4951 + Interview Questions in Biology in Class 10 Page 19 InterviewSolution

901.	Question : What are 3R approach in the effective waste management?
Answer» Solution :Reduce, Reuse and Recycle are the 3R approach for the effective waste management. Reducing the amount of waste, we produce is the BEST WAY to help the environment. Buying products with MINIMUM packaging, not borrowing things which we do not use often, starting a compost bin, saving energy and WATER by turning are ways to reduce. Reuse materials in their original form or pass those materials on to others, who could use them. Paper cardboard, metals, plastics and textiles, etc can be RECYCLED. The compost or reuse of bio-degradable wastes is also a kind of recycling.

Discussion

902.	Question : What are abiotic factors ? Write examples.
Answer» Solution :All inanimate and non-living things are together termed as abiotic factors. Abiotic factors are divided further into physical and CHEMICAL factors. (a) Physical components: SUNLIGHT, TEMPERATURE, Heat, HUMIDITY. (b) Chemical components: Air, water, soil, MINERALS, gases, chemical compounds.

Discussion

903.	Question : What among the following covers the long bones at their ends?
Answer» ADIPOSE tissue Arcolar tissue Spongy bones Muscles Answer :C

Discussion

904.	Question : What advantage over the aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration ?
Answer» Solution :Terrestrial animals can BREATHE the oxygen in the ATMOSPHERE but animals those LIVE in water need to USE the oxygen DISSOLVED in water.

Discussion

905.	Question : What allows us to make classification groups ?
Answer» SOLUTION :On the basis of similarities and fundamental differences AMONG ORGANISMS, a HIERARCHY is developed that is used in MAKING classification groups.

Discussion

906.	Question : What advantage over an aquatic organism does a terrestrial organism have withregard to obtaning oxygen for respiration ?
Answer» SOLUTION :The amount of `O_(2)`dissolved in water is less as COMPARED to `O_(2)`in air. Hence, aquatic organismsneed to breathe faster. THUS, TERRESTRIAL organismsspend less ENERGY in obtaining `O_(2)`

Discussion

907.	Question :What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration ?
Answer» Solution : The AQUATIC organisms USE OXYGEN dissolved in water while TERRESTRIAL organisms obtain it from the ATMOSPHERE, where the amount of oxygen is much higher.

Discussion

908.	Question : What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
Answer» Solution :The organism that LIVES in water such as a fish obtains oxygen for respiration which is dissolved in water. Whereas the terrestrial organisms take in oxygen directly from the air. Since, the amount of oxygen dissolved in water is fairly low as compared to the amount of oxygen in the air, BREATHING RATE in aquatic organisms is MUCH faster than terrestrial organisms.

Discussion

909.	Question : In what way is the anomalous behaviour of water advantageous to aquatic animals ?
Answer» Solution :(1) Normally the FERTILIZED ovum (zygote) develops into a young one . But the unfertilized ovum also develops into a young one GENERALLY the MALE. (2) The process of development of young ones from unfertilized ovum is called parthenogenesis. (3) In this process sperms develop by mitotic DIVISION whereas ova develop by meiotic division. (4) This strange kind of reproduction occurs in ANIMALS like bees and wasps.

Discussion

910.	Question :Weismann cut off tails of mice generation but tails neither disappeared nor shortened showing that
Answer» DARWIN was correct tail is an ESSENTIAL organ mutation THEORY is WRONG Lamarckism was wrong in inheritance of acquired characters Answer :D

Discussion

911.	Question : We usually get all the minerals we need from
Answer» roughage minerals in water mineral tablets food Answer :D

Discussion

912.	Question : We should take care of the environmental components of our surroundings.
Answer» Solution :Both biotic and ABIOTIC factors are IMPORTANT in maintaining ecological BALANCE. (i) Our surroundings represent an ecosystem. (ii) In recent years, due to certainharmful human activities, pollution has increased. (iii) Due to this rise in levels of pollution, our health has deteriorated. (iv) The EXISTENCE of humans is entirely dependent on the existence of biotic and abiotic COMPONENTS,hence, we must conserve nature.

