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Q1. Choose the correct option. (10 Marks, 1 mark each)
1. Who proposed the three-domain system?
2. What is the basic cell type in both Bacteria and Archaea?
3. The size range of most archaea is:
4. Which organelle is absent in bacteria?
5. Which fungal group includes mushrooms and puffballs?
6. Which organism is a freshwater sponge?
7. Which symmetry helps hydra sense from all sides?
8. Spongocoel is lined by:
9. Hydra stung due to:
10. Differentiate between the circulatory systems of cephalopods and other molluscs:
10 multiple choice questions
Q2. Write down short answers of following questions. (20 Marks)
i Differentiate Gymnosperms and angiosperms.
ii Which kingdom is characterized by organisms with chitin in their cell walls and that are mostly decomposers?
iii What are the three-domain system of classification?
iv What is the difference between Archaea and Bacteria in cell wall composition?
v What are the major groups of Archaea?
vi Define binary fission.
vii What makes archaeal membranes more stable than bacterial membranes?
viii How does bacterial morphology help in classification?
ix Identify the kingdom and genus of Allium cepa.
x What is meant by eukaryotic cells?
xi Give two examples of fungi and their importance.
xii State the mode of nutrition in Kingdom Fungi.
xiii How do Protozoa differ from Algae?
xiv Why are algae grouped under protists instead of plants?
xv Which plant groups produce seeds?
15 short answer questions
Q3. Write detailed answers of the following questions. (Answer any 2) (20 Marks)
1. Describe the general characteristics of following animal phyla. (i) Phylum Cnidaria (ii) Phylum Platyhelminthes (iii) Phylum Mollusca (iv) Phylum Arthropoda (v) Phylum Echinodermata
2. Describe the general characteristics of phylum Chordata.
3. Compare & contrast the key features of phylum Porifera and cnidaria.
3 detailed questions (answer any 2)
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