Write true/false. If false correct the statement
1. Gills are located on either side of the throat and are covered by an operculum.
2. The stem of the cactus is reduced to spines to reduce the loss of water.
3. All seeds have two cotyledons:
4. Proteins are digested in to fatty acids.
5. The Amoeba has no fixed shape.
Answers
Answer:
1 Fish gills are organs that allow fish to breathe underwater. Most fish exchange gases like oxygen and carbon dioxide using gills that are protected under gill covers (operculum) okn both sides of the pharynx (throat). Gills are tissues that are like short threads, protein structures called filaments.
2 The leaves of 'cactus' are reduced to 'spines' to prevent the loss of water by transpiration. EXPLANATION: Leaves lose water by the process of transpiration but cactus grows in deserts and cannot afford to lose water. The spines of the cactus store water.
3No,all seeds do not have two cotyledons. Monocots have only one cotyledon
4 false
5Due to the presence of cells of irregular shapes, amoeba is irregular in shape. The shape of cells is related to its functions. These cells make crawling-type of movements by protruding their cytoplasm which results in the formation of irregular projections from its body called pseudopodia.
Explanation:
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