Discussion

913.	Question : We saw in this chapter that there are four main stakeholders when it comes to forests and wildlife. Which among these should have the authority to decide the management of forest produce? Why do you think so?
Answer» Solution :Out of the four main stakeholders, the LOCAL people living near the forest areas should given the authority to decide the MANAGEMENT of forest PRODUCE. Because these people know the traditional methods to USE the natural resources in sustainable MANNER. These local people have been using the forest and wildlife resources since the ancient times without causing any damage to environment.

Discussion

914.	Question : We do not clean ponds or lakes, but an aquarium needs to be cleaned regularly. Explain.
Answer» Solution :A pond is a COMPLETE, natural and self-sustaining ecosystem whereas an aquarium is an artificial and incomplete ecosystem, without decomposers THEREFORE it needs REGULAR CLEANING for proper running.

Discussion

915.	Question :"We cannot pass on to our progeny the experiences and qualifications earned during our life time". Justify the statement giving reason and examples.
Answer» Solution :We acquire knowledge and skills in our LIFETIME such as learning DANCE, music, PHYSICAL fitness, ETC. But these skills cannot be PASSED to our progenies because: (i) Such characters or experiences acquired during one.s lifetime do not bring any change in the DNA of the germ cell. (ii) Only germ cells are responsible for passing on the characters from the parents to the progeny.

Discussion

916.	Question : Why cannot the experiences of an individual during its lifetime be passed on to its progeny?
Answer» SOLUTION :Experiences achieved during the lifetime of an individual does not make any change in the gene of the individual. For example, if a person READ a book on birds, the knowledge he earns by reading the book does not make any change in the gene. Hence, this knowledge will not GET automatically TRANSMITTED to his next generation. Such trait is called acquired trait.

Discussion

917.	Question : We can built up the evolutionary relationships of species by identifying hierarchies of characteristics between them. Explain.
Answer» Solution :Classification refers to the arrangement of organisms into different groups on the basis of similarities-dissimilarities and placing them in a hierarchy that reveals their relationship. `rarr` The groups of organisms are classified on the basis of definite characteristics. They provide the information and explanation about their EVOLUTIONARY aspects. `rarr` They classified according their are characteristics. Classification of organisms based on evolution: `rarr` Some basic characteristics are common in most organisms. Cell is a structural and functional unit of LIFE for all. The characteristics in the next level of classification would be common for most, but not all organisms. `rarr` Organisms can be classified into two different groups, i.e., EUKARYOTES and prokaryotes on the basis of whether their CELLS possess well defined nucleus and membranous organelles or not. `rarr` Organisms having well defined nucleus are of two types depending on number of cells : Unicellular and multicellular. `rarr` Organisms can even be classified into plants and animals on the basis of photosynthetic property. `rarr` In the multicellular organisms, the tissues, organs, organ systems, etc., are distinctly developed in plants and animals. In animal bodies the exoskeleton around the body and the endoskeleton inside the body have different basic form and are therefore different from each other. Thus, a hierarchy DEVELOPS evolutionary relationships among organisms which allow us to make classification groups. The more characteristics have common in two species, the more closely they are related. And the more closely they are related, the more recent common ancestor they will have. Thus, classification of species is infact a reflection of their evolutionary relationship.

Discussion

918.	Question : We can cut the DNA with the help of _____.
Answer» SCISSORS RESTRICTION ENDONUCLEASES knite RNAase Solution : restriction endonucleases

Discussion

919.	Question : Watson and Crick composed the model of DNA structure in
Answer» 1953 1943 1955 1963 Answer :A

Discussion

920.	Question : Water will be absorbed by root hairs when
Answer» CONCENTRATION of solutes in the CELL sap is high plant is RAPIDLY respiring they are separated from SOIL by a permeable membrane concentration of salts in the soil is high ANSWER :A

Discussion

921.	Question : Water pollutants
Answer» SOLUTION :DOMESTIC WASTES, INDUSTRIAL effuents

Discussion

922.	Question : Water logged soil is
Answer» physically as WELL as physiologically dry physically WET but physiologically dry physically dry physically as well as physiologically wet Answer :B

Discussion

923.	Question : Water isabsorbed from undigested food in which part of alimentary canal ?
Answer» SOLUTION :Largeintestine is the PART of ALIMENTARY canal which is the siteforreabsorbtion of water from undigested FOOD.

