Photosynthesis — Biology STD 10 — Question

A hormone which influences the ossification of bones is ______.

The blood vessel that begins and ends in capillaries is the _________.

The________ (i)________ force is responsible for the attraction between water molecules and the cells of the plant root. On the other hand, the________ (ii)________ force keeps the water molecules________ (iii)________ to each other, aiding in the continuous water column formation from the roots to the leaves. These forces work together to overcome________ (iv)________ resistance and help in the efficient movement of water through the________ (v)________ of the plant.

The leaves of the __________ plants have cuticular wax.

A bundle of axons enclosed in a tubular sheath is called _________.

Complete the following sentence with appropriate word:

Human kidney is made up of ______.

The chromosomal theory of inheritance was proposed by ____________in 1902.

___________ hormone plays a central role in reproduction in females.

Thermal power plants give out a lot of ________ waste water.

Study the diagram given below and fill in the blanks with suitable words::


In order to prove that carbon dioxide is necessary for (a) ___________, a potted plant is placed in dark for 48 hours to (b) ___________,the leaves. A part of a leaf is inserted into a conical flask containing potassium hydroxide solution. This is to absorb (c) ___________,from the flask. The plant is then placed in sunlight for a few hours. The experimental leaf is tested for starch. The part of the leaf that was inside the conical flask turns (d) ___________,whereas the part of the left outside turns (e) ___________,in colour.