The Living World — BIOLOGY STD 11 Science — Question

What are the structural characteristics of: The cells in the elongation zone of the root.

Name the end products of light reaction of photosynthesis. Mention the fate of each of them.

List the organs of human alimentary canal and name the major digestive glands with their location.

What are the stages of growth?

What is the chemical composition of xylem and phloem sap?

What is true about Taenia saginata?

1. Life history has pig as intermediate host.
2. There are two large suckers on scolex.
3. Rostellar hooks are absent.
4. Rostellum has double circle of hooks.

Well-watered plants transpire more during sunny and windy days than in cool and calm mornings. Comment.

Give comparison between cyclic and non-cyclic photophosphorylation.

Interfascicular cambium and cork cambium appear later in the life of a dicot plant; yet how do they differ from each other?

Anu after returning from school felt tired and lazy. She felt weak and was unable to even stand by herself. Her mother immediatelly gave her glucose solution to drink. Anu was refreshed and gained energy so fast through it. Next day, she asked her biology teacher that why her mother did not gave her food for instant energy. The biology teacher explained the concept of energy to her.

1. Why did her mother gave her glucose solution?
2. Name the components of the energy carrier ATP.
3. What is the net gain of ATP in eukaryotic cell from one molecule of glucose?
4. What values are shown by Anu?