Biological Classification — BIOLOGY STD 11 Science — Question

List the hormones secreted by the following:
Hypothalamus.

Prakhar, a class XI student went out after rains in the garden. He saw earthworms on the ground and wondered how they are able to move, eat and perform various function of life Next day, he went to his biology teacher and asked her about the same. Her biology teacher politely explained him about how different animals have various levels of organisation of cells. She also told her that except sponges and coelenterates, all the animals of the kingdom-Animalia have organ- system level of organisation.

1. What kind of body organisation are present in sponges and coelenterates?
2. Write about the organisation type in lower animals, like protozoans.
3. In which phylums organ system level organisation is found?
4. What values are shown by Prakhar?

Write the general characteristics of Protista class.

Mention the basis of a (biological) classification. What educative advantage do we get from r botanical garden and r zoological park?

Compare the following:
Resting potential and action potential

Write any two energy yielding reactions of glycolysis.

Write the name of three parasitic protozoans.

Describe the nervous system of cockroach.

Write any four characteristics of class, ‘Aves’.