1512 + Interview Questions in Biology in Class 9 Page 26 InterviewSolution

1251.	Question : How would you differentiate between phagocytosis and exocytosis ?
Answer» Solution :Phagocytosis is the INTAKE of solid particles by a cell through plasma membrane, WHEREAS, exocytosis is the PROCESS thatinvolves FUSION of membrane of the exocytotic vesicle with the plasma membrane to extrude its CONTENTS to the surrounding medium.

Discussion

1252.	Question : Application of ..............has been found to increase yield of wheat, rice, maize and sorghum.
Answer» SOLUTION :AZOTOBACTER

Discussion

1253.	Question : How would you choose between two characteristics to be used for developing a hierarchy in classification ?
Answer» Solution : The gross character that is shown by the organism forms the BASIS of the hierarchy in which organisms are ORGANIZED. (2) The finer characters which are further seen MAKES this organism to be placed in a particular group. (3) The similarities and the differences NOTED in the BODY designs make the development of the hierarchy at the time of classification.

Discussion

1254.	Question : Anthrax is caused by
Answer» VITAMIN DEFICIENCY BACTERIA VIRUS fungas Answer :B

Discussion

1255.	Question : How would a person develop those diseases that don't spread by contact with a sick person?
Answer» Solution : People can develop DISEASES other than INFECTIVE diseases either through malnourishment or due to genetic causes. WRONG habits of ALCOHOLISM, smoking or drugs can ALSO lead to diseases.

Discussion

1256.	Question : Answer the following questions related to the experiment "To make a temporary stained mount of onion peel." 1. Which stain would you use to stain onion peel ? 2. How would you remove extra stain from the slide ?
Answer» Solution :1. IODINE solution as STAIN. 2. EXTRA stain will be removed using BLOTTING paper.

Discussion

1257.	Question : Answer the following questions : (i) Cheek cells are the part of which type of epithelium ? (ii) Where is 'nucleus' usuallly located in a plant cell and in animal cells ? (iii) Name the outermost covering of a plant cell.
Answer» Solution :(i) Squamous epithelium that LINES the buccal cavity. (II) In a plant cell, nucleus is USUALLY located on one side of cell, whereas, in an ANIMAL cell, it is usually located in the centre of the cell. (iii) Cell wall.

Discussion

1258.	Question : How will you differentiate between vermicrompost, green manure and bio-fertilizer ?
Answer» SOLUTION :Vermicompost is a kind of manure derived from organic wastes by the activity of earthworms which promote soil AERATION, crush and mix soil particles and CONVERT the nutrients into SIMPLER forms. This manure is rich in organic matter and nutrients. Green manure is a kind of manure which is prepared by the decomposition of green plants (e.g., sun hemp, SWEET, clover, cow pea, barseem, cluster beam etc.) in the field itself. These green plants are mulched by ploughing and then allowed to decompose by the activity of bacteria and fungi of decay in the field. Bio-fertilizer. Living organisms (e.g., blue green algae) which are used as fertilizers to supply nutrients to plants are termed biofertilizers.

Discussion

1259.	Question : Anjali is an orphan girl studying in Standard Second. She is detected to be HIV positive. Her parents died due to AIDS infection. The school Principal has decided to discontinue her from school due to her HIV status. Answer the following questions based on this narration : (1) Is it right to discontinue Anjali from the school ? Justify your answer ? (2) How did Anjali, who is so young become HIV positive? (3) What values can be seen if Anjali is allowed to be in school ?
Answer» Solution :(1) It is not just to remove Anjali from the school. HIV positive person cannot transmit the virus by casual contact. Thus other children or teacher MAY not be affected due to Anjali.s status. Moreover, orphan Anjali has to be helped in getting education. She should be treated with EMPATHY and love. Therefore, it is not right to discontinue Anjali from the school. (2) Anjali MUST have contracted HIV through her mother EITHER during foetal development or throush breast milk Since her mother died in AIDS, that measns she was the onc to transmit HIV to little Anjali. (3) If Anjali is allowed to be in school, it shows that the school authorities are aware of details about AIDS. There are no MISCONCEPTIONS about AIDS and HIV. Also empathy and compassion is seen when Anjali is treated well. Social equality is evident by such behavior.

