Neural Control and Coordination — BIOLOGY STD 11 Science — Question

Rashi, a class VII student was sitting with her mother (who is an editor for Biology). Her mother was insisting her to have some fruits to which Rashi refused repeatedly. Her mother tried convincing her by saying that proper diet is important for growth. Rashi argued saying that even plants grow without taking any food. To this, her mother smiled and explained her how plants make food with the help of leaves.

1. Name the term used for the process of food production in plants.
2. What are the factors required by plants for this process?
3. What are the additional function of leaves.
4. What values are shown by Rashi's mother?

How many parathyroid glands does a human being have? Where are they located? Name the hormone secreted by them.

Gibberellins were first discovered in Japan when rice plants were suffering from bakane (the foolish seedling disease) caused by a fungus Gibberella fujikuroi.

1. Give two functions of this phytohormone.
2. Which property of Gibberellin caused foolish seedling disease in rice?

Which one of the following characters is not typical of the class-Mammalia?

1. Seven cervical vertebrae.
2. Thecodont dentition.
3. Ten pairs of cranial nerves.
4. Alveolar lungs.

How glycolysis takes place in anaerobic environment?

What will happen if the stretch receptors of the urinary bladder wall are totally removed? Explain.

Name the pathological condition when uncontrolled cell division occurs.

Distinguish between cranial nerves and spinal nerves.

Give the name of the three major layers of diffusion membrane.

Differentiate between reticulate venation and parallel venation.