Exercise
- How you place the pea, jawar and fern at its proper systematic position? Draw a flow chart with example of.
- Complete the following table
|
Characteristic |
Chlorophyceae |
Phaeophyceae |
Rhodophyceae |
|
1. Stored food |
True starch |
Mannitol, laminarin, starch |
Floridean starch |
|
2. Cell Wall |
Cellulose |
Cellulose and algin |
Cellulose and pectin |
|
3. Major pigments |
Chlorophyll a & b |
Chlorophyll a, c & Fucoxanthin |
Chlorophyll a, d & Phycoerythrin |
|
4. Habitat |
Fresh water (few marine) |
Marine (rarely fresh) |
Marine & Fresh water |
|
5. Size range |
Microscopic to small |
Filamentous to large |
Thalloid variable |
|
6. Economic use |
Food supplement |
Food, hydrocolloids |
Agar-agar, tissue culture |
- Differentiate between Dicotyledonae and Monocotyledonae based on the following characters a. Type of roots b. Venation in the leaves c. Symmetry of flower
- Answer the following questions
A. We observe that land becomes barren soon after monsoon. But in the next monsoon it flourishes again with varieties we observed in season earlier. How you think it takes place?
B. Fern is a vascular plant. Yet it is not considered a Phanerogams. Why?
C. Chlamydomonas is microscopic whereas Sargassum is macroscopic; both are algae. Which characters of these plants includes them in one group?
D. Which of the following nuts will not be enclosed in fruits? What are the peculiar characteristics of these plants? Betel nut/ Areca nut, pine nut, walnut, almond, cashew nut, nutmeg.
- Girth of a Maize plant does not increase over a period of time. Justify
- Radha observed a plant in rainy season on the compound wall of her school. The plant did not have true roots but root-like structures were present. Vascular tissue was absent. To which group the plant may belong?
