4951 + Interview Questions in Biology in Class 10 Page 5 InterviewSolution

201.	Question : When breeding takes place between animals of the same breed, it is called outbreeding
Answer» SOLUTION :Correst statement: When breeding takes PLACE between ANIMALS of the same BREED, it is calle INBREEDING.

Discussion

202.	Question : Whenanydryplantmaterialis kept in water, theyswellup .Nameand definethephenomenoninvolvedin thischange .
Answer» Solution :The SWELLING up is due to Imbibition. Imbibition is a TYPE of DIFFUSION in which a solid ABSORBS water and GETS swelled up. If Imbibition were not there, seedlings would not have been able to emerge out of the soil.

Discussion

203.	Question : When animals feed on other dead animals, which had died naturally or had been killed by another animals, the relationship is termed as
Answer» PREDATION COMPETITION SCAVENGING symbiosis Answer :C

Discussion

204.	Question : When an insect sits on the flower of a plant them some particles A present in the top of little stalks in the flower attachto its body hair. When this insect now sitson the flower of another similar plant,then particles A attached to the hair of insect are put on the top of a flask-shaped organ at the centre of flower. The particle A grows a long tube B from the top of flask-shaped organ through which C moves down and reaches the bottom part of flask-shaped organ. Here C fuses with the nucleus of D contained in structure E. the fusion of C and D formsa new cell F wich grows and develops into a seed of the plant.? (a) What are particles A ? What is the process of transferring A from one flower to another flower of similar plant by the insect of known as? (b) What is the name of tube B? (c) What is C which moves down through the tube B? ltbr? (d)Name D and E. (e) What is F?
Answer» SOLUTION :N//A

Discussion

205.	Question : When an individual is having both the alleles of contrasting characters it is said to be
Answer» heterozygous dioecious monoecious linked genes Answer :A

Discussion

206.	Question :When an allele fails to express itself in F, generation in the presence of other allele, the former is said to be
Answer» RECESSIVE codominant complementary epistatic Answer :A

Discussion

207.	Question : When a true breeding tall plant is crossed with a true breeding short plant and the F_(1)produced is self pollinated to produce F_2 ratio of true breeding tall and true breeding short plant in F_2 will be
Answer» `1:2` `1:1` `2:1` `1:3` ANSWER :B

Discussion

208.	Question : When a sportsman runs, he gets muscle cramps. Why ?
Answer» SOLUTION :During RUNNING, the sportsmanrequires large amount of energy INSTANTLY. In order to releasemore energy, pyruvateis converted into LACTICACID in the absence of oxygen. ACCUMULATION of lactic acidin themusclescauses cramps.

Discussion

209.	Question : When a raisin is placed in a concentrated sugar solution, it
Answer» swell up shows no change SHRINKS DIES Answer :C

Discussion

210.	Question : When a population of animal 'X. is introduced into the biotic community of an ecosystem, the number of lions increased while the number of deer decreased. Which is correct option for animal 'X'?
Answer» SOLUTION :X ANIMAL is a predator of deer and a PREY of LION.

Discussion

211.	Question : When a person rotates rapidly for a sustained period of time it results in the sensation of dizziness and impaired ability to walk steadily. This is because
Answer» the hair cells of ampulla are damaged endolymph comes in CONTACT with tectorial membrane the horizontal and vertical canals are STIMULATED the VESTIBULAR branch of the AUDITORY nerve is pressed Answer :D

Discussion

212.	Question : When a moist slice of bread was kept aside for a few days then some organism grew on it to from a white, cottony mass which later turned black. When this slice of bread was observed through a magifying glass, Then fine thread-like projections and thin stems having bulb-like structures at the top were seen. (a) What is the common name and scientific name of the organism which grew on the slice of bread (b) How did this organism grow on the moist slice of bread automatically? (c) What are the fine, thread-like projections on the surface of slice of bread known as ? (d) What name is given to the knob-like structures and what do they contain? (e) What is the name of this method of reproduction? (f) Name one unicellular organism which reproduces by this method. (g) Name two non-flowering plants which reproduce by this method.
Answer» SOLUTION :N//A

Discussion

213.	Question : When a mature egg leaves the ovary, it enters the
Answer» follicle endometrium interstitial CELLS oviduct Answer :D

