Secondary School (English Medium) (5 to 8) कक्षा ७ - CBSE Question Bank Solutions

Complete the crossword given below with the help of clues.

Across

1. Substance used as synthetic wool. (7)
2. A plastic used for making containers and carry bags. (9)
3. Substance made up of large number of smaller molecules. (7)
4. Another name for this compound is artificial silk. (5)

Down

     5. A type of fibre obtained naturally from cocoon. (4)
     6. A synthetic fibre classified as polyester. (8)
     7. A polymer used for making ropes. (5)

Organisms that prepare food for themselves using simple naturally available raw materials are referred to as ______.

In the absence of which of the following will photosynthesis not occur in leaves?

Which of the following statements is/are correct?

1. All green plants can prepare their own food.
2. Most animals are autotrophs.
3. Carbon dioxide is not required for photosynthesis.
4. Oxygen is liberated during photosynthesis.

Choose the correct answer from the options below:

Pitcher plant traps insects because it ______.

When we observe the lower surface of a leaf through a magnifying lens we see numerous small openings. Which of the following is the term given to such openings?

Which of the following raw material is available in the air for photosynthesis?

Potato and ginger are both underground parts that store food. Where is the food prepared in these plants?

Unscramble the following to form terms related to modes of nutrition.

1. RASPAEIT
2. ROPEHYTSAP
3. TOROPHAUT
4. SIBIOMSYS

Nitrogen is an essential nutrient for plant growth. But farmers who cultivate pulse crops like green gram, bengal gram, black gram, etc. do not apply nitrogenous fertilizers during cultivation. Why?

Observe the diagram given as Figure and label the following terms given in the box.

Fill in the blanks of the paragraph given below with the words provided in the box.

Leaves have a green pigment called ___(a)___ which captures ___(b)___ from sunlight. This ___(c)___ is used in the process of ___(d)___ and along with other raw materials like ___(e)___ and ___(f)___ synthesize ___(f)___.

Can you give me a name?

Solve the following riddles by writing the name of the organism and its mode of nutrition. One riddle is solved to help you.

I am tall but I cannot move. I am green and can prepare my own food. ______, ______ 

Can you give me a name?

Solve the following riddles by writing the name of the organism and its mode of nutrition. One riddle is solved to help you.

I am small and I can fly. I disturb your sleep, bite you and suck your blood which is my food. ______, ______

Which of the following pair of teeth differ in structure but are similar in function?

Name the parts of the alimentary canal where taste of the food is perceived.

Name the parts of the alimentary canal where bile juice is produced.

Mark the following statement as True or False. If false, write the correct statement.

Tongue is attached to the roof of the mouth cavity at the back.

Choose the odd one out from the group and give reason.

Following statements describe animal nutrition. Read the statement and give one word for the statement. Write the terms that describe process.

Taking food into the body.