Science (English Medium) इयत्ता ११ - CBSE Question Bank Solutions

Which products formed during the light reaction of photosynthesis are used to drive the dark reaction?

Do reactions of photosynthesis called, as ‘Dark Reaction’ need light? Explain.

Is it correct to say that photosynthesis occurs only in leaves of a plant? Besides leaves, what are the other parts that may be capable of carrying out photosynthesis? Justify.

The entire process of photosynthesis consists of a number of reactions. Where in the cell do these take place?

Synthesis of ATP and NADPH ______

The entire process of photosynthesis consists of a number of reactions. Where in the cell do these take place?

Synthesis of sugar molecule ______

The entire process of photosynthesis consists of a number of reactions. Where in the cell do these take place?

Synthesis of starch ______

Which property of the pigment is responsible for its ability to initiate the process of photosynthesis? Why is the rate of photosynthesis higher in the red and blue regions of the spectrum of light?

In the figure given below, the black line (upper) indicates action spectrum for photosynthesis and the lighter line (lower) indicates the absorption spectrum of chlorophyll a. Answer the following:

1. What does the action spectrum indicate? How can we plot an action spectrum?
2. How can we derive an absorption spectrum for any substance?

Growth can be measured in various ways. Which of these can be used as parameters to measure growth ______.

Does the growth pattern in plants differ from that in animals? Do all the parts of plant grow indefinitely? If not, name the regions of plant, which can grow indefinitely.

Label the diagram

1. This is which part of a dicotyledonous plant?
2. If we remove part 1 from the plant, what will happen?

Both animals and plants grow. Why do we say that growth and differentiation in plants is open and not so in animals? Does this statement hold true for sponges also?

A gland not associated with the alimentary canal is ______.

Match the two columns and select the right one among options given

Dental formula in human beings is ______.

What do we call the type of teeth attachment to jaw bones in which each tooth is embedded in a socket of jaws bones?

Stomach is located in upper left portion of the abdominal cavity and has three major parts. Name these three parts.

Explain the process of digestion in the buccal cavity with a note on the arrangement of teeth.

Match the following and mark the correct options

Name the organs of respiration in the following organisms:

Flatworm - ______.