4951 + Interview Questions in Biology in Class 10 Page 37 InterviewSolution

1801.	Question : Study the picture below 'variation under domestication of wild cabbage plant and describe.
Answer» Solution :Artificial selection is the PROCESS man selects a particular trait for breeding in ANIMALS and plants with improved characters. Early farmers CULTIVATED wild cabbage. This wild cabbage DEVELOPED many vaieties such as broccoli, kale, cabbage, cauliflower, knol-khlo. Brussel. sprouts. Theses varieties were artificially SELECTED because of their characteristicst traits.

Discussion

1802.	Question : Study the graph and answer the following questions: Graph showing effects of vigorous exercise on the concentration of lactic acid in blood . What is the relationship between lactic acid and muscle pain ?
Answer» SOLUTION :If CONCENTRATION of lactic acid INCREASES, MUSCLE pains ALSO increases.

Discussion

1803.	Question : Study the given diagram: Name the parts ‘A’ and ‘B’ and state one function of each.
Answer» Solution :A `rarr` Stomatai pore Function: Massive AMOUNTS of gaseous exchange takes place in the leaves through these pores for the PURPOSE of photosynthesis. B `rarr` Guard CELL Function: The OPENING and closing of the stomatai pore is a function of the guard cell.

Discussion

1804.	Question : Study the diagrams A and B. Answer the questions that follow :(a)Identify the type of nutrition given in the figures A and B.(b)What mode of nutrition is shown in Fig. A ? Give another similar example from animal kingdom.(c)What mode of nutrition is shown in Fig. B ? State a reason why a deer will have a larger small intestine than the tiger.(d)From the above figures, find out an exception . Why is it so ?
Answer» Solution :(a)The GIVEN figures depict heterotrophicmode of NUTRITION. (b)Fig. A show PARASITIC mode of nutrition. From animal world, leech, tapeworm, roundworm, ticks etc., are someof the organisms exhibiting this mode. (c)Fig. B SHOWS holozoic mode of nutrition. Tiger being a carniore, feeds upon animal fleshwhich is mainly proteinsand easier to digest, compared to whichbeingherbivores feeds upon plant material. PLANTS material being cellulose is difficultto digest. Hence, tiger has smaller small intestine compared with that of a deer. (d)Cuscuta is an exception. This is because,even though it is an angiosperm, it is non-photosynthetic and parasitic.

Discussion

1805.	Question : Study of homologous organs suggests that
Answer» EVOLUTION has STOPPED evolution is very rapid there is some kind of attempt to EXPLOIT different habitats evolution has not taken any advantage of the habitats Answer :C

Discussion

1806.	Question : Study of fungi is known as
Answer» Phycology Mycology Palynology Dendrology ANSWER :B

Discussion

1807.	Question : Study of fossils is known as
Answer» PALAEOBOTANY PALAEONTOLOGY anatomy ornithology Answer :B

Discussion

1808.	Question : Study of fossils comes under :
Answer» ORGANIC EVOLUTION Palaeogeography Palaeontology Herpetolohy Answer :C

Discussion

1809.	Question : Study of cause of disease is called etiology
Answer» Solution :Correct Statement: STUDY of cause of DISEASE is CALLED Pathology.

Discussion

1810.	Question : Study of algae is called
Answer» phycology mycology dendrology physiology ANSWER :A

Discussion

1811.	Question : Study following statements (P to R) and choose the correct alternative : P: Those organs which have the same internal structure but different functions are called homologous organs. Q: Organs which have different basic design but have similar appearance and carry out similar functions are called analogous organs. R: The impressions of dead plants or animals that lived in the past are known as fossils.a.Only R is true.b.All the three statements are true.c.Statements P and Q are true, but R is false.d.All the three statements are false.
Answer» <P>Only R is TRUE. All the three STATEMENTS are true. Statements P and Q are true, but R is false. All the three statements are false. Answer :A::B::C::D

Discussion

1812.	Question : Students dissected a human kidney longitudinally and drew the given diagram. Choosethe correct labelling :{:(,""X,""Y,""Z),(A,"Cortex","Medulla","Ureter"),(B,"Renal Pyramid","Bowman's Capsule","Renal Artery"),(C,"Medulla","Cortex","Ureter"),(D,"Bowman's Capsule","Cortex","Renal Artery"):}
Answer» A B C D Answer :C

