Science

Question: Birds differ from bat in the absence of - 1. Warm Blood 2. Four Chambered heart 3. Trachea 4. Diaphragm Answer: 2 Question: Which one of the following is important strategy for the conservation of biodiversity ? 1. Biosphere Reserve 2. Botanical gardens 3....

Question: Which one of the following air pollution can affect blood stream leading to death ? 1. Asbestos dust 2. Cadmium 3. Lead 4. Carbon monodioxide Answer: 4 Question: Which one of the following is bio indicator of air pollution ? 1. Fern 2. Lichen 3. Money Plant...

Question: The percentage of plasma in the total blood volume in human beings is about 1. 45 2. 50 3. 55 4. 60 Answer: 3 Question: Which of the following animals does not make any sound? 1. Blue whale 2. Giraffe 3. Jaguar 4. Uma Answer: 2 Question: The deficiency of...

Question: Why does a foul smell emanate from some ponds, tanks, etc.? 1. Pesticides and other organic chemicals reach the water body and kill off fishes, etc., living therein, causing the foul smell 2. Fertilizers used in farming reach the water body and give rise to...

Question: Litmus is extracted from 1. Turmeric 2. Bark of Cinchona 3. Lichens 4. Mushroom Answer: 3 Question: Which of the following is an endangered species? 1. Black buck 2. Blue sheep 3. Gangetic dolphin 4. Mithun Answer: 3 Question: Which one of the following...

Question: The malaria parasite responsible for malignant malaria is - 1. Plasmodium malariae 2. Plasmodium falciparum 3. Plasmodium vivax 4. Plasmodium ovale Answer: 2 Question: Hypothermia occurs due to loss of excessive heat from body due to sudden low body...

Question: Contraceptive pills in the market contain 1. Herbicides 2. Antibiotics 3. Steroid hormones 4. Inorganic compounds Answer: 3 Question: Master copy of genetic information is 1. r-RNA 2. m-RNA 3. DNA 4. Nucleus Answer: 3 Question: Which of the following is...

Question: Which of the following statements about sexual reproduction in flowering plants are correct? 1. Stamen is present in the centre of a flower. 2. Stamen produces pollen grains in the ovary. 3. The swollen bottom part of carpel is the ovary. 4. The fusion of...

Question: The function of endoplasmic reticulum is 1. Acrosome formation 2. Lysosome formation 3. Synthesis of steroid hormones 4. Secretion of proteins Answer: 3 Question: What role does enzyme pepsin play? 1. It converts fats into acids 2. It converts fats into...

Question: Usually when tomatoes are plucked they are green. They become red later because the 1. Chloroplast disappears and new chromoplasr arises 2. Chloroplast gets converted into chromoplast 3. Chromoplast gets converted into chloroplast 4. None of the above...