4951 + Interview Questions in Biology in Class 10 Page 4 InterviewSolution

151.	Question : Where do plants get each of the raw materials required for photosynthesis?
Answer» Solution :The raw MATERIALS REQUIRED for photosynthesis are carbon DIOXIDE and water. Plants (terrestrial) get carbon dioxide from environment and water from the soil. Aquatic plants take up `CO_(2)` that is present in DISSOLVED form in water. Water is SIMPLY absorbed by the parts of the plant submerged in water.

Discussion

152.	Question : Where do plants get each of the raw materials required for photosynthesis ?
Answer» SOLUTION :Photosynthesis in plantshas four BASIC requirements - chlorophyll, carbon dioxide, water and light. Chlorophyll is a photosynthetic PIGMENT thatoccurs in chloroplasts found in green aerial parts of plants. TERRESTRIAL plants obtain `CO_(2)`from atmosphere and aquatic plants absorbthe same from water. Water is absorbed by plants from soil throughtheir ROOTS. Natural source of lightis sun but artificial light can alsoprovide energy to plants to carry out the process of photosynthesis .

Discussion

153.	Question : Where do earthworms live ?
Answer» In cowdung In the soil In the INTESTINE of birds In human EXCRETA ANSWER :B

Discussion

154.	Question : Where are they present ?
Answer» SOLUTION :They are FREE in the CYTOPLASM

Discussion

155.	Question : Where are the Nucleic acids digested in human body
Answer» Stomach Large INTESTINE SMALL intestine Mouth Answer :C

Discussion

156.	Question : Where are the fertilised eggs stored in the ma ture proglottid of Taenia?
Answer» Uterus Embryo sac Vagina Oviduct ANSWER :A

Discussion

157.	Question : Where are the following hormones synthesised in plants (a) IAA (b) Gibberellins (c) cytokinins.
Answer» Solution :(a) 1AA = Shoot apex(b) Gibberellin – YOUNG leaves of buds, ROOT TIPS(c) CYTOKININS – Root APICAL meristan

Discussion

158.	Question : Where are the fossil fuels used directly ?
Answer» SOLUTION :In gas stoves, VEHICLES and thermal power plants, FOSSIL fuels are USED directly.

Discussion

159.	Question : Where are testes located in male ?
Answer» In ABDOMINAL cavity In VAS DEFERENS In SCROTUM In penis Answer :C

Discussion

160.	Question : Where are perianth found ?
Answer» SOLUTION :In MONOCOT FLOWERS

Discussion

161.	Question : Where are genes located ? What is the chemical nature of gene ?
Answer» SOLUTION :Genes are located on chromosomes. CHEMICALLY gene is a segment of DNA (DEOXYRIBOSE nucleic ACID).

Discussion

162.	Question : Where are estrogens produced? What is the role of estrogens in the human body?
Answer» Solution :Estrogen, the female sex hormone is produced by the Graafian follicles of the ovary. Role of estrogen: (i) It brings about the changes that occur during puberty. (II) It initiates the process of oogenesis. (iii) It STIMULATES the maturation of OVARIAN follicles in the ovary. (iv) It promotes the DEVELOPMENT of secondary sexual characters (breast development and high pitched voice, ETC).

Discussion

163.	Question : Where are Auxins produced?
Answer» Solution :Auxins are produced at the TIP of stems and roots from where they MIGRATE to the zone of ELONGATION.

Discussion

164.	Question : Where are Annular and Segmental receptors located?
Answer» SOLUTION :Annular receptors are located in each ANNULUS and Segmental receptors are located on the first annulus of each SEGMENT.

Discussion

165.	Question : When you observe the onion peel under the high magnification of the microscope after observing it under low magnification what differences do you see ?
Answer» CELL SIZE appears LARGER Fewer CELLS are seen Cell ORGANELLES look magnified All of these Answer :D

Discussion

166.	Question : How many 176Omega resistors (in parallel) are required to carry 5A on a 220 V line ?
Answer» Solution :We can say that RESISTORS are in parallel if same potential difference is applied across them. For three resistors if we connect them in parallel the EQUIVALENT resistance is R `(1)/(R) = (1)/(R_(1))+ (1)/(R_(2))+ (1)/(R_(3))` For X number of resistors of resistance 176 the equivalent resistance of the resistors connected in parallel is given by ohm.s law as V= IR `R+(V)/(I)` Where ,supply voltage, V=220V current I=5A Equivalent resistance of the combination -R given as `(1)/(R) =x xx (1)/(176)` `R= (176)/(x)` `x= (176 xx I)/(V)= (176 xx 5)/(220)` x= 4

