InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 501. |
Question : The antibiotic -Penicillin is effective on several types of bacteria but not effective on infectious virus. |
| Answer» Solution :The antibiotics used in the treatment of diseases cause obstruction in the BIOCHEMICAL path of the activities of pathogens and destroy them. As per taxonomy, all types of bacteria are closely related to each other. Most of their physiological (biological) activities are SIMILAR. The antibiotic Penicillin obstructs the biochemical path of cell wall formation in bacteria. As a result, it obstructs the cell wall formation of newly formed bacteria which die CONSEQUENTLY. As per taxonomy, the viruses do not belong to the group of bacteria. All viruses LIVE only inside the host cells. Viruses can SHOW their path of life activities only in the host cells and that is different from that of bacteria. Hence, the antibiotic-Penicillin, which is effective on bacteria, is not effective on viruses. | |
| 502. |
Question : The animals of phylum ......... have a true cavity. (Annelida, Mollusa, Coelenterata) |
| Answer» SOLUTION :ANNELIDA | |
| 503. |
Question :The animals of which phylum are diploblastic (body of two layers of cells)? |
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Answer» Platyhelminthes |
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| 505. |
Question :The animals of class Amphibia respire by gills in larva stage and through slimy skin and lungs in the adult stage. |
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| 507. |
Question : The animal without skull is ............. |
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Answer» Acrania |
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| 508. |
Question : The….&.......changes back to carbon dioxidein the lungs. |
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| 509. |
Question : The ability of water molecules to stick to the walls of xylem vessels. |
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Answer» ROOT pressure |
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| 510. |
Question : Thallophyta, Bryophyta and Pteridophyta are classified as Cryptogamae whereas gymnosperms and angiosperms are classified as Phaenerogamae, why? |
| Answer» Solution :(1) Cryptogamae means those with hidden embryos while PHANEROGAMS means those with seeds. (2) Thallophyta, Bryophyta and Pteridophyta are included under Cryptogamae. (3) All the PLANTS belonging to these classes have naked embryos which are known as spores. ( 4 ) These reproductive organs are inconspicuous and therefore they appear hidden. (5) On the other hand, the gymnosperms and angiosperms have well-differentiated reproductive tissue with seeds. Therefore, gymnosperms and angiosperms are CLASSIFIED as Phanerogams. | |
| 511. |
Question : TB (Tuberculosis) is caused by ......... (virus, protozoan. bacteria) |
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| 512. |
Question : Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now, (a) Keep cup A empty. (b) Put one teaspoon sugar in cup B. (c) Put one teaspoon salt in cup C. (d) Put one teaspoon sugar in the boiled potato cup D. Keep these for two hours. Then observe the four potato cups and answer the following: Explain why water does not gather in the hollowed out portions of A and D. |
| Answer» Solution :In POTATO cup A there is no water. In this there will be no osmosis as it is necessary to have two solutions with different concentrations for the osmosis to OCCUR. In cup D boiling has KILLED the cells and hence there is no semi-permeable membrane for the osmosis to take PLACE. (8) What is cell theory? Give detail about | |
| 513. |
Question : Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now, (a) Keep cup A empty. (b) Put one teaspoon sugar in cup B. (c) Put one teaspoon salt in cup C. (d) Put one teaspoon sugar in the boiled potato cup D. Keep these for two hours. Then observe the four potato cups and answer the following: Why is potato A necessary for this experiment? |
| Answer» Solution :Potato A does not contain anything in its HOLLOW. This potato acts as a CONTROL during the experiment to SEE OSMOSIS. | |
| 514. |
Question : Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now, (a) Keep cup A empty. (b) Put one teaspoon sugar in cup B. (c) Put one teaspoon salt in cup C. (d) Put one teaspoon sugar in the boiled potato cup D. Keep these for two hours. Then observe the four potato cups and answer the following: Explain why water gathers in the hollowed portion of B and C. |
| Answer» Solution :In the potato HOLLOWED and KEPT in B and water gathers. In both these CUPS there are solutions of sugar and salt respectively. Hence the water concentration in the trough and water concentration in the potato CUP will differ from each other. This causes osmosis because potato cells act as a semi-permeable membrane. This causes water to ENTER in the potato cups. | |
| 515. |
Question : Tabulate the enzymes secreted by the digestive glands secrete in a human body. |
| Answer» Solution :`{:("Digestive gland","Enzymes"),("Salivary GLANDS","Ptyalin (Salivary amylase)"),("Gastric glands","Pepsin"),(,"Rennin (in infants)"),("Pancresas","Pancreatic amylase"),(,"Trypsin"),(,"CHYMOTRYPSIN"),(,"Pancreartic lipase"),("Intestinal glands","MALTASE"),(,"Lactase"),(,"SUCRASE"),(,"Lipase"):}` | |
| 516. |
Question : Symptoms and Signs |
Answer» SOLUTION :
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| 517. |
Question : Surface area of both the lungs together turn up to be atleast .... sq. mtrs. |
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| 518. |
Question : Suppose you have a rose plant growing in a pot, how will you demonstrate transpiration in it ? |
| Answer» SOLUTION :Tie a plastic bag over leaves of rose plant and PLACE in sunlight. After a few hours, we see water condensing inside the plastic bag. This is due to LOSS of water in the form of water vapour, which condenses into water. This is due to TRANSPIRATION. | |
| 519. |
Question : Suggest two mcasures that the local authorities of your neighbourhood should take to bring down the incidence of diseases like malaria, typhoid and dengue? |
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Answer» Solution :(1) Malaria and dengue through mosquito which acts as a vector. The stagnant water pools support the life of mosquito and HELP them to breed. In order to eradicate malaria and dengue, the stagnant water pools should be removed. (2) Typhold is spread through the contaminated food and water. The preventive measures therefore should be taken to avoid the contamination of food stuffs. Houseflies should be eradicated by cleaning up the garbage dumps. Sources of water should ALSO be kept CLEAN by not ALLOWING defaęcation near water source bathing in water. |
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| 520. |
Question : Suggest some preventive measures of the diseases of poultry birds. |