Discussion

924.	Question : Water cycle, nitrogen cycle, oxygen cycle, carbon cycle.
Answer» SOLUTION :WATER CYCLE- OTHERS aregaseous CYCLES

Discussion

925.	Question : Water cycle is made up of two overlapping cycles,
Answer» surface waters and atmospheric CYCLES OCEANIC and fresh WATER cycles GROUND water and atmospheric cycles global and smaller cycles Answer :D

Discussion

926.	Question : Warm ocean surge of Peru current recurring every 5-8 years or so in the East Pacific of South America is widely known as
Answer» GULFSTREAM AyeAye EL NINO Mangox ANSWER :C

Discussion

927.	Question : Vulnerable species
Answer» Solution :The organisms which are EXTREMELY less in NUMBER and continue to decline are called vulnerable SPECIES.

Discussion

928.	Question : Voluntary Organizations engaged in environmental activities in India.
Answer» SOLUTION :Bombay Natural HISTORY SOCIETY, Mumbai.(BNHS)

Discussion

929.	Question : Vomiting centre is located in_____
Answer» MEDULLA OBLONGATA stomach cerebrum hypothalamus ANSWER :A

Discussion

930.	Question : Voluntary and involuntary actions.
Answer» Solution :`{:("S.No","Voluntary Action","INVOLUNTARY Action"),(1.,"The actions which are under the control of our will EG. EATING, walking.","The actions, which are not under our control. eg. Breathing, Heat beat"),(2.,"Controlled by the brain.","Controlled by the spinal cord."),(3.,"Voluntary Action result in a muscular action.","Involuntary actions result in a muscular action or secretions of some glands."):}`

Discussion

931.	Question : Volume of air inspired and expired with each normal breath is called
Answer» TIDAL VOLUME inspiratory capacity total LUNG capacity residual volume ANSWER :A

Discussion

932.	Question : Vocal cords occur in
Answer» pharynx glottis bronchial tube larynx ANSWER :D

Discussion

933.	Question : Vitamins with some enzymes act as
Answer» coenzyme apoenzyme holoenzyme cofactor Answer :A

Discussion

934.	Question : Vitamins are
Answer» INORGANIC SUBSTANCES that cannot by SYNTHESISED by animal inorganic SUBSTANCE that can be synthesised by animal organic substances that cannot be synthesised by animal organic substances that can be synthesised by animal Answer :C

Discussion

935.	Question : Vitamin that is destroyed on heating
Answer» VITAMIN D vitamin C vitamin A vitamin K Answer :B

Discussion

936.	Question : Vitamin needed for blood coagulation is
Answer» E D K C Answer :C

Discussion

937.	Question : Vitamin K is used for
Answer» FORMATION of prothrombin activation of prothrombin formation of fibrinogen formation of thrombloplastin Answer :A

Discussion

938.	Question : Vitamin B_(2) is related with
Answer» FMN/FAD NAD NADH ATP Answer :A

Discussion

939.	Question : Vitamin A is responsible for
Answer» rhodopsin night blindness pellagra cirrhosis Answer :A

Discussion

940.	Question : Vitamin A is produced from carotene in
Answer» blood skin intestinal tract liver Answer :C

Discussion

941.	Question : Visual programming was developed in the ..................
Answer» SOLUTION :MASSACHUSETTS INSTITUTE of TECHNOLOGY (MIT)