Discussion

214.	Question : When a human female reaches a certain age then vaginal bleeding occures for a few days after regular time intervals. (a) What is this process known as (i) inscientific terms, and (ii) in everyday language ? (b) At what approximate age this process starts in humanfemales ? What is the human female said to have attained at this stage? (c) After how much time as this process repeated ? For how many days this process usually lasts? (d) What does the onset of this process in human signify? (e) At which particularevent in the life of a human female this process stops temporarily but starts again (f) At which approximate event in the life of a human female thisprocess stops permanently?
Answer» SOLUTION :N//A

Discussion

215.	Question : When a fertilised egg E formed in the oviduct of a humanfemale divofrd retatedly to from an embryo, the embryo gets implanted in the thick and soft lining of the uterus. After this a disc-like special tissue T develops between the uterus wall and embryo through which all the requirementsof the developing embryo (andfoetus) are net from hte mother's body. The embryo is connected to the tissue T througha string like structure S. (a) What is the other name of fertilised egg cell E? (b)What in thename of tisssue T? (c) Name the string-like structure S (d) Name two substances which pass from mother's bloodto embryo through tissue T and, one type of substance whichpasses from embryo to mother's bool. (e) What happents to S when the baby is born ? Why?
Answer» SOLUTION :N//A

Discussion

216.	Question : When a female child is born, her ovaries already contian thousands of immature eggs (or ova) contained in immature structures A. On maturing, A bursts opne and and egg shootscut of the ovary in a process called B. The proces B starts in the female aftera time period x. Before every occurence of processs B, the inner lining of uterus becomesthick and soft withlots of blood vessels in it. When the egg cell gets ferilised by a sperm, then an event C ocures in the life of mature human female which lasts for time period y leading to the birth of baby. If however, the egg cell released by theovary does not get a sperm to fuse with, then the thick and soft inner lining of uterus breaks down and comes out of the female's body in an event called D. The occurrence of event D is controlled by chemical substances E. (a) What are A? (b) What is process B ? (c) What is the time period x? (d) Name the event C. (e) How muchis the period y ? (f) What is the name of process D? (g) Name the chemical substances E.
Answer» SOLUTION :N//A

Discussion

217.	Question : When a cell reproduces, what happens to its DNA?
Answer» Solution :When a cell reproduces, its DNA gets TRANSFERRED from parents to the offspring where it gets REPLICATED, producing two COPIES of DNA. When the cell divides into two, these two copies are distributed equally between the two DAUGHTER cells so that similar amount and type of DNA is transferred from the PARENT cell to the daughter cells.

Discussion

218.	Question : When a cell is fully turgid which of the following will be zero?
Answer» WALL PRESSURE suction pressure osmotic pressure turgour pressure ANSWER :B

Discussion

219.	Question : When a broken piece of the stem hof a plant X is plnated in the soil, a new plant grows from it in a week's time. The leaves of plant X also have many small entities Y in their margins which can fall to the ground alone or alongwith leaves and grow into new plants. (a) Name a plant which X could be. (bWhat are the entities Y present on the leaves of X known as ? (c) Name a plant other than X which can be reproduced from its leaves. (d) Name a common plant grown in many homes which can be propagated from its broken stams like plant X. (e) Name a kind of dormant organs present in dry stems of old grass plants lying in the field which get activated and produce green grass plants after the rains.
Answer» SOLUTION :N//A

Discussion

220.	Question : When a big fish eats a small fish, which eats water fleas supported by phytoplankton, the water fleas are
Answer» PRIMARY consumers SECONDARY consumers top CONSUMER in this FOOD chain producers Answer :A

Discussion

221.	Question : Which of the following is a plant hormone ?
Answer» INSULIN THYROXIN OESTROGEN CYTOKININ ANSWER :D

Discussion

222.	Question : What would have been the result if there were to be vegetative propagation in humans?
Answer» Solution :i] All humans WOULD LOOK alike, in whom vegetative propagation has taken place. II] There would have been moral and ethical ISSUES due to similar humans. iii] There would be very less GENETIC variations. iv] Immunity against diseases would be diminished.

Discussion

223.	Question : Whatwould happen to theleaves ofa plantthattranspiresmorewaterthanitsabsorptionin theroots?
Answer» SOLUTION :When transpiration exceeds than water absorption by ROOTS, the plant DEHYDRATES. It affacts, plant PROCESSES such as growth, PHOTOSYNTHESIS and transpiration.