Discussion

167.	Question : When wood is burnt in a limited supply of Oxygen, …………………… is left behind as a residue.
Answer» ANSWER :CHARCOAL

Discussion

168.	Question : When we .......... on the mouse, the popup menu appears.
Answer» RIGHT CLICK left click click right SOLUTION :right click

Discussion

169.	Question : When the right ventricle of heart contracts, the blood goes to
Answer» all PARTS of the body pulmonary arteries aorta lungs ANSWER :D

Discussion

170.	Question : When the hilum, chalaza and micropyle of the ovule lie in the same longitudinal axis, it is known as
Answer» ANATROPOUS OVULE amphitropous ovule campylotropus ovule ORTHOTROPOUS ovule Answer :D

Discussion

171.	Question : When the gases sulphurdioxide and hydrogensulphide mix in the presence of water, the reaction SO_2 + 2H_2S to 2H_2O + 3Soccur. Here hydrogen sulphide is acting as
Answer» an OXIDISING AGENT a REDUCING agent a DEHYDRATING agent a catalyst Solution :a reducing agent

Discussion

172.	Question : When the branches of a plant growing in the field are pulled towards the ground and a part of them is convered with moist soil (leaving the tips of the branches exposed above the ground), then after some time new roots develop from the parts of branches buried in ths soil. On cutting these branches from the parent plant new plants are produced from the cut parts of branches which had developed roots. (a) What is this method or propagation of plants knows as ? (b) What type of branches should a plant have to be able to be propagated by this method? (c) Name any two plants which are grown for thier fruits and propagated by this method (d) Name any two plants which are grown for thier fruits and propagated by this method (e) Name of plant which gets propagated by this method naturally by forming runners (soft horizontal stem running above the ground)
Answer» SOLUTION :N//A

Discussion

173.	Question :When sulphuric acid is added to 1g solid sodiumchloride taken in a test tube, which gas is released? What changes do you observe when you test the gas with dry and wet litmus paper? What conclusion do you draw by this experiment?
Answer» Solution :The gas produced is HCL. Dry blue litmus paper does not change colour but WET litmus paper changes its colour to red. Dry HCI gas is not acidic but HCI solution is acidic. This is because in the presence of water, HCl dissociates to give `H^+`ions. `HCl(g) + H_2O(L) to H_3O^(+) " or " H_(aq)^(+)+ Cl^-`

Discussion

174.	Question : When sperms reach in urethra from testes, secretions from ………………….and ………………….are added with them.
Answer» ANSWER :SEMINAL VESICLES, PROSTATE GLAND

Discussion

175.	Question : When powdered tobacco is taken through nose, it is called ...........
Answer» smoking stimulant SNUFFING c Solution :snuffing

Discussion

176.	Question : When pollen of a flower is transferred to the stigma of another flower of the same plant the pollination is referred to as
Answer» autogamy allogamy xenogamy geitonogamy Answer :D

Discussion

177.	Question : When plants lose the capacity of seed formation then how does reproduction occur in them ?a.By spore formationb.By vegetative propagationc.By fissiond.By regeneration
Answer» By SPORE formation By vegetative PROPAGATION By FISSION By regeneration Answer :A::B

Discussion

178.	Question : When plant diversity is maintained in natural habitat the conservation is called
Answer» in VIVO in VITRO EX situ in situ Answer :D

Discussion

179.	Question : When pea plants showing pair of two different characteristics are bred with each other. {:("Characters","Different characteristics"),("1. Height of Plant","Tall and short"),("2. Shape of seed","Round and wrinkled"):} Answer the following questions : What happens when F_(1) progeny are used to generate F_(2) progeny by self-pollination ?
Answer» SOLUTION :A Mendelian experiment shows that in `F_(2)` progeny some were TALL plants with round seeds and some were SHORT plants with wrinkled seeds. HOWEVER, there would be some `F_(2)` progeny that showed new combinations such as tall with wrinkled seeds and short with round seeds.

Discussion

180.	Question : When pea plants showing pair of two different characteristics are bred with each other. {:("Characters","Different characteristics"),("1. Height of Plant","Tall and short"),("2. Shape of seed","Round and wrinkled"):} Answer the following questions : Which traits are dominant ?
Answer» Solution :TALLNESS and ROUND seeds are dominant traits.

