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Fill in the blanks:
During photosynthesis plants take in #1 and release #2.

Fill in the blanks:
In photosynthesis solar energy is captured by the pigment called #1.

Fill in the blanks:
Green plants are called #1 since they synthesize their own food.

In each of the following questions, a statement of Assertion (A) is given followed by a corresponding statement of Reason (R) just below it. Of the statements, mark the correct answer as
Assertion : All food chains are linked; if any one food chain is disturbed, it affects other food chains.
Reason : In a food chain, energy and nutrients are passed on from one organism to another.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If both assertion and reason are false.

In each of the following questions, a statement of Assertion (A) is given followed by a corresponding statement of Reason (R) just below it. Of the statements, mark the correct answer as
Assertion : Organic impurities of sewage include human and animal excreta, urea (of urine), oil etc. Reason : Inorganic impurities of sewage include micro-organisms that cause water-borne diseases.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If both assertion and reason are false.

Case study :Study the given table having some terms related to circulation in human beings and their descriptions and answer the following questions.

Identify the device B.

A Cardiogram
B Stethoscope
C Sphygnomanometer
D Hemocytometer

Case study : Different organisms have different ways in which exchange of gases occurs. Different respiratory organs are skin, lungs, gills and some animals even respire through tiny holes. Students were asked to observe the aquarium and identify the method of breathing in aquatic organisms.

What is required by the organisms to survive in aquarium for longest possible time?

A Nitrates
B Oxygen
C Sunlight
D Carbon dioxide

Which of the following products is not obtained from a forest?

A Honey
B Catechu
C Gum
D Ginger

Pick the option which gives the names of a tree and an animal, respectively from the following.

A Semal, hornbill
B Sal, khair
C Chinkara, blue bull
D Neem, palash

Assertion : Atmospheric nitrogen is always fixed by nitrogen-fixing microorganisms.
Reason : They convert ammonia present in atmosphere to nitrites and nitrates.
In each of the following questions, a statement of Assertion is given and a corresponding statement of Reason is given just below it. Of the four statements, given below, mark one as the correct answer

A if both Assertion and Reason are true and Reason is the correct explanation of Assertion
B if both Assertion and Reason are true but Reason is not the correct explanation of Assertion
C if Assertion is true but Reason is false
D if both Assertion and Reason are false.