Plant Kingdom — BIOLOGY STD 11 Science — Question

Explain anaerobic breakdown of glycogen in muscles and its effect.

ATP produced during glycolysis is a result of substrate level phosphorylation. Explain.

Write one feature of sweet pea of each of following:

1. Flower onoman.
2. Calyx w ollen ZET.
3. Corolla onyo.
4. Androecium.
5. Gynoecium.
6. Fruit.

Write a short account on herbarium as a taxonomic aid.

With the help of well-labelled diagrams, describe the process of plasmolysis in plants, giving appropriate examples.

What is the benefit of cell walls, in plant cells?

Biology teacher was teaching cell cycle in the class. She taught that cell is the basis from which life exists. Also explained well about cell cycle. Robin who was a bright student was facing difficulties in understanding the topic he reached home and asked her sister who is a student of biology in a college about details of cell cycle and cell theory. She explained him that according to cell theory, cells arise from pre-existing cells and the process involved is cell division. Sexually reproducing organisms start their life from a single cell, called zygote, and cell divisions do not stop with the formation of a mature organism, but continue throughout the life.

1. What is meant by cell cycle?
2. Which is the actual phase of cell division?
3. When (at what phase) do the cell organelles duplicate?
4. What values are reflected from the Robin's concern?

Explain the terms:

1. Basidiocarp.
2. Basidia.
3. Basidiospores.

In which fields taxonomical aids are helpful? Why taxonomic aids are used in these studies? Which different taxonomical aids are used by the biologists?

Write the functions in brief in Column B, appropriate to the structures given in Column A.

1. Nictitating membrane __________.
2. Tympanum __________.
3. Copulatory pad __________.