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Why are living organisms classified?
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What do we learn from identification of individuals and populations?
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How is a key helpful in the identification and classification of an organism?
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What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?
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Match the following:
| Column I | Column II | ||
| (a) | Operculum | (i) | Ctenophora |
| (b) | Parapodia | (ii) | Mollusca |
| (c) | Scales | (iii) | Porifera |
| (d) | Comb plates | (iv) | Reptilia |
| (e) | Radula | (v) | Annelida |
| (f) | Hairs | (vi) | Cyclostomata and Chondrichthyes |
| (g) | Choanocytes | (vii) | Mammalia |
| (h) | Gill slits | (viii) | Osteichthyes |
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Prepare a list of some animals that are found parasitic on human beings.
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Name the three basic tissue systems in the flowering plants. Give the tissue names under each system.
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How is the study of plant anatomy useful to us?
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Mark the odd one in each series:
(a) Areolar tissue; blood; neuron; tendon
(b) RBC; WBC; platelets; cartilage
(c) Exocrine; endocrine; salivary gland; ligament
(d) Maxilla; mandible; labrum; antennae
(e) Protonema; mesothorax; metathorax; coxa
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Match the terms in column I with those in column II:
| Column I | Column II | ||
| a | Compound epithelium | 1 | Alimentry canal |
| b | Compound eye | 2 | Cockroach |
| c | Septal nephridia | 3 | Skin |
| d | Open circulatory system | 4 | Mosaic vision |
| e | Typhlosole | 5 | Earthworm |
| f | Osteocytes | 6 | Phallomere |
| g | Genitalia | 7 | Bone |
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Which of the following is not correct?
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Cell is the basic unit of life. Discuss in brief.
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Explain the composition of triglyceride.
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Can you attempt building models of biomolecules using commercially available atomic models (Ball and Stick models).
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Attempt titrating an amino acid against a weak base and discover the number of dissociating ( ionizable ) functional groups in the amino acid.
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Draw the structure of the amino acid, alanine.
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Differentiate between Diffusion and Osmosis
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All elements that are present in a plant need not be essential to its survival’. Comment.
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following statement are true? If false, correct them: Boron deficiency leads to stout axis.
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Given statement are true? If false, correct them - Every mineral element that is present in a cell is needed by the cell.
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