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| 522. |
Question : Study some specimens such as moss, fern, pinus, earthworm, cockroach, frog, lizard, sparrow, etc., in school worm, cockroach, frog, lizard, sparrow, etc., in school lab and study their identifying features related to their class. |
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| 523. |
Question : Structually they are membrane-bound sacs filled with digestive enzymes : |
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Answer» MITOCHONDRIA |
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| 524. |
Question : Stomach of human beings mainly digests......................... |
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Answer» Carbohydrates |
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| 525. |
Question : Statement X: Golgi apparatus constitute the another part of a complex cellular membrane. Statement Y: Lysosome is connected in the formation of golgi apparatus. Which alternative is true for statements X and Y? |
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Answer» Both STATEMENTS X and Y are TRUE. |
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| 526. |
Question : State whether true or flase.Rate of pulse is equivalent to that of the heart beat. |
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| 528. |
Question : State whether true or false. There are no cartilaginous rings in the bronchioles. |
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| 529. |
Question : State whether true or false.There are minute pores on the capillary walls. |
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| 530. |
Question : State whether true or false.Plasma is the straw yellow coloured fluid. |
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| 531. |
Question : State whether true or false. Many foldings are seen in the inner wall of small intestine. |
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| 532. |
Question : State whether true or false. Plants also utilize glucose for the production of energy. |
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| 533. |
Question : State whether true or false.Blood transporting oxygen and carbon dioxide. |
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| 535. |
Question : State whether true or false.Aertery carries blood in high speed and high pressure |
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| 536. |
Question : State what will be observed when a de-shelled egg is placed in a concentrated salt solution for five minutes. |
| Answer» Solution :The de-shelled EGG placed in a concentrated, i.e., hypertonic salt solution for five MINUTES will show SHRINKING by LOSING the water through the egg membrane due to OSMOSIS. | |
| 537. |
Question : State two types of plastids. Write one function of each. |
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Answer» SOLUTION :Two types of plastids in plant cells are - (i) Leucoplaste (colourless plastids). These STORE carbohydrates, PROTEINS and LIPIDS in the cells. (ii) Chromoplasts (coloured plastids). Green plastids, e.g., chloroplasts SYNTHESIZE food in the presence of sunlight by the process called photosynthesis. |
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| 540. |
Question : State the name of the animal shown in the figure given and the phylum there of. |
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Answer» SEA LILY, ECHINODERMATA |
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| 541. |
Question : State the full form of ATP. |
| Answer» SOLUTION :ADENOSINE TRIPHOSPHATE | |
| 542. |
Question : State one importance of photoperiod in agriculture. |
| Answer» SOLUTION :Photoperiods are rleated to the DURATION of SUNLIGHT upon which the quality of photosynthesis is dependt. tHis in TURN results in growth and flowring of the plants. | |
| 543. |
Question : State giving reasons whether following statements are correct or not: (i) Our surrounding area should be free from stagnant water. (ii) Staying clean is not necessary as long as you eat a balanced diet. (iii) Social equality and harmony necessary for good health. |
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Answer» Solution :(i) The statement is correct. Mosquitoes breed in the stagnant water. They are vectors that carry parasites of diseases like malaria and dengue. If such stagnant water is in the surrounding area of our house, there is a greater chance of getting infected. Therefore, our surrounding area should be free from stagnant water. (ii) The statement is INCORRECT. By staying clean we can avoid many diseases. Even if we take balanced DIET, the personal cleanliness is also equally important for proper health. Therefore, staying clean is necessary along with consumption of balanced diet. (III) The statement is correct. Good health depends upon the diet, occupation, lifestyle and economic condition of the individual. We have to be happy in order to be completely healthy. This HAPPINESS can einerge only through proper treatment with each other in the society. The harmonious living with our neighbouring population will fetch us good mental and social health. Therefore, it is said that social equality and harmony are necessary for good health. |
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| 544. |
Question : State ehether true or false.Size of ones heart is equal to the size of ones fist. |
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| 545. |
Question : State any two conditions essential for good health. |
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Answer» Solution :(1) Good health means able to FUNCTION well physically, mentally and socially. For achieving this one should be DISEASE FREE and well-nourished. (2) The surrounding environment in which one stays should be clean, hygienic and UNPOLLUTED. It should be without any PARASITES and pathogens. |
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| 546. |
Question : State any two conditions essential for being free of disease. |
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Answer» Solution :(1) The DIETARY habits of a PERSON should be good. He or she should be free from any ADDICTIVE substances. The general lifestyle should be HEALTHY with optimum exercise. (2) The person should have good resistance and immunity to fight against disease-causing agents. |
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| 547. |
Question : State any four ways by which AIDS virus spreads from an infected person to a healthy person. |
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Answer» Solution :Ways of transmission of AIDS are as follows: (1) Contaminated blood contact with a person. (2) Unprotected sexual contact. (3) From pregnant patient MOTHER to her developing foetus. (4) USE of NEEDLES, SYRINGES of infected individuals. |
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| 548. |
Question :Starfish belongs to phylum...... |
| Answer» SOLUTION :ECHINODERMATA | |