Transport in Plants — BIOLOGY STD 11 Science — Question

What do you understand by binomial system? Please clarify by example.

Write an account on skeleton of sponges.

Carefully observe the following figure.

1. Name the technique shown in the figure and the scientist who demonstrated this technique for the first time.
2. Name at least three plants for which this technique can be employed for their commercial production.
3. What is the significance of aerating tube and feeding funnel in this setup?

Write any four differences between chordates and non-chordates.

Amrita's biology teacher taught in biology class that food helps in building the body and alsoprovides us energy to work. However, she was not able to understand the mechanisms involved. So, she discussed it with his father who is a professor of biology in a college. He answered that in living organisms certain structures, present in the cells and known as power houses of cells, which are responsible for conversion of food into energy. Read the above passage and answer the following questions.

1. Which cell organelles are known as power house of cell? Why?
2. List major components of mitochondrion.
3. What values are displayed by Amrita's father?

Write any four differences between inhalation and respiration.

Differentiate between pulmonary circulation and systemic circulation.

Explain the following in terms of mycorrhizal association.

1. Growth promotion.
2. Antimicrobial substance.
3. Nourishment.
4. Adverse environment.
5. Absorption of water.

Write the differences between: Blood and Lymph.

A student of taxonomy was puzzled when told by his professor to look for a key to identify a plant. He went to his friend to clarify what ‘Key’ the professor was refering to? What would the friend explain to him?