Respiration In Plants — BIOLOGY STD 11 Science — Question

Draw labelled diagram of Brain.

The essential functions of roots are anchorage and absorption of water and minerals in the terrestrial plant. What functions are associated with the roots of aquatic plants. How are roots of aquatic plants and terrestrial plants different?

Write the functions of the following: Golgi apparatus.

As a result of intestinal disease, parts of the alimentary-canal are sometimes surgically removed. Discuss the effect of this removal on lifestyle and digestive function.

1. Stomach.
2. Colon.

Once Amit's teacher took his class to an educational tour where they saw people manufacturing leather from the skin of different animals by the tanning process. Amit found this an interesting process and asked many questions regarding this. After knowing the process, he argued that it is unethical and illegal to use animals for obtaining leather. The teacher appreciated Amit for his action.

1. Which features of this tissue are useful to obtain leather?
2. Name the kind of dense connective tissue involved in this.
3. Write any two unique features of this tissue.
4. What values of Amit are reflected from the above discussion?

Explain the following processes:
Polarisation of the membrane of a nerve fibre.

What are the steps involved in formation of a root nodule?

Explain the process of inspiration under normal conditions.

What is called the control room of the cell? Describe it by drawing a labelled diagram and mention its functions.