.) How the digestion occurs in starfish as it has no proper digestive system?

Starfish feeds on animals covered by hard shells of calcium carbonate. After opening the shell, the starfish pops out its stomach through its mouth to eat the soft animal inside the shell. The stomach then goes back into the body and the food is slowly digested.

Updated: February 17, 2023 — 12:47 pm

Leave a Reply

Your email address will not be published. Required fields are marked *