Locomotion and Movement — BIOLOGY STD 11 Science — Question

How is the five–kingdom classification advantageous over the twokingdom classification?

Differentiate between the following: Apoplast and symplast pathways of movement of water in plants

Write short note on ear ossicles.

Why do we consider blood as a connective tissue?

Explain anaerobic breakdown of glycogen in muscles and its effect.

Describe the three types of neurons based on the number of axons and dendrons, and their locations in human body.

Radha's father who is a diabetic patient does not avoid food items doctor has told him in diet. He also feels lazy to go for a walk. One day, his glucose level was checked by his doctor. The doctor advised him to take injections regularly, as he was not able to control his diabetes with diet and medication. He came home and while telling the things to Radha's mother, Radha (biology student) heard them and interrupted in between. She explained that, doctor has given insulin injections to control his blood glucose level. This may be discontinued, if he will take precautions in his daily routine.

1. Which endocrine gland and its part is involved in the secretion of inslin?
2. Why doctor preferred him to take insulin injections and what is the role of insulin in controlling level of glucose in blood?
3. What precaution he should take to protect himself from such disorder?
4. What are the values reflected from Radha's character as a biology student and a daughter?

State the condition in which the flowers are described.

1. Perigynous.
2. Epigynous and.
3. Hypogynous.

Give one example of each plant in whih these flowers are found.

Explain the pelvic girdle of human skeleton.

Demonstrate and explain the formation of annual ring in the transverse section of the stem.