Plant Kingdom — BIOLOGY STD 11 Science — Question

ATPase enzyme consists of two parts. What are those parts? How are they arranged in the thylakoid membrane.

Name the end products of aerobic and anaerobic fate of glycolysis. List two ways by which molecules of ATP are produced in glycolysis during aerobic respiration in a cell.

What is pressure potential? How is it represented?

Write two energy yielding reactions of glycolysis.

Lichens play important role in biological succession and soil formation. Justify.

Kavita (student of class VIII) returned from the school and started counting her teeth. She felt surprised and counted her teeth two more times, but each time she count, she found her teeth to be 28 in number. Then, she started counting his younger brother (student of class I) teeth and found them to 20 in number. She rushed to his father who was a dentist and told him, that her teacher taught her that human beings have 32 teeths. But she has only 28 and his brother has 20. Her father explained that number of teeth are related to the age of a child and also told her about diphyodont and heterodont dentition.

1. How is number of teeth related to the age of a child?
2. At what age, a person gets 32 teeth?
3. What do you understand by heterodont and diphyodont?
4. What values are reflected from Kavita's behaviour?

What makes species a basic taxonomic category?

What is meant by P-Q interval and S-T interval in electrocardiography?

What is complex III in ETS of mitochondria? What is its function?

Describe the following: Bivalent Draw a diagram to illustrate your answer.