Discussion

942.	Question : Visit a nearby village and collect information how farmers grow sugarcane, flowering plants like chrysanthemum, prime-rose and vegetables like stem tubers, plumpgourd (dondakaya), ect. Make a report and present in class.
Answer» Solution :I VISITED to a nearby village and collected the following information about growing of different plants from farmers. (1) sugarcane : (a) Farmers use stem cuttings for growing sugarcane crop. (b) They place the stem cutting horizontally in the furrow but not upright. (c) Shorts will START to grow from the nodes of the stem breaking through the soil to form individual sugarcane stalks. (2) Chrysanthemum: (a) It is grown from its seeds and also by means of cuttings. (b) Farmes place seeds and cuttings of chrysanthemum where amount of sun. (c) The well -draining soil is required when planting. (d) Enough water should be given at intervals. (3) Prime-rose : (a) Primeroses that are healthy in appearence preferbly with unopened buds are utilised for growing. (b) Primeroses can also be grown from seeds with an equal mixture of soil, sand peatmoss. (c) Generally seeds are sown indoors during winter. (d) Once seendings have obtained their second or third leaves they can be transplanted in the garden. (e) Cuttings can also be taken from some varieties during summer to grow prime-roses. (4) Stem TUBERS (Potato): (a) They are mainly propagated by vegetative methods (cloning). (b) Potato tubers have nodes or eyes from which new growth begins. (c) Cegetative seed can be either a WHOLE tuber or cut tuber. (d) Most potato cultivating farers produce tubers. Each tuber contain several eyes, tuber with eye cut and sow in soil. (5) Plumpgourd ( Dondakaya): (a) Farmers usually sow seeds of plump gourd to grow a new crop. (b) Stem cuttings are also being used by farmers to grow plumpgourd crop. (c) First they dig the soil to make burrows. Moist the furrow before planting the stem cutting upright. (d) A FTER 35 to 45 days lateral buds begin to grow from the nodes of stem cuttings .

Discussion

943.	Question : Viruses that cause jaundice survive in
Answer» lungs liver kidneys stomach Answer :B

Discussion

944.	Question : Vidya is a married woman who has a cleft chin (a deep hollow in her chin). Vidya has recently been blessed with a baby girl who has also a cleft chin. Anita is a close friend of Vidya. When she learnt that Vidya's baby girl also has a cleft chin like Vidya, she got worried. The is because Anita has a huge scar on her left cheek which remained permanently after she got a cut on the cheek during an accident which took placein her school days. Anita is worried that her baby (which is due shortly), may also have a scar on her left cheek just like her. One day, Anita's niece Radha, who is a science student of class X, came to see her. Anita shared her apprehension with Radha. Radha could understand her problem. She told Anita that her case is entirely different from that of Vidya. Radha explained everything to Anita clearly. Anita was now very much relaxed. (a) What is an acquired trait ? (b) What is an inherited trait ? (c ) What type of trait is (i) cleft chin, and (ii) cheek scar ? (d) Explain why, Vidya's cleft chin has been passed on to her baby but Anita's cheek scar cannot be passed on to her baby. (e) What values are displayed by Radha in this episode ?
Answer» Solution :(a) A TRAIT (or CHARACTERISTIC) of an organism which is 'not inherited' but develops in response to the environment, is called an acquired trait. Acquired trait involves changes only in the non-reproductive cells of an organism and hence cannot be passed on to the next generation. (b) A trait (or characteristic) of an organism which is caused by a change in the genes (or DNA) present in the reproductive cells (or gametes) of parent organism is called inherited trait. Inherited trait can be passed on the next generation. (c ) (i) Cleft chin is an inherited trait. (ii) Cheek scar is an acquired trait. (d) Vidya's cleft chin trait has been passed on to her baby because it is an inherited trait INVOLVING reproductive cells (or gametes). ANITA's cheek scar cannot be passed on to her baby because it is an acquired trait involving only non-reproductive body cells. (e) The values displayed by Radha in this episode are (i) Awareness (or knowledge) of acquired traits and inherited traits (ii) Application of knowledge in real-life situations, and (III) concern for the health of Anita during pregnancy (by reducing her tension).

Discussion

945.	Question : Very little useable energy remains after
Answer» two TROPHIC levels three trophic levels four trophic levels. five trophic levels. Solution :Very little usable ENERGY is LEFT after four trophic levels.

