Photosynthesis — Biology STD 11 Science — Question

Student while observing a slide of leaf section observed many stomata on the upper surface. He thought he has placed slide upside down. Teacher confirmed it is rightly placed. Explain.

Explain the absorption of disaccharides through the cell membrane.

Observe the following diagram and answer the questions based on it.
1. Identify the part ‘X’ in the given diagram.
2. What is the chemical property of the part ‘X’.

Explain the term totipotency.

Enlist the various disorders and diseases related to the excretory system.

Give an account of cuboidal epithelium.

Explain the tertiary and quaternary structure of protein with example.

The gastrovascular cavity in cnidarians

Students were asked to observe various tissues under a microscope during their college practical. The teacher explained the various types of tissues. While observing the tissues students had some doubts. They approached the teacher regarding their doubts in practical.
1. How are the skeletal muscle fibres and smooth muscle fibres identified based on their structure?
2. Which type of muscles are found in the myocardium?

Botanical gardens are important in botanical studies. Justify.