Discussion

224.	Question : What would happen if vas efferentia of man were cut?
Answer» SPERMS BECOME non-nucleate SEMEN is WITHOUT sperms sperms are nonmotile spermatogenesis does not occur Answer :B

Discussion

225.	Question : (i) Write a note on euploidy. (ii) What would happen if the habitat of wild animals is disturbed?
Answer» Solution :If the HABITAT of wild animals DISTURBED, the biological diversity cannot be maintained and cannot promote the ECONOMIC ACTIVITIES, which GENERATES revenue to the government.

Discussion

226.	Question : What would happen if green plants disappeared from the Earth?
Answer» Solution :Green plants are the sources of energy for all organisms. If all green plants disappear from the EARTH, all the herbivores will DIE DUE to STARVATION and so will the CARNIVORES.

Discussion

227.	Question : What would be your role in environment management?
Answer» Solution :(i) Attempts at various leavels are performed for conserving environment. (ii) Some levels are as follws: (a) Conservation: Conserving the available RESOURCES. (b) Control: Preventing the harm, stopping HARMFUL activities, changingthe mindset. (c) Production: Attempting innovation, revival of harmed factors of environment. (d) PREVENTION: Preventing paossible harms, factors farmful to environment and designing new plans. (e) Preservation: Preserving whatever has been leftover, remedies to prevet further LOSS, preservingunknown regions. (f) Awareness: Education, Guidance, Awareness, Imitation, Organizaton, Participation.

Discussion

228.	Question : What would be the reason for adopting contraceptive methods ?
Answer» Solution :USE of condom, copper T are common methods. Contraceptives are used to CONTROL the unwanted CHILD birth. These are also used to prevent certain sexually transmitted diseases LIKE AIDS, syphilis, etc.

Discussion

229.	Question : What would be the ratio of chromosome number between an egg and its zygote? How is the sperm genetically different from the egg?
Answer» Solution :The RATIO is 1:2. Sperms contain EITHER X or Y CHROMOSOME WHEREAS an egg will ALWAYS have an X chromosome.

Discussion

230.	Question : What would be the consequence of deficiency of haemoglobin in our bodies ?
Answer» Solution :HAEMOGLOBINIS a carrierof oxygen. Deficiency of HAEMOGLOBIN will advversely affect the supply of oxygen to the cells, causing anaemia.Secondly AEROBIC respiration will beaffected leading to weakness,painand impropermetabolism.

Discussion

231.	Question : What would be the consequencesof a deficiency of haemoglobin in our bodies ?
Answer» SOLUTION :HAEMOGLOBIN is a pigmentpresent in RBC. It has a hightaffinity for oxygen.It carries `O_(2)`from lungsto VARIOUS TISSUES which are deficientin oxygen. Presenceof less haemoglobin will result in less supply of `O_(2)`to oxygen deficienttissues. A person havingless haemoglobin will get tired soon and willhave a palelook.

Discussion

232.	Question : What would be the consequence of a deficiency of haemoglobin in our body?
Answer» Solution :The deficiency of haemoglobin in our body is called anaemia. In anaemia, the BLOOD is unable to carry the SUFFICIENT amount of oxygen required by the body. So, respiration would be less and less ENERGY will be available to the body. The haemoglobin deficient person will FEEL weak, pale, lethargic and will be unable to perform heavy PHYSICAL work.

Discussion

233.	Question : What would be the advantages of : exploiting resources with short-term aims?
Answer» Solution :The advantages of exploiting resources with short-term aims are as FOLLOWS: (1) We will able to meet current basic human needs. (2) It will be beneficial for the present generation. (3) There will be rapid industrial growth, AGRICULTURAL growth and hence, economic development.

Discussion

234.	Question : What would be expected to happen if : you forget to add cytokinin to the culture medium.
Answer» SOLUTION :SHORT but FORMATION will not OCCUR

Discussion

235.	Question : What would be expected to happen if : GA_3is applied to rice seedling
Answer» Solution :HYPER elongation of intenodes of rice SEEDLINGS will OCCUR

Discussion

236.	Question : What would be expected to happen if : a rotten fruit get mixed with unripe fruits.
Answer» SOLUTION :Unripe fruit s will LEAD to early ripening and ULTIMATELY it will result in rottening.