Discussion

1813.	Question : struggle for existence is always active.
Answer» ANSWER :T

Discussion

1814.	Question : Structuresin rootsthat help to absorbwaterare_______.
Answer» SOLUTION :ROOT HAIRS

Discussion

1815.	Question : Strongest muscle in the body is present in
Answer» arm jaw thigh neck Answer :C

Discussion

1816.	Question : Striped muscle fibre has
Answer» MANY nuclei two nuclei no nuclie one nucleus Answer :A

Discussion

1817.	Question : Striated muscles are found in
Answer» gallbladder wall of bladder leg muscles lungs Answer :C

Discussion

1818.	Question : Strength and rigidly of cell wall is due to
Answer» SUBERIN lignin cellulose pectin SOLUTION :N/A

Discussion

1819.	Question : Storage sprouting of potato can be prevented by
Answer» malic HYDRAZIDE cytokinins gibberellins IAA Answer :A

Discussion

1820.	Question : Stongest cartilage is
Answer» HYALINE cartilage fibrous cartilage elastic cartilage none of the above Answer :B

Discussion

1821.	Question : Stomata will open, if there is an accumulation of the following element in the guard cells
Answer» MAGNESIUM zinc potassium IRON ANSWER :C

Discussion

1822.	Question : Stomata: Transpiration :: Hydathode:
Answer» Guttation Oozing Bleeding Root Pressure Answer :A

Discussion

1823.	Question : Stomata of desert plants remain closed during daytime. How do they take up CO_(2) and perform photosynthesis ?
Answer» SOLUTION :Desert PLANTS take up `CO_(2)`at night and prepare an intermediatemolecule. Thisintermediate molecule is acted upon by the energyabsorbed by thechlorophyll during the day.

Discussion

1824.	Question : Stings of honey bee and scorpion are examples of:
Answer» HOMOLOGOUS ORGANS ANALOGUS organs vestigial organs DIVERGENT evolution Answer :B

Discussion

1825.	Question :Stem cuttings are commonly used for propagation in
Answer» rubber mangoes sugarcane jasmine Answer :C

Discussion

1826.	Question :Stem cells, which are undifferentiated or unspecialised mass of cells can be used for the treatment is called as......
Answer» SOLUTION :STEM CELL THERAPY

Discussion

1827.	Question : Statement X: Ocean thermal energy conversion plant can operate the temperature difference is 20^(@)C or more between the water at surface and water at depth. Statement Y : Wind energy farm can generate electricity only if the wind speed should be higher than 15 km//h. Which is correct option for statement X and Y ?
Answer» X is CORRECT, Y is INCORRECT. Both X and Y are correct. X is incorrect, Y is correct. Both X and Y are incorrect. Answer :A::B::C::D

Discussion

1828.	Question : Statement X: Reduction in number of prey altimately results in reduction of the number of predator. Statement Y : Ozone layer absorbs harmful ultraviolet radiations. Which option is correct for statements X and Y ?a.X and Y both correct.b.X and Y both incorrectc.X correct and Y incorrect.d.X incorrect and Y correct.
Answer» X and Y both CORRECT. X and Y both INCORRECT X correct and Y incorrect. X incorrect and Y correct. Solution :X and Y both correct.

Discussion

1829.	Question : Statement X:Decomposers satisfy their energy requirement directly from producers. Statement Y : The amount of available energy in an ecosystem depends on the rate of photosynthesis carried out by the producers. Which option is correct for statements X and Y?a. X and Y both correctb.X and Y both incorrect.c.X correct and Y incorrect.d.X incorrect and Y correct.
Answer» X and Y both CORRECT X and Y both INCORRECT. X correct and Y incorrect. X incorrect and Y correct. Solution :X incorrect and Y correct.

Discussion

1830.	Question : Statement A: We need to look for more and more source of energy. Reason R:There are only limited reserves of fossil fuels. Which option is correct for statement A and reason R?
Answer» Both A and R CORRECT, R is EXPLANATION of A. Both A and R correct, R is not explanation of A. A is correct, R is INCORRECT. A is incorrect, R is correct. Answer :A::B::C::D

Discussion

1831.	Question : Statement A: Water harvesting is an age-old concept in India. Reason R: It is useful to recharge the ground water but not to hold surface water. Which is correct option for statement A and reason R?
Answer» Both A and R are CORRECT and R is correct EXPLANATION of A. Both A and R are correct but R is not the correct explanation of A. A is correct and R is INCORRECT. A is incorrect and R is correct. Solution :A is correct and R is incorrect.

