Q. The nitrogenous waste-uric acid is excreted out by -
1) Human
2) Birds
3) Lizards
4) Birds and Lizards both
Q. The main cause of algal blooming in an aquatic ecosystem is -
1) Global warming
2) Salination
3) Eutrophication
4) Bio-magnification
Q. In curd, which bacteria are found in abundance?
1) Salmonella sps.
2) Lactobacillus sps.
3) E. coli
4) All of these
Q. Which of the following is the main causative agent of rabies?
1) Bacteria
2) Virus
3) Fungus
4) Parasite
Q. Which of the following is not a natural polymer?
1) Silk
2) Cellulose
3) Rubber
4) Plastic
Q. Fluoride pollution mainly affects to -
1) Kidney
2) Teeth
3) Eyes
4) Nervous System
Q. Name the chemical substance present in the bones and teeth -
1) Calcium Sulphate
2) Calcium Phosphate
3) Calcium Chloride
4) Calcium Borate
Q. Areolar connective tissue is found between -
1) Muscles and bones
2) Skin and bones
3) Skin and muscles
4) None of the above
Q. The covering or protective tissues in the animal body are -
1) Connective tissues
2) Muscular Tissue
3) Adipose Tissue
4) Epithelial Tissue
Q. Organisms of which of the following phylum are called sponges?
1) Coelenterata
2) Platyhelminthes
3) Porifera
4) Echinodermata
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