Animal Kingdom — BIOLOGY STD 11 Science — Question

What is a polysome? What is its function?

What controls the respiratory rhythm in human beings?

"Viruses viruses could be crystallised." Whose statement is this?

What are the ribs that do not connect to the sternum or other ribs called?

In case of dysentery people feel a sense of weakness. What may be the reason for this?

What type of cells are found in the highest quantity in white blood cells?

Which are the two basic phases of the cell cycle?

Write the scientific name of:

1. The freshwater sponge.
2. The cnidarian that has both polyp and medusa.

It is said that one cell cycle of cell division in human cells (eukaryotic cells) takes 24 h. Which phase of the cycle, do you think occupies the maximum part of the cell cycle.

Name two animals in which incomplete double circulation is found.