Discussion

946.	Question : Vermiform appendix is made up of
Answer» RESPIRATORY TISSUE excretory tissue lymphatic tissue digestive tissue ANSWER :C

Discussion

947.	Question : 'Venus Flower Basket' is the name of the dried skeleton of
Answer» euspongia spongilla euplectella leucosolenia ANSWER :C

Discussion

948.	Question : Venom of cobra effects on
Answer» RESPIRATORY SYSTEM NERVOUS system excretory system digestive system ANSWER :B

Discussion

949.	Question : Vegetative reproduction takes place from the following
Answer» STEM, ROOTS, flowers Stem, FLOWER, fruits Stem, roots, LEAVES Stem, leaves, flower Answer :C

Discussion

950.	Question : Vegetative reproduction refers to formation of new plants from
Answer» STEM, leaves and seedling stem, ROOTS and flowers. stem, root and leaves. stem, flower and fruits. Solution :In plants root, stem and leaves are the VEGETATIVE PARTS.

Discussion

Explore topic-wise InterviewSolutions in .

Question : What are 3R approach in the effective waste management?

Question : What are abiotic factors ? Write examples.

Question : What among the following covers the long bones at their ends?

Question : What advantage over the aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration ?

Question : What allows us to make classification groups ?

Question : What advantage over an aquatic organism does a terrestrial organism have withregard to obtaning oxygen for respiration ?

Question :What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration ?

Question : What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?

Question : In what way is the anomalous behaviour of water advantageous to aquatic animals ?

Question :Weismann cut off tails of mice generation but tails neither disappeared nor shortened showing that

Question : We usually get all the minerals we need from

Question : We should take care of the environmental components of our surroundings.

Question : We saw in this chapter that there are four main stakeholders when it comes to forests and wildlife. Which among these should have the authority to decide the management of forest produce? Why do you think so?

Question : We do not clean ponds or lakes, but an aquarium needs to be cleaned regularly. Explain.

Question :"We cannot pass on to our progeny the experiences and qualifications earned during our life time". Justify the statement giving reason and examples.

Question : Why cannot the experiences of an individual during its lifetime be passed on to its progeny?

Question : We can built up the evolutionary relationships of species by identifying hierarchies of characteristics between them. Explain.

Question : We can cut the DNA with the help of _____.

Question : Watson and Crick composed the model of DNA structure in

Question : Water will be absorbed by root hairs when

Question : Water pollutants

Question : Water logged soil is

Question : Water isabsorbed from undigested food in which part of alimentary canal ?

Question : Water cycle, nitrogen cycle, oxygen cycle, carbon cycle.

Question : Water cycle is made up of two overlapping cycles,

Question : Warm ocean surge of Peru current recurring every 5-8 years or so in the East Pacific of South America is widely known as

Question : Vulnerable species

Question : Voluntary Organizations engaged in environmental activities in India.

Question : Vomiting centre is located in_____

Question : Voluntary and involuntary actions.

Question : Volume of air inspired and expired with each normal breath is called

Question : Vocal cords occur in

Question : Vitamins with some enzymes act as

Question : Vitamins are

Question : Vitamin that is destroyed on heating

Question : Vitamin needed for blood coagulation is

Question : Vitamin K is used for

Question : Vitamin B_(2) is related with

Question : Vitamin A is responsible for

Question : Vitamin A is produced from carotene in

Question : Visual programming was developed in the ..................

Question : Visit a nearby village and collect information how farmers grow sugarcane, flowering plants like chrysanthemum, prime-rose and vegetables like stem tubers, plumpgourd (dondakaya), ect. Make a report and present in class.

Question : Viruses that cause jaundice survive in

Question : Very little useable energy remains after

Question : Vermiform appendix is made up of

Question : 'Venus Flower Basket' is the name of the dried skeleton of

Question : Venom of cobra effects on

Question : Vegetative reproduction takes place from the following

Question : Vegetative reproduction refers to formation of new plants from