Discussion

1832.	Question : Statement A: The fore-brain is the main thinking part of the brain. Reason R: Thinking is a complex activity that involves a complicated interaction of many nerve impulses. Which option is correct for Statement A and Reason R?
Answer» Both A and R are correct and R is explanation of A. Both A and R are correct, but R is not explanation of A. A is correct, R is INCORRECT. A is incorrect, R is correct. Answer :A::B::C::D

Discussion

1833.	Question : Statement A: Prenatal sex determination has been prohibited by law. Reason R: Illegal sex-selective abortion of female foetuses increased. Which is the correct option for A and R?a.Both A and R correct, R is correct explanation of A.b.Both A and R correct, but R is not explanation of A.c.A is correct, R is incorrect.d.A is incorrect, R is correct.
Answer» Both A and R correct, R is correct EXPLANATION of A. Both A and R correct, but R is not explanation of A. A is correct, R is incorrect. A is incorrect, R is correct. Answer :A::B::C::D

Discussion

1834.	Question : Statement A: Many of the sources ultimately derive energy from the sun. Reason R: Nuclear fusion reactions are the source of energy in the sun. Which option is correct for statement A and reason R?
Answer» Both A and R CORRECT, R is EXPLANATION of A. Both A and R correct, R is not explanation A is correct, R is incorrect. A is incorrect, R is correct. Answer :A::B::C::D

Discussion

1835.	Question : Statement A: Huge areas of forest are cleared for the plantation of pine, teak or eucalyptus. Reason R : Monoculture plantation are useful for industries to access specific products and are an important source of revenue for the Forest Department. Which is correct option for statement A and reason R?
Answer» Both A and R are CORRECT and R is correct EXPLANATION of A. Both A and R are correct but R is not the correct explanation of A. A is correct and R is INCORRECT. A is incorrect and R is correct. SOLUTION :Both A and R are correct and R is correct explanation of A.

Discussion

1836.	Question : Statement A: Fossils are considered as ancient documents. Reason R: Genetic footprints of Homo sapiens can be traced with the help of fossils. Which is correct option for Statement A and Reason R?
Answer» Both A and R correct. R is EXPLANATION of A. Both A and R correct but R is not explanation of A. A is correct, R is INCORRECT. A is incorrect, R is correct. Answer :A::B::C::D

Discussion

1837.	Question : Statement A: Auxin helps the cells to grow longer and plant appears to bend towards light. Reason R: Auxin diffuses towards shady side of shoot from its tip. Which option is correct for Statement A and Reason R?
Answer» Both A and R are correct and R is EXPLANATION of A. Both A and R are correct, but R is not explanation of A. A is correct, R is incorrect. A is incorrect, R is correct. Answer :A::B::C::D

Discussion

1838.	Question : Statement A: Adrenaline diverts the blood to skeletal muscles of squirrel. Reason R: Squirrel relies not only on electrical chemical impulses but also on signals. Which option is correct for Statement A and Reason R?
Answer» A) Both A and R are correct and R is EXPLANATION of A. B) Both A and R are correct, but R is not explanation of A. C) A is correct, R is incorrect. D) A is incorrect, R is correct. Answer :A::B::C::D

Discussion

1839.	Question : State two sources from which plants obtain nitrogen for the synthesis of proteins and other compounds.
Answer» Solution :Two sources of nitrogen : (i) From SOIL - From ROOTS of certain plants. (ii) By INDUSTRIAL fixation or during lightning

Discussion

1840.	Question : State two properties of carbon which lead to a very large number of carbon compounds. (b) Why does micelle formation take place when soap is added to water ? Why are micelles not formed when soap is added to ethanol ?
Answer» Solution :(a) (i) Catenation (ii) TETRA valency . (b) It is because large number of molecular ions of soaps get AGGREGATED and form colloidal solution. Soap has hydrophobic tail (hydrocarbon ) which dissolves in hydrocarbon PART and hydrophilic part dissolves in water. Ethanol is non-polar solvent therefore micelles are not formed because hydrocarbon part gets ATTRACTED towards ethanol ionic end will . not dissolve in alcohol.

Discussion

1841.	Question : State two reason for the following facts (i) Sulphur is a non metal (ii) megnesium is a metal
Answer» Solution :(i) a) poor CONDUCTOR of heat and electricity b) `S + O_2 to SO_2 `SO_2 + H_2O to H_2SO_3` Sulphurdioxide is acidic oxide . ii) a) Good conductor of heat and electric b) `2Mg + O_2 to 2Mg O` `MgO + H_2O to Mg(OH)_2` MAGNESIUM oxide in NATURE .

Discussion

1842.	Question : State two reasons for launching the Ganga Action Plan.
Answer» Solution :GANGA Action Plan was LAUNCHED to improve the QUALITY of WATER and remove the disease causing coliform bacteria present in the water of Ganga.

Discussion

1843.	Question : State two problems caused by the non-biodegradable waste that we generate in our daily life ?
Answer» SOLUTION :Two PROBLEMS caused by non-biodegradable waste that we generate in our daily life are : it clogs drains. It causes water and soil pollution.

Discussion

1844.	Question : State two objectives of sustainable development.
Answer» Solution :Objectives of sustainable development: (1) To provide the economic well being. (2) To MAINTAIN HEALTHY environment for FUTURE generations.

Discussion

1845.	Question : State two methods to get rid of non-biodegradable wastes.
Answer» Solution :We should carry cloth bags when we GO for shopping. Non-biodegradable waste should be COLLECTED SEPARATELY and sent for recycling.