Discussion

181.	Question : When pea plants showing pair of two different characteristics are bred with each other. {:("Characters","Different characteristics"),("1. Height of Plant","Tall and short"),("2. Shape of seed","Round and wrinkled"):} Answer the following questions : What do the progeny of cross made between tall plant with round seeds and a short plant with wrinkled seeds look-like ?
Answer» SOLUTION :All PROGENY are TALL and have ROUND SEEDS.

Discussion

182.	Question : When organisms die, their bodies will decompose and be lost. Then how do we get fossils? Give an example.
Answer» Solution :In most cases when organisms DIE, their bodies decompose and BECOME LOST. But every once in a while, the BODY or at least some parts of the body may be in an environment that does not decompose completely. It is through such preserved traces of living organisms that we get fossils. For example : If a dead insect gets caught in hot mud, it will not decompose quickly, the mud will eventually harden and retain the impression of the body parts of the insect.

Discussion

183.	Question : When muscles get fatigued there is
Answer» more ATP, no glycogen and no LACTIC acid MUCH ATP , more glycogen but much lactic acid little, ATP, and glycogen but much lactic acid little ATP, more glycogen and little lactic acid Answer :C

Discussion

184.	Question : When man eats fish, which feeds on, zoo- planktons, which have eaten small plants. The producer in the chain is
Answer» zooplankton small PLANTS MAN fish ANSWER :B

Discussion

185.	Question : Whenis worldMenstrualHygieneDayobserved ?
Answer» SOLUTION :Every YEAR May 28 is observed as WORLD MENSTRUAL Hygiene Day.

Discussion

186.	Question : When is it said that two species have a common ancestor ?
Answer» Solution :When the two SPECIES show more COMMON characteristics, they are more CLOSELY RELATED. Such two species show that they diverged recently. This indicates that they had a common ANCESTOR.

Discussion

187.	Question : When hybridisation is carried out between a tall (TT) pea plant and a short (tt) pea plant, all the plants (offsprings) show the expression of tallness, because …………………....a.the expression of tallness is dominant.b.the expression of short is dominant.c.the expression of tallness is recessive.d.the character of tallness in pea plant is not controlled by gene T or t.
Answer» the expression of tallness is dominant. the expression of short is dominant. the expression of tallness is recessive. the character of tallness in PEA PLANT is not controlled by GENE T or t. Answer :A::B::C::D

Discussion

188.	Question : When heart contracts to pump blood, the flow has to be unidirectional. This is ensured by
Answer» VALVES muscles SA node Pericardium ANSWER :a,B

Discussion

189.	Question : Whenguardcellslosewaterthe stomaopens
Answer» Solution :Correct STATEMENT: When GUARD cells LOSE WATER, the STOMA closed.

Discussion

190.	Question : When green plants are eaten by primary consumer :
Answer» GREAT deal of energy is transferred. great deal of energy is LOST. there is not net LOSS of energy. there is no transfer of energy. Solution :great deal of energy is lost

Discussion

191.	Question : When germ cells from two parents combine during sexual reproduction, it results in ___________ of chromosome number.
Answer» SOLUTION :re-establishment

Discussion

192.	Question : When greentomatoes turn into red then ,
Answer» CHLOROPLASTS are CHANGED into CHROMOPLASTS chromoplasts are changed into chloroplasts new chromoplasts are MADE all of the above SOLUTION :N/A

Discussion

193.	Question : When frog uses grasshopper as food, then energy flow occurs from ...a.producer to decomposerb.producer to primary consumer.c.primary consumer to secondary consumer.d.primary carnivores to higher carnivores
Answer» PRODUCER to decomposer producer to PRIMARY CONSUMER. primary consumer to secondary consumer. primary carnivores to HIGHER carnivores Solution :primary consumer to secondary consumer

Discussion

194.	Question : When flagella are distributed all around a bacterial cell , the arrangement is called ?
Answer» POLAR random peritrichous encapsulated Solution :N/A

Discussion

195.	Question : When few drops of iodine were poured on a potato slice, the potato turned blue-black in colour. This indicates thatpotato contains
Answer» sugar starch glycogen proteins SOLUTION :Starch TEST is done by IODINE solution whichturns COLOUR of starch blue-black .

Discussion

196.	Question : When does the maximum synthesis of ethylene occur?
Answer» SOLUTION :MAXIMUM synthesis of ETHYLENE occurs during ripening of fruits LIKE APPLES, bananas and melons

Discussion

197.	Question : When does the newly formed DNA copies separate ?
Answer» Solution :NEWLY FORMED DNA COPIES separate when additional cellular APPARATUS is formed at the time of cell division.