Discussion

237.	Question :What would be expected to happen ifa. Gibberellin is applied to rice seedlings. b. A rotten fruit gets mixed with unripe fruits. c. When cytokinin is not added to culture medium
Answer» Solution :(a) When gibberellins is applied, it stimulates, the extraordinary elongation of internode. (b) The mass of undifferentiated cell is called callus. If the rotten fruits get MIXED with unripe fruits, then the ETHYLENE produced from the rotten fruits, will HASTEN the ripening of theunripe fruits. (c) If cytokinin is not added to the CULTURE medium, then the cell division, growth and DIFFERENTIATION will not be observed.

Discussion

238.	Question : What will you do to prevent leaf fall and fruit drop in plant ? Support your answer with reason.
Answer» Solution :(a) Very chill deposition on leaves and fruits cause the DROP in plants. Protect the tree from frost providing an overhead COVER. (b) The plant hormone ETHYLENE CONTROLS fruit ripening, FLOWER wilting and leaf fall by stimulating the conversion of starch and acids to sugar.

Discussion

239.	Question : What will you do if someone pricks yourhand with a needle? Elucidate the pathway of response with a neat labelled diagram.
Answer» Solution : The PATHWAY taken by NERVE impulse to accomplish reflex action is called reflex arc. (a) When the hand is pricked by a NEEDLE, the stimulus is the prick (touch) pain, which is sensed by receptor called as touch or pain receptors in the skin in our hand. This stimulus inturn triggers an impulse in sensory NEURON. (b) The sensory neuron transmits or conveys the message to the spinal cord. (c ) The spinal cord interprets the stimulus and the impulse is passed on to the relay neuron, which inturn transmits it to a motor neuron. (d) Motor neurons carry command from spinal cord to our arm. (e) Muscle in our arm contracts and we withdraw our hand immediately from the needle prick. Muscle is the effector organ which has responded to the prick (pain).

Discussion

240.	Question : What will lead to change in body designs ?
Answer» Solution :The DNA in the CELL nucleus is the INFORMATION SOURCE for making PROTEINS. If the information is changed, different proteins are formed leading changes in body designs.

Discussion

241.	Question : What will happen to a plant if its xylem is removed?
Answer» SOLUTION :The xylem tissue transports water and minerals from the soil to the LEAVES of a plant for photosynthesis. If xylem is removed, upward MOVEMENT of water will stop leading to wilting of leaves and ultimately causes DEATH of a plant.

Discussion

242.	Question : What will happen to a plant if its xylem is removed ?
Answer» Solution :Movement of water and MINERAL from SOIL to otherparts of plant will STOP and theplantwill ultimatelydie it itsxylem is REMOVED.

Discussion

243.	Question : (a) Differentiate the following monocot root and Dicot root. (b) What will happen if you cut planaria into small fragments?
Answer» Solution :BREAKING of fragments of Planaria RESULTS into many fragments. Each FRAGMENT having one cell, will give RISE to a NEW Planaria, by cell division.

Discussion

244.	Question :What will happen if we kill all the organisms in one trophic level ?
Answer» Solution : If we kill all the ORGANISMS in one trophic level, the number of individuals in the NEXT trophic level will decrease due to non-availability of food. ALSO the number of individuals in the previous trophic level will INCREASE because there is no one to feed on them. This will cause imbalance in the environment.

Discussion

245.	Question : What will happen if trees are cut down ?
Answer» Solution :Soil EROSION occurs and ecological IMBALANCE TAKE PLACE, if TREES are cut down.

Discussion

246.	Question : What will happen if there is no mitosis at all in living organisms ?
Answer» Solution :(1) If mitosis is not PRESENT growth and development of organism will not TAKE PLACE . (2) Wound healing does not take place .

Discussion

247.	Question : What will happen if mucus is not secreted by the gastric glands?
Answer» Solution :Gastric GLANDS in stomach release hydrochloric ACID, ENZYME pepsin and mucus. Mucus protects the inner lining of stomach from the action of hydrochloric acid and enzyme pepsin. If mucus is not released, it will lead to erosion of inner lining of stomach, leading to ACIDITY and ULCERS.

Discussion

248.	Question : What will happen if mucus is not secreted by the gastric glands ?
Answer» SOLUTION :Mucus is SECRETED in the stomach where HCI is alsoreleased. Mucus PROTECTS the GASTRIC liningfrom the HCIwhichmay corrode the inner liningin absence of mucus.

