Plant Growth and Development — BIOLOGY STD 11 Science — Question

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?

Differentiate between vascular tissues of gymnosperms and angiosperms.

What is Segmentation? How many types are there? Explain each with an example.

Cell is the basic unit of life. Discuss in brief.

Two groups (A and B) of bean plants of similar size and same leaf area were placed in identical conditions. Group A was exposed to light of wavelength 400-450 nm and Group B to light of wavelength of 500-550 nm. Compare the photosynthetic rate of the two groups giving reason.

When a substrate is being metabolised, why does not all the energy that is produced get released in one step? It is released in multiple steps. What is the advantage of stepwise release?

Give comparison between cyclic and non-cyclic photophosphorylation.

Why the vascular plants dominated land?

What is meant by ‘synergistic effect'? Explain with an example.