Discussion

198.	Question : When does duplication of DNA take place ?
Answer» SOLUTION :Just before CELL DIVISION

Discussion

199.	Question : When did the placenta is formed in the period of pregnency ?
Answer» Solution :It is formed AROUND 12 WEEKS of pregnancy.

Discussion

200.	Question : When diaphragm of man is completely dome shaped it shows
Answer» END of expiration and beginning of inspira TION beginning of expiration and end of inspira tion increased rate of breathing decreased rate of breathing ANSWER :A

Discussion

Explore topic-wise InterviewSolutions in .

Question : Where do plants get each of the raw materials required for photosynthesis?

Question : Where do plants get each of the raw materials required for photosynthesis ?

Question : Where do earthworms live ?

Question : Where are they present ?

Question : Where are the Nucleic acids digested in human body

Question : Where are the fertilised eggs stored in the ma ture proglottid of Taenia?

Question : Where are the following hormones synthesised in plants (a) IAA (b) Gibberellins (c) cytokinins.

Question : Where are the fossil fuels used directly ?

Question : Where are testes located in male ?

Question : Where are perianth found ?

Question : Where are genes located ? What is the chemical nature of gene ?

Question : Where are estrogens produced? What is the role of estrogens in the human body?

Question : Where are Auxins produced?

Question : Where are Annular and Segmental receptors located?

Question : When you observe the onion peel under the high magnification of the microscope after observing it under low magnification what differences do you see ?

Question : How many 176Omega resistors (in parallel) are required to carry 5A on a 220 V line ?

Question : When wood is burnt in a limited supply of Oxygen, …………………… is left behind as a residue.

Question : When we .......... on the mouse, the popup menu appears.

Question : When the right ventricle of heart contracts, the blood goes to

Question : When the hilum, chalaza and micropyle of the ovule lie in the same longitudinal axis, it is known as

Question : When the gases sulphurdioxide and hydrogensulphide mix in the presence of water, the reaction SO_2 + 2H_2S to 2H_2O + 3Soccur. Here hydrogen sulphide is acting as

Question :When sulphuric acid is added to 1g solid sodiumchloride taken in a test tube, which gas is released? What changes do you observe when you test the gas with dry and wet litmus paper? What conclusion do you draw by this experiment?

Question : When sperms reach in urethra from testes, secretions from ………………….and ………………….are added with them.

Question : When powdered tobacco is taken through nose, it is called ...........

Question : When pollen of a flower is transferred to the stigma of another flower of the same plant the pollination is referred to as

Question : When plants lose the capacity of seed formation then how does reproduction occur in them ?a.By spore formationb.By vegetative propagationc.By fissiond.By regeneration

Question : When plant diversity is maintained in natural habitat the conservation is called

Question : When pea plants showing pair of two different characteristics are bred with each other. {:("Characters","Different characteristics"),("1. Height of Plant","Tall and short"),("2. Shape of seed","Round and wrinkled"):} Answer the following questions : Which traits are dominant ?

Question : When organisms die, their bodies will decompose and be lost. Then how do we get fossils? Give an example.

Question : When muscles get fatigued there is

Question : When man eats fish, which feeds on, zoo- planktons, which have eaten small plants. The producer in the chain is

Question : Whenis worldMenstrualHygieneDayobserved ?

Question : When is it said that two species have a common ancestor ?

Question : When heart contracts to pump blood, the flow has to be unidirectional. This is ensured by

Question : Whenguardcellslosewaterthe stomaopens

Question : When green plants are eaten by primary consumer :

Question : When germ cells from two parents combine during sexual reproduction, it results in ___________ of chromosome number.

Question : When greentomatoes turn into red then ,

Question : When frog uses grasshopper as food, then energy flow occurs from ...a.producer to decomposerb.producer to primary consumer.c.primary consumer to secondary consumer.d.primary carnivores to higher carnivores

Question : When flagella are distributed all around a bacterial cell , the arrangement is called ?

Question : When few drops of iodine were poured on a potato slice, the potato turned blue-black in colour. This indicates thatpotato contains

Question : When does the maximum synthesis of ethylene occur?

Question : When does the newly formed DNA copies separate ?

Question : When does duplication of DNA take place ?

Question : When did the placenta is formed in the period of pregnency ?

Question : When diaphragm of man is completely dome shaped it shows