Discussion

249.	Question : What will happen if number of consumers in environment goes on increasing gradually?
Answer» Solution :If number of CONSUMERS go on increasing, it will affet the population of PRODUCERS and other consumers DISTURBING the balance of the ECOSYSTEM.

Discussion

250.	Question : What will happen if deer is missing in the food chain given below ? Grass to Deer to Tiger
Answer» The population of tiger increases. The population of grass decreases. Tiger will start eating grass. The population of tiger decreases and the population of grass increases. Solution :Tiger will not be ABLE to GET its FOOD (deer). Therefore, the population of tiger decreases. As grass is not being CONSUMED, population of grass increases.

Discussion

Explore topic-wise InterviewSolutions in .

Question : When breeding takes place between animals of the same breed, it is called outbreeding

Question : Whenanydryplantmaterialis kept in water, theyswellup .Nameand definethephenomenoninvolvedin thischange .

Question : When animals feed on other dead animals, which had died naturally or had been killed by another animals, the relationship is termed as

Question : When an individual is having both the alleles of contrasting characters it is said to be

Question :When an allele fails to express itself in F, generation in the presence of other allele, the former is said to be

Question : When a true breeding tall plant is crossed with a true breeding short plant and the F_(1)produced is self pollinated to produce F_2 ratio of true breeding tall and true breeding short plant in F_2 will be

Question : When a sportsman runs, he gets muscle cramps. Why ?

Question : When a raisin is placed in a concentrated sugar solution, it

Question : When a population of animal 'X. is introduced into the biotic community of an ecosystem, the number of lions increased while the number of deer decreased. Which is correct option for animal 'X'?

Question : When a person rotates rapidly for a sustained period of time it results in the sensation of dizziness and impaired ability to walk steadily. This is because

Question : When a mature egg leaves the ovary, it enters the

Question : When a cell reproduces, what happens to its DNA?

Question : When a cell is fully turgid which of the following will be zero?

Question : When a big fish eats a small fish, which eats water fleas supported by phytoplankton, the water fleas are

Question : Which of the following is a plant hormone ?

Question : What would have been the result if there were to be vegetative propagation in humans?

Question : Whatwould happen to theleaves ofa plantthattranspiresmorewaterthanitsabsorptionin theroots?

Question : What would happen if vas efferentia of man were cut?

Question : (i) Write a note on euploidy. (ii) What would happen if the habitat of wild animals is disturbed?

Question : What would happen if green plants disappeared from the Earth?

Question : What would be your role in environment management?

Question : What would be the reason for adopting contraceptive methods ?

Question : What would be the ratio of chromosome number between an egg and its zygote? How is the sperm genetically different from the egg?

Question : What would be the consequence of deficiency of haemoglobin in our bodies ?

Question : What would be the consequencesof a deficiency of haemoglobin in our bodies ?

Question : What would be the consequence of a deficiency of haemoglobin in our body?

Question : What would be the advantages of : exploiting resources with short-term aims?

Question : What would be expected to happen if : you forget to add cytokinin to the culture medium.

Question : What would be expected to happen if : GA_3is applied to rice seedling

Question : What would be expected to happen if : a rotten fruit get mixed with unripe fruits.

Question :What would be expected to happen ifa. Gibberellin is applied to rice seedlings. b. A rotten fruit gets mixed with unripe fruits. c. When cytokinin is not added to culture medium

Question : What will you do to prevent leaf fall and fruit drop in plant ? Support your answer with reason.

Question : What will you do if someone pricks yourhand with a needle? Elucidate the pathway of response with a neat labelled diagram.

Question : What will lead to change in body designs ?

Question : What will happen to a plant if its xylem is removed?

Question : What will happen to a plant if its xylem is removed ?

Question : (a) Differentiate the following monocot root and Dicot root. (b) What will happen if you cut planaria into small fragments?

Question :What will happen if we kill all the organisms in one trophic level ?

Question : What will happen if trees are cut down ?

Question : What will happen if there is no mitosis at all in living organisms ?

Question : What will happen if mucus is not secreted by the gastric glands?

Question : What will happen if mucus is not secreted by the gastric glands ?

Question : What will happen if number of consumers in environment goes on increasing gradually?

Question : What will happen if deer is missing in the food chain given below ? Grass to Deer to Tiger