The Endocrine System — Biology STD 10 — Question

During Telophase I of meiosis cell division, each chromosomes, consisting of two ______ (i) ______ reach the opposite poles of the cell. The ______(ii) ______ envelope begins to reform around these chromosome clusters. Meanwhile, the cell starts to ______ (iii) ______ preparing for its division into two cells. This stage is crucial as it marks the end of the first ______ (iv) ______ division, setting the stage for ______ (v) ______ where the cell actually divides into two new cells.

The spindle fibers are made of _______ .

DNA acts as director of ______ synthesis.

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.

Active transport is in a direction________________ to that of diffusion.

________ is the organ of balance and hearing in the body.

The number of chromosomes in humans is ________.

Photosynthesis produces oxygen and ______.

Complete the following table :

Components	Origin	Function	Approx. No. (per mm3)	Life span
RBCs
WBCs
Platelets