Discussion

1846.	Question : State two disadvantags of monoculture.
Answer» Solution :Disadvantages of monoculture : (1) Large amount of biodiversity is destroyed in the AREA. (2) The varied NEEDS of LOCAL people can no longer be met from such monoculture.

Discussion

1847.	Question : State two differences between autotrophic nutrition and heterotrophic nutrition.
Answer» SOLUTION :

Discussion

1848.	Question : State two advantages of wind energy.
Answer» Solution :ADVANTAGES of WIND energy : (1) It is an environment-friendly energy, (2) It is efficient SOURCE of RENEWABLE energy.

Discussion

1849.	Question : State three sommon features of respiratory organs of animals.
Answer» Solution :(i) All respiratory ORGANS have large surface area to GET enough oxygen. (ii) They are thin - walled for easy DIFFUSION of gases and substances. (iii) They have rich supply of blood for TRANSPORTING respiratory gases.

Discussion

1850.	Question : State the units of Solar constant Electricity. Energy.
Answer» SOLUTION :SOLAR CONSTANT - `kW//m^(2)` Electricity - MW Energy - eV or JOULES

Discussion

Explore topic-wise InterviewSolutions in .

Question : Study the picture below 'variation under domestication of wild cabbage plant and describe.

Question : Study the graph and answer the following questions: Graph showing effects of vigorous exercise on the concentration of lactic acid in blood . What is the relationship between lactic acid and muscle pain ?

Question : Study the given diagram: Name the parts ‘A’ and ‘B’ and state one function of each.

Question : Study of homologous organs suggests that

Question : Study of fungi is known as

Question : Study of fossils is known as

Question : Study of fossils comes under :

Question : Study of cause of disease is called etiology

Question : Study of algae is called

Question : struggle for existence is always active.

Question : Structuresin rootsthat help to absorbwaterare_______.

Question : Strongest muscle in the body is present in

Question : Striped muscle fibre has

Question : Striated muscles are found in

Question : Strength and rigidly of cell wall is due to

Question : Storage sprouting of potato can be prevented by

Question : Stongest cartilage is

Question : Stomata will open, if there is an accumulation of the following element in the guard cells

Question : Stomata: Transpiration :: Hydathode:

Question : Stomata of desert plants remain closed during daytime. How do they take up CO_(2) and perform photosynthesis ?

Question : Stings of honey bee and scorpion are examples of:

Question :Stem cuttings are commonly used for propagation in

Question :Stem cells, which are undifferentiated or unspecialised mass of cells can be used for the treatment is called as......

Question : Statement A: We need to look for more and more source of energy. Reason R:There are only limited reserves of fossil fuels. Which option is correct for statement A and reason R?

Question : Statement A: Water harvesting is an age-old concept in India. Reason R: It is useful to recharge the ground water but not to hold surface water. Which is correct option for statement A and reason R?

Question : Statement A: The fore-brain is the main thinking part of the brain. Reason R: Thinking is a complex activity that involves a complicated interaction of many nerve impulses. Which option is correct for Statement A and Reason R?

Question : Statement A: Many of the sources ultimately derive energy from the sun. Reason R: Nuclear fusion reactions are the source of energy in the sun. Which option is correct for statement A and reason R?

Question : Statement A: Fossils are considered as ancient documents. Reason R: Genetic footprints of Homo sapiens can be traced with the help of fossils. Which is correct option for Statement A and Reason R?

Question : Statement A: Auxin helps the cells to grow longer and plant appears to bend towards light. Reason R: Auxin diffuses towards shady side of shoot from its tip. Which option is correct for Statement A and Reason R?

Question : Statement A: Adrenaline diverts the blood to skeletal muscles of squirrel. Reason R: Squirrel relies not only on electrical chemical impulses but also on signals. Which option is correct for Statement A and Reason R?

Question : State two sources from which plants obtain nitrogen for the synthesis of proteins and other compounds.

Question : State two properties of carbon which lead to a very large number of carbon compounds. (b) Why does micelle formation take place when soap is added to water ? Why are micelles not formed when soap is added to ethanol ?

Question : State two reason for the following facts (i) Sulphur is a non metal (ii) megnesium is a metal

Question : State two reasons for launching the Ganga Action Plan.

Question : State two problems caused by the non-biodegradable waste that we generate in our daily life ?

Question : State two objectives of sustainable development.

Question : State two methods to get rid of non-biodegradable wastes.

Question : State two disadvantags of monoculture.

Question : State two differences between autotrophic nutrition and heterotrophic nutrition.

Question : State two advantages of wind energy.

Question : State three sommon features of respiratory organs of animals.

Question : State the units of Solar constant Electricity. Energy.