Discussion

1260.	Question : How willyou differentiate the different types of transpiration?
Answer» Solution :There are three types of transpiration: Stomatal transpiration : Loss of water from plants through stomata. It accounts for 90 - 95 % of the water transpired from LEAVES. Cuticular transpiration: Loss of waterin plants through the cuticle. Lenticular transpiration: Loss of water from plants as vapour through the lenticels. The lenticels are TINY openingsthat protrude from the barks in woody stems and twigs as well as in other plant organs. But transpiration is necessary for the FOLLOWING reasons. 1. It createsa pull in leaf and stem. 2. It creates anabsorption force in roots. 3. It isnecessary for continuous supply of minerals. 4. It REGULATES the TEMPERATURE of the plant.

Discussion

1261.	Question : Animals of which class are not cold blooded ?
Answer» FISHES AMPHIBIA REPTILIA AVES SOLUTION :Aves

Discussion

1262.	Question : How we maintain the health of the heart?
Answer» Answer :Proper food HABIT and REGULAR exercise play an important role in reducing THELEVEL of fat in BLOOD.

Discussion

1263.	Question : Animal husbandry.
Answer» Solution :The SCIENTIFIC management of ANIMAL LIVESTOCK is called animal HUSBANDRY.

Discussion

1264.	Question : How the food grains should be dried on commerical basis ?
Answer» SOLUTION :By USING MECHANICAL DRIER.

Discussion

1265.	Question : Animal cells are commonly stained with ......
Answer» METHYLENE BLUE acetocarmine safranin iodine solution Answer :B

Discussion

1266.	Question : Angiospermic plant can be monocot or dicot.
Answer» ANSWER :T

Discussion

1267.	Question : How the constrast is enhanced in an electron microscope ? Where the image is obtained ?
Answer» Solution :Ultra-thin and DRY section of material under study is IMPREGNATED with some metal to ENHANCE the constrast. IMAGE is obtained on a PHOTOGRAPHIC filim or screen.

Discussion

1268.	Question : Angiospermic plants are Phanerogams (flowering plant) without bearing fruit.
Answer» ANSWER :F

Discussion

1269.	Question : How principle of immunization is implemented for eliminating polio ?
Answer» Solution :(1) There is a peculiar property of the immune system that usually fights off microbial infections. (2) In immunization, the infectious microbe is introduced in the body in mild doses. (3) The body cells respond towards these infectious microbes and remember this SPECIFICALLY. (4) Later when this particular microbe enters the body, the body cells concerned with immune response react against these infectious microbes with GREATER vigour. (5) The immune response is based on the memory of the PREVIOUS exposure. (6) On this same principle. the oral dose of polio vaccine is given to all the children below 5 years in India. This is done with the (7) This is done on the same day throughout the country. This scheme is KNOWN as pulse polio programme. (8) The successful implementation of this will eliminate the polio from our county.

Discussion

1270.	Question : Analyse the process and answer the questions. Give one example of this process from daily life.
Answer» ANSWER :FERMENTING BATTER to SOFTEN it

Discussion

1271.	Question : Analyse the process and answer the questions. What is the common term for the process?
Answer» ANSWER :FERMENTATION

Discussion

1272.	Question : How much time is required for the completion of digestion ?
Answer» ANSWER :4 to 5 HOURS

Discussion

1273.	Question : Analyse the flowchart and answer the following questions Which blood circulation is shown in this illustration
Answer» ANSWER :PORTAL CIRCULATION

Discussion

1274.	Question : how much of food is required for desi hen to produce 12 eggs ?
Answer» 2 KG 6 kg 12 kg 1 kg ANSWER :B

Discussion

1275.	Question : Analyse the flowchart and answer the following questions Complete the flowchart
Answer» ANSWER :A - HEPATIC PORTAL VEIN B - Hepatic vein

Discussion

1276.	Question : How may nutrients are essetial for plants and how many of them are obtained from soil?
Answer» SOLUTION :16 and 13

Discussion

1277.	Question : An opening through which air passes in and out of the body is called .......
Answer» ANSWER :NOSTRIL

Discussion

1278.	Question : How many times did you fall ill in the last one year? Whatwere the illness? (a) Think of one change you could make in your habitsin order to avoid any of most of the above illnesses.(b) Think of one change you would wish you in yoursurrounding in order to avoid any of /most of theabove illness. The illness was 2-3 times, common - cold, occurred in a year.
Answer» SOLUTION :One change I would make in my habits in order to avoid the above illness is that I would take proper DIET RICH in VITAMIN C and would avoid too cold food.The surroundings should be neat and CLEAN.

Discussion

1279.	Question :An Italian variety Apis mellifera has been introduced in India for honey production. Write about its merits over other varieties.
Answer» ANSWER :N/a

Discussion

1280.	Question : An internal factor responsible for spoilage of food is ……………………
Answer» Wax coating CONTAMINATED utensils MOISTURE CONTENT in food Synthetic preservatives ANSWER :C

Discussion

1281.	Question : How many times did you fall ili in the last one year? What were the illnesses ? Think of one change you could make in your habits in order to avoid any of/ most of the above illnesses.
Answer» Solution :The answer will differ and will be based on Individual experiences of EVERY student. The following changes will be done to avoid illnesses and infections (1) The immunity for fighting against infections will be enhanced by having proper and nourishing food. (2) Fruits and vegetables will be INCORPORATED into diet which gives lots of vitamins and minerals. (3) Regular exercise will be undertaken for having healthy body. (4) Roadside catables and dirty contaminated water will never be used. (5) Vaccinations will be taken In case of OUTBREAK of epidemics. (6) MOSQUITO bites will be prevented by using mosquito repellant devices and creams.

Discussion

1282.	Question : Among infectious agents .........multiply very slowly.
Answer» ANSWER :WORMS

Discussion

1283.	Question : How many of these health-related events wouldhappen long after the actual disaster, but wouldstill be because of the disaster ?
Answer» Solution :After the initial shock of the DISASTER, therewill be a phase of recovery. But most of the affected ones will show post TRAUMATIC stress disorder or PTSD. Those who are INJURED will need further treatment and assistance. After the cyclone recedes, still people become vulnerable for the infections due to contaminated water and FOOD. The effects seen after the calamity is over arelisted above.

Discussion

1284.	Question : Amoebic dysentery is caused by plasmodium.
Answer» SOLUTION :Amoebic dysentery is CAUSED by protozoa ENTAMOEBA histolytica.

Discussion

1285.	Question :How many of these ways we can think of are events that would occur when the disaster isactually happening ?
Answer» Solution :When the disaster is ACTUALLY happening, peoplewill be affected to a great extent. Initially there would be threat to their lives. If they are SAVED, they are traumatized and NEED medical help. Instant death or fractures and loss of BODY parts are the EFFECTS seen in people who are victims of natural disasters.

Discussion

1286.	Question : Amoeba and Paramoecium are unicellular organism.
Answer» ANSWER :1

Discussion

1287.	Question : How many of you took antibiotics (ask yourparents if you had antibiotics)?
Answer» Solution :For cough and cold USUALLY there is noantibiotic TREATMENT given. Cold is a viral DISEASE and gets cured on its own within 4 to 5 days. Only in case of continuing coughor fever, doctor PRESCRIBES the antibiotics.

Discussion

1288.	Question :Amoeba acquires its food through .......... (diffusion, ectocytosts, endocytosis)
Answer» SOLUTION :ENDOCYTOSIS

Discussion

1289.	Question : How many ions of Na^(+) and K^(+) are pumped out and in sodium-potassium exchange pump for each molecule of ATP used ?
Answer» Solution :`3 Na^(+)` are PUMPED out and `2 K^(+)` are pumped in for each molecule of ATP used.

Discussion

1290.	Question : Amit is observing temporary mount of an onion peel stained with safranin under a microscope. The colour of the cell wall appears...
Answer» DEEP blue black pinkish red yellow Answer :D

Discussion

1291.	Question : All the factors of biosphere which affect the ability of organisms to survive and reproduce are called as ...............
Answer» BIOLOGICAL FACTORS ABIOTIC factors biotic factors physical factors Solution :abiotic factors

Discussion

1292.	Question : How many eggs does a desi hen produce per year ?
Answer» 200 250 60 150 Answer :C

Discussion

1293.	Question : All multicellular organisms arise from only one cell.
Answer» ANSWER :1

Discussion

1294.	Question : How many eassential elements are obtained by plants from soil?
Answer» 12 13 14 15 Answer :A::C

Discussion

1295.	Question : All fishes have scales.
Answer» ANSWER :F

Discussion

1296.	Question : How many chloroplasts will be there in one square millimeter of a leaf?
Answer» ANSWER :At an AVERAGE 5 LAKH CHLOROPLASTS

Discussion

1297.	Question : How many chambers are present in the heart of : (i) Fishes , (ii) Frog ?
Answer» SOLUTION :(a) TWO, (B) THREE

Discussion

1298.	Question :Air sacs and pneumatic bones are seen in .............
Answer» fish frog bird bat ANSWER :C

Discussion

1299.	Question : AIDS is called a final disease
Answer» Solution :When a person is infected with HIV, his or her body immune system COLLAPSES. The person becomes very WEAK and loses weight. Such person catches all kinds of infections. The DEATH is inevitable DUE to such types of infections and hence AIDS becomes a fatal DISEASE.

Discussion

1300.	Question : How long were those who took antibiotics ill?How long were those who didn't take antibiotics ill?
Answer» SOLUTION :The PATIENTS who were ill for more thana week usually take antibiotics. Those who start FEELING WELL within two days, do nottake antibiotics.

Discussion

Explore topic-wise InterviewSolutions in .

Question : How would you differentiate between phagocytosis and exocytosis ?

Question : Application of ..............has been found to increase yield of wheat, rice, maize and sorghum.

Question : How would you choose between two characteristics to be used for developing a hierarchy in classification ?

Question : Anthrax is caused by

Question : How would a person develop those diseases that don't spread by contact with a sick person?

Question : Answer the following questions related to the experiment "To make a temporary stained mount of onion peel." 1. Which stain would you use to stain onion peel ? 2. How would you remove extra stain from the slide ?

Question : Answer the following questions : (i) Cheek cells are the part of which type of epithelium ? (ii) Where is 'nucleus' usuallly located in a plant cell and in animal cells ? (iii) Name the outermost covering of a plant cell.

Question : How will you differentiate between vermicrompost, green manure and bio-fertilizer ?

Question : How willyou differentiate the different types of transpiration?

Question : Animals of which class are not cold blooded ?

Question : How we maintain the health of the heart?

Question : Animal husbandry.

Question : How the food grains should be dried on commerical basis ?

Question : Animal cells are commonly stained with ......

Question : Angiospermic plant can be monocot or dicot.

Question : How the constrast is enhanced in an electron microscope ? Where the image is obtained ?

Question : Angiospermic plants are Phanerogams (flowering plant) without bearing fruit.

Question : How principle of immunization is implemented for eliminating polio ?

Question : Analyse the process and answer the questions. Give one example of this process from daily life.

Question : Analyse the process and answer the questions. What is the common term for the process?

Question : How much time is required for the completion of digestion ?

Question : Analyse the flowchart and answer the following questions Which blood circulation is shown in this illustration

Question : how much of food is required for desi hen to produce 12 eggs ?

Question : Analyse the flowchart and answer the following questions Complete the flowchart

Question : How may nutrients are essetial for plants and how many of them are obtained from soil?

Question : An opening through which air passes in and out of the body is called .......

Question :An Italian variety Apis mellifera has been introduced in India for honey production. Write about its merits over other varieties.

Question : An internal factor responsible for spoilage of food is ……………………

Question : How many times did you fall ili in the last one year? What were the illnesses ? Think of one change you could make in your habits in order to avoid any of/ most of the above illnesses.

Question : Among infectious agents .........multiply very slowly.

Question : How many of these health-related events wouldhappen long after the actual disaster, but wouldstill be because of the disaster ?

Question : Amoebic dysentery is caused by plasmodium.

Question :How many of these ways we can think of are events that would occur when the disaster isactually happening ?

Question : Amoeba and Paramoecium are unicellular organism.

Question : How many of you took antibiotics (ask yourparents if you had antibiotics)?

Question :Amoeba acquires its food through .......... (diffusion, ectocytosts, endocytosis)

Question : How many ions of Na^(+) and K^(+) are pumped out and in sodium-potassium exchange pump for each molecule of ATP used ?

Question : Amit is observing temporary mount of an onion peel stained with safranin under a microscope. The colour of the cell wall appears...

Question : All the factors of biosphere which affect the ability of organisms to survive and reproduce are called as ...............

Question : How many eggs does a desi hen produce per year ?

Question : All multicellular organisms arise from only one cell.

Question : How many eassential elements are obtained by plants from soil?

Question : All fishes have scales.

Question : How many chloroplasts will be there in one square millimeter of a leaf?

Question : How many chambers are present in the heart of : (i) Fishes , (ii) Frog ?

Question :Air sacs and pneumatic bones are seen in .............

Question : AIDS is called a final disease

Question : How long were those who took antibiotics ill?How long were those who didn't take antibiotics ill?