Biological Classification — BIOLOGY STD 11 Science — Question

On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her friends to find out the solutions to the following questions.

1. Which probable disease are these people suffering from?
2. How is it caused?
3. What effect does this condition have on pregnancy?

Define the term inflorescence. Explain the basis for the different types inflorescence in flowering plants.

Explain how and in what form are the carbohydrates synthesized in leaves in order to reach long distance parts in a plant.

Write any four differences between cortical and juxtamedullary nephrons.

1. Mention the symptoms of manganese toxicity in plants.
2. How does manganese toxicity result in symptoms of deficiency of iron, magnesium and calcium in plants?

Write a short note on fruit.

Plants are autotrophic. Can you think of some plants that are partially heterotrophic?

Describe at least three major functions of turgor pressure.

The bulk of a plant is made up of dead tissues so that physical strength can be attained and resources can be utilized in a better way. What lesson can be learnt from this strategy of plants? How does focusing on something help us in our life?

1. We should learn to save money so that it can be utilized for better purposes.
2. Instead of wasting our energy on trivial matters, we should focus on more E productive works.
3. Physical exercise is good for a strong body, while mental exercise is good for a strong mind.

Frogs are beneficial for mankind, justify the statement.