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Which one of the following statements about all the four of Spongilla, Leech, Dolphin and Penguin is correct?
1. Penguin is homiothermic while the remaining three are poikilothermic
2. Leech is a fresh water form while all others are marine
3. Spongilla has special collared cells called choanocytes, not found in the remaining three
4. All are bilaterally symmetrical
Spongilla has special collared cells called choanocytes, not found in the remaining three
Q. Into which classes is the phylum Annelida divided? The phylum is divided into three classes: hirudineans (e.g., leeches), oligochaetes (for example, earthworms) and polychae
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Aim: To prove that oxygen is evolved during photosynthesis. Apparatus: Beaker, funnel, test tube, water, Hydrilla plants. Procedure: Take a few pieces of Hydrilla plant. Keep a
Ask question what is classification of livibg thingsMinimum 100 words accepted#
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