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

Differentiate between Apoplast and Symplast pathways of movement of water in plants

How is the mycorrhizal association helpful in absorption of water and minerals in plants?

What are respiratory substrates?

Name the most common respiratory substrate.

Differentiate between Respiration and Combustion.

Many pulses of daily use belong to one of the families below (tick the correct answer)

Which of the following plants is used to extract the blue dye?

Write floral formula for a flower which, is bisexual; actinomorphic; pentamerous sepal, petal, stamens free with ovary, syncarpous, superior, trilocular with axile placentation.

Add the missing floral organs of the given floral formula of Fabaceae.

\[\ce{φ \overrightarrow{\text{♀}} K_{(5)} -> A_{(g + 1)} \underline{G}_{1}}\]

Distinguish between families Fabaceae, Solanaceae, Liliaceae on the basis of gynoecium characteristics (with figures). Also write economic importance of any one of the above family.

Epiblema of roots is equivalent to ______.

What part of the plant would show the following:

Polyarch xylem

The cross-section of a plant material showed the following features when viewed under the microscope.

1. The vascular bundles were radially arranged.
2. Four xylem strands with exarch condition of protoxylem.

To which organ should it be assigned?

Differentiate between Apoplast and Symplast pathways of water movement. Which of these would need active transport?

Give the location of casparian strip and explain its role in the water movement.

Correct the statements:

Most of the water flow in the roots occurs via the symplast.

Minerals absorbed by the roots travel up the xylem. How do they reach the parts where they are needed most? Do all the parts of the plant get the same amount of the minerals?

Water is indispensable for life. What properties of water make it useful for all biological processes on the earth?

When a freshly collected Spirogyra filament is kept in a 10% potassium nitrate solution, it is observed that the protoplasm shrinks in size:

What will happen if the filament is replaced in distilled water?

Mitochondria are called powerhouses of the cell. Which